JP7618355B2 - How to erect an air beam structure - Google Patents

Description

The present invention relates to air beam structures, and in particular to the construction techniques thereof.

Air beam structures are known.
An air beam structure is a membrane structure having at least one, and in many cases multiple, bags made of a membrane material that are airtight and can be strengthened by filling the inside of the bag with air. In this application, the term "beam" does not only mean a beam or girder that is normally meant by the term "beam," but also includes a column that extends in other directions, such as vertically, and also includes a curved shape such as an arch (a shape in which two or more straight lines are continuously connected, or a curved shape, such as a circular arc).
In this application, only the part of the final structure that corresponds to the aggregate in a general structure for giving the structure strength is defined as an air beam structure. Such air beam structures are generally used to build tents that use the air beam structure as an aggregate. For example, a tent is built by covering the entire air beam structure with a membrane material.

Air beam structures, or tents that use them, use membrane material to form them, which allows for beautiful curves to be achieved. In addition, they have the advantage that they can be set up and taken down relatively easily and in a short amount of time compared to normal structures. For example, they are used in arches used in school festivals and pavilions at world expos.
Moreover, it has been proposed to use tents that utilize air beam structures as temporary tents in emergencies such as natural disasters, which have become more frequent in recent years.

Among air beam structures, there are those that have at least two arch-shaped main beams arranged in parallel and sub-beams connecting adjacent main beams. Such air beam structures can be used to make tents in a roughly kamaboko (spiral-shaped) shape, and their simple shape has a wide range of applications.
As will be the case below, the term "approximately kamaboko-shaped" in this application also includes cases where the cross section of the air beam structure parallel to the inner plane of the arch made by the main beam included in the air beam structure is not the same size or shape at any part in the longitudinal direction of the air beam structure (direction perpendicular to the plane made by the arch of the main beam). For example, even if the arch of the main beam at one end in the longitudinal direction of the air beam structure is small and the arch of the main beam at the other end is gradually larger (approximately shell-shaped like a bivalve shell), or even if the arches of the main beams at one end and the other end in the longitudinal direction of the air beam structure are small and the arch of the main beam at the center in the longitudinal direction is large (approximately dome-shaped), this does not prevent the air beam structure from being "approximately kamaboko-shaped".

However, there is still room for improvement in the air beam structure used to make the generally semi-cylindrical tent.
As described above, an air beam structure has a bag or an air chamber defined by the bag, and the bag is filled with air to maintain its shape. In other words, when constructing an air beam structure, the membrane material that constitutes the air beam structure is laid on the ground, and the air chamber defined by the bag included in the beam of the air beam structure is filled with air to deform the beam into a predetermined shape to form an air beam structure. However, there are cases where constructing an air beam structure is not easy.
Some air beam structures used for the above-mentioned purposes are relatively large in scale. For example, at least one of the width (the distance between the two bottom ends of one main beam) and the depth (the distance between the two ends of the main beams) may exceed 15 m, and the height may exceed 7 m.
In such a large air beam structure, even if the material that constitutes it is a membrane material that is relatively light as a building material, the weight will exceed 100 kg, and in some cases may approach or exceed 200 kg.
When constructing such an air beam structure, if the air beam structure includes only one bag, and the air beam structure is to be formed by filling the bag with air, the tall air beam structure must be raised up in one go, and the air beam structure may lose stability during the filling process and may even fall over. If such a situation occurs, the air beam structure may be damaged, and above all, it may be difficult to ensure the safety of workers.

The main object of the present invention is to provide a technique for easily and safely setting up an air beam structure used to create a roughly semi-cylindrical tent.
Furthermore, even if the air beam structure is not approximately kayak-shaped, if the air beam structure is tall, there is a problem that it is difficult to maintain the stability of the air beam structure when it is set up. Therefore, it is also an object of the present invention to provide technology that enables easy and safe set-up of air beam structures that are not necessarily approximately kayak-shaped.

In order to solve these problems, the present inventors propose the following invention.
The method for erecting an air beam structure according to the present invention is a method for erecting an air beam structure as follows.
The air beam structure comprises a main air chamber which is an air chamber that can be filled with air, which is divided into an upper main air chamber which is an upper air chamber, and two lower main air chambers which are air chambers located below both sides of the upper main air chamber, and which are arranged parallel to each other in a plan view and which have a predetermined shape maintained by filling the main air chamber with air, at least two main beams which are beams made of a membrane material and which become arched when the main air chamber is filled with air, and which have sub-air chambers which are air chambers that can be filled with air, and which have a predetermined shape maintained by filling the sub-air chambers with air, and which are beams made of a membrane material and which connect adjacent main beams.

In other words, the air beam structure set up by the present invention is an air beam structure used to make a tent having a roughly semi-cylindrical shape. By covering or stretching a membrane material over the air beam structure, a roughly semi-cylindrical tent can be obtained.
This air beam structure has a main beam made of a membrane material. The main beam is filled with air and has a main air chamber that maintains the shape of the main beam. When the main air chamber is filled with air, it becomes arch-shaped (a shape formed by continuously connecting two or more straight lines, or a curved shape, such as a circular arc).
There are at least two main beams. When there are two main beams, the main beams are arranged at both ends of the air beam structure in the longitudinal direction so as to be parallel in a plan view. When there are three or more main beams, the main beams are arranged at both ends of the air beam structure in the longitudinal direction and at an appropriate position between them so as to be parallel in a plan view. The at least two main beams generally have the same shape and size, but some difference in size and shape is acceptable.
The main air chamber forming the main beam is partitioned by a membrane material. The main air chamber may or may not be exposed to the outside of the main beam. When the main air chamber is exposed to the outside, the main beam is made of a single membrane material, and when the main air chamber is not exposed to the outside, the main beam is made of, for example, a double membrane material. When the main beam is made of a double membrane material, the inner membrane material and the outer membrane material can be made different and each can be given a different function. For example, the inner membrane material can be given airtightness to form the main air chamber, and the outer membrane material can be given physical strength against, for example, abrasion and tearing to protect the inner membrane material. Furthermore, when the main beam is constructed of double membrane materials, for example, the bag formed by the inner membrane material has a linear shape when it is used alone and the main air chamber partitioned by the inner membrane material is filled with gas, but the tubular bag formed by the outer membrane material may be made curved (or polygonal), so that when the main air chamber formed by the inner membrane material is filled with gas, it is forcibly bent into an arch shape by the outer membrane material.
The main air chamber in the main beam is divided into an upper main air chamber, which is an upper air chamber, and two lower main air chambers, which are air chambers located below the upper main air chamber on both sides. The upper main air chamber and the lower main air chamber may be formed as independent bags made of independent membrane materials, or the upper main air chamber and the lower main air chamber may be divided by dividing the middle part of a long continuous bag with a single membrane material. The lower end of the upper main air chamber or the upper end of the lower main air chamber should be at a height that the worker can reach by stretching out his or her hand. Although not limited to this, the height is, for example, about 180 cm to 200 cm.
The air beam structure erected by the erection method of the present invention has a sub-beam made of a membrane material. The sub-beam is filled with air and has a sub-air chamber that maintains the shape of the sub-beam, and when the sub-air chamber is filled with air, it assumes a linear shape.
There are a plurality of sub-beams. Both ends of the sub-beam are connected to the adjacent main beam. Although not limited to this, the sub-beam is typically horizontal in the constructed air beam structure. However, the sub-beam does not need to be horizontal. For example, when the sizes of adjacent main beams 100 are different, the position of one end of the sub-beam connecting those main beams is often higher than the position of the other end. The length of each sub-beam may be the same, or it does not have to be. However, since at least two main beams are parallel, and naturally two adjacent main beams are parallel, when the sub-beam connecting adjacent main beams is horizontal and adjacent main beams are connected at the shortest distance, the length of the sub-beam connecting adjacent same main beams will be the same. The sub-air chamber may be connected to the main air chamber of the main beam to which the sub-beam it is included is connected, or it does not have to be.
The air chambers that form the sub-beams are partitioned by membrane materials. The sub-air chambers may or may not be exposed to the outside of the sub-beam. When the sub-air chambers are exposed to the outside, the sub-beams are made of a single membrane material, and when the sub-air chambers are not exposed to the outside, the sub-beams are made of, for example, double membrane materials. When the membrane material is double, the structure, function, and effect of each membrane material are as described for the main beam.

The setup method of the present invention includes a first step of simultaneously filling the upper main air chambers of at least two of the main beams with air to form a predetermined shape in a portion of the main beam corresponding to the upper main air chamber of each of the at least two main beams; a second step of filling one of the lower main air chambers of each of the at least two main beams with air, which is located on the same side of the at least two main beams, to form a predetermined shape in a portion of the main beam corresponding to the lower main air chamber of one of the lower main air chambers of each of the at least two main beams; and a third step of filling the other lower main air chamber of each of the at least two main beams with air to form a predetermined shape in a portion of the main beam corresponding to the other lower main air chamber of each of the at least two main beams.
This setup method includes first to third steps which are performed in that order.
In the first step, the upper main air chambers of at least two main beams are simultaneously filled with air, so that the portions of the main beams corresponding to the upper main air chambers are formed into a predetermined shape.
Next, in the second step, the lower main air chambers of one of the at least two main beams are filled with air at the same time, so that the shape of the part of each main beam corresponding to the lower main air chamber of the one of the at least two main beams is made into a predetermined shape. Here, the lower main air chamber of one of the at least two main beams means the lower main air chamber located on the same side in the left-right direction when each main beam is viewed from the front.
Then, in a third step, the lower main air chamber of the other of at least two main beams is filled with air at the same time, so that the shape of the portion of each main beam corresponding to the other lower main air chamber is made into a predetermined shape.
That is, in this method of setting up, first, the part corresponding to the upper main air chamber, which occupies only a part of the height of the main beam, rises up to the planned shape. Next, the part corresponding to the lower main air chamber on one side of the main beam rises up to the planned shape (in this state, the main beam viewed from the front is in a tilted state, so to speak), and finally, the part corresponding to the lower main air chamber on the other side of the main beam rises up to the planned shape. In this way, by dividing the main beam into three parts and raising them, the height of the part of the air beam structure that can be raised at one time can be set to a part of the total height of the air beam structure, so that the air beam structure that is being filled with air can be prevented from losing its balance and thus falling over. In other words, according to the present invention, the air beam structure can be set up safely.
In the first step, air is simultaneously filled into the upper main air chambers of each main beam. This is because, for example, if air is filled only into the upper main air chamber of one main beam, it is difficult to make the main beam stand on its own. When simultaneously filling the upper main air chambers of each main beam with air, if the upper main air chambers of each main beam are connected to each other via, for example, the sub-air chamber of the sub-beam, it is possible to fill air from any of the upper main air chambers using one blower. However, even if the upper main air chambers of each main beam are connected to each other via, for example, the sub-air chamber of the sub-beam, it is possible to fill air into one of the connected spaces using multiple blowers. On the other hand, if the upper main air chambers of each main beam are independent and not connected to each other, it is possible to simultaneously fill air into each of the upper main air chambers of each upper main beam using multiple blowers connected to each of the upper main air chambers of each main beam. These circumstances are the same when filling one lower main air chamber with air in the second step and when filling the other lower main air chamber with air in the third step.
If the sub-air chambers in each sub-beam are not connected to the main air chamber of the main beam, each sub-air chamber should be filled with air before filling the main air chamber of the main beam with air. For example, before filling the upper main air chamber with air, the sub-air chambers of the sub-beams connecting the parts of the main beam corresponding to the upper main air chambers should be filled with air. In this way, when the upper main air chamber of the main beam is filled with air, the parts corresponding to the upper main air chambers of the main beam are connected by the sub-beams, so that at least the parts corresponding to the upper main air chambers of the two main beams can stand on their own. The same applies to the parts corresponding to the lower main air chamber of one of the main beams and the parts corresponding to the lower main air chamber of the other main beam.

In the method of erecting an air beam structure in the present invention, after completing the third step, all of the upper main air chambers, all of the lower main air chambers and all of the sub-air chambers are connected to each other, and air is sent to all of the connected upper main air chambers, all of the lower main air chambers and all of the sub-air chambers (in other words, all of the main air chambers and all of the sub-air chambers) by a blower as necessary, thereby maintaining the shapes of the main beams and sub-beams.
The air beam structure to be set up in the present invention is relatively large, and it may be difficult to maintain complete airtightness in either the main air chamber (upper main air chamber, lower main air chamber) or the sub air chamber. For example, it is possible that the main air chamber or the sub air chamber may be damaged or other problems may occur in the air beam structure after it is set up due to some circumstances. By connecting all the main air chambers and the sub air chambers and sending air to the connected space with a blower, it is possible to maintain the shape of the main beam and the sub beam even if there is an airtight part somewhere in the main air chamber and the sub air chamber. In this case, one blower may be used to send air to all the connected upper main air chambers, all the connected lower main air chambers, and all the connected sub air chambers. In this way, only one blower is required to blow air into one space created by connecting all the main air chambers and the sub air chambers, which is economical.

In the air beam structure in the air beam structure erection method according to the present application, at least one sub-beam connecting at least two adjacent main beams is provided, the sub-beams connecting the portions of the at least two adjacent main beams that correspond to the upper main air chamber of the adjacent main beams, the sub-beams connecting the portions of the at least two adjacent main beams that correspond to the lower main air chamber of one of the adjacent main beams, and the upper main air chambers of the adjacent main beams are communicated with each other via a sub-air chamber provided in the sub-beam connecting the portions of the at least two adjacent main beams that correspond to the upper main air chambers, the lower main air chambers of one of the adjacent main beams are communicated with each other via a sub-air chamber provided in the sub-beam connecting the portions of the at least two adjacent main beams that correspond to the lower main air chambers, and the lower main air chambers of the other of the adjacent main beams are communicated with each other via a sub-air chamber provided in the sub-beam connecting the portions of the at least two adjacent main beams that correspond to the lower main air chambers of the other of the adjacent main beams.
When setting up such an air beam structure, in the first step, the upper main air chamber of each of the at least two main beams and the sub-air chamber connecting the upper main air chambers to each other are combined, in the second step, the lower main air chamber of one of the at least two main beams and the sub-air chamber connecting the lower main air chambers to each other are combined, and in the third step, the other lower main air chamber of each of the at least two main beams and the sub-air chamber connecting the other lower main air chambers to each other are combined, and air can be filled in using a blower.
As described above, in the air beam structure of the present invention, it is necessary to simultaneously fill the upper main air chambers of at least two main beams with air. In this case, if the upper main air chambers of at least two main beams are connected to each other by a sub-air chamber of the sub-beam that connects the parts corresponding to the upper main air chambers of the main beams, the upper main air chambers of at least two main beams and the sub-beams that connect them all become one connected space. Therefore, in the first process, the upper main air chambers can be combined into one connected space and filled with air using a blower. This makes it possible to make the air pressure in the multiple upper main air chambers that send air to all the connected upper main air chambers and all the sub-air chambers by one blower and the sub-air chambers that connect them uniform, so that the parts corresponding to the upper main air chambers of the air beam structure that is rising rise in a stable state. In this case, air may be sent to all the connected upper main air chambers and all the sub-air chambers by one blower. This is economical because only one fan is required to blow air into the single space created by connecting all of the main air chamber and sub-air chambers.
Similarly, in the second and third steps, air is filled into one of the plurality of lower main air chambers and the other of the plurality of lower main air chambers collectively or simultaneously using a blower, so that the air pressure of the plurality of lower main air chambers and the sub-air chambers connecting them can be made uniform, and the part of the air beam structure corresponding to the lower main air chamber rises in a stable state. In the second and third steps, air may be sent to all the connected lower main air chambers and all the sub-air chambers by one blower. It is economical if only one blower is required. Even when using an air beam structure having the above-mentioned configuration, after the third step is completed, all the upper main air chambers, all the lower main air chambers, and all the sub-air chambers are made to communicate with each other, and air is sent to all the connected upper main air chambers, all the lower main air chambers, and all the sub-air chambers by a blower as necessary, so that the air pressure in all the upper main air chambers, all the lower main air chambers, and all the sub-air chambers can be kept within a predetermined range, and the shapes of the main beam and the sub beam can be maintained.
In the case where all the upper main air chambers, all the lower main air chambers, and all the sub-air chambers are made to communicate with each other after the third step, a space formed by the upper main air chambers of at least two of the main beams and the sub-air chambers connecting the upper main air chambers to each other is made to communicate with a space formed by one of the lower main air chambers of at least two of the main beams and the sub-air chambers connecting the one of the lower main air chambers to each other, and a space formed by the upper main air chambers of at least two of the main beams and the sub-air chambers connecting the upper main air chambers to each other is made to communicate with a space formed by the other of the lower main air chambers of at least two of the main beams and the sub-air chambers connecting the other of the lower main air chambers to each other. In this case, the shapes of the main beam and the sub-beams may be maintained by sending air as necessary to the connected upper main air chambers, all the lower main air chambers, and all the sub-air chambers by a blower.
In this way, all of the main air chambers and all of the sub-air chambers can be connected by simply connecting two of the multiple air chambers, which saves the effort required for this. It is also possible to use only one blower to send air to the space connecting all of the main air chambers and all of the sub-air chambers. Minimizing the number of blowers is economically advantageous.
When all of the main air chambers and all of the sub-air chambers are connected by connecting two of a plurality of air chambers, in order to connect a space formed by the upper main air chambers of at least two of the main beams and the sub-air chamber connecting the upper main air chambers with each other and a space formed by one of the lower main air chambers of at least two of the main beams and the sub-air chamber connecting one of the lower main air chambers with each other, the upper main air chamber of one main beam and one of the sub-air chambers can be connected by a tube passing outside the main beam, and in order to connect a space formed by the upper main air chambers of at least two of the main beams and the sub-air chamber connecting the upper main air chambers with each other and a space formed by the other lower main air chambers of at least two of the main beams and the sub-air chamber connecting the other lower main air chambers with each other, the upper main air chamber of one main beam and the other sub-air chamber can be connected by a tube passing outside the main beam.
According to this, it is possible to communicate all the main air chambers and all the sub-air chambers by simply connecting the upper main air chamber of one main beam to the lower main air chamber of one of the two ends of a tube, and connecting the upper main air chamber of one main beam to the lower main air chamber of the other of the two ends of the other tube. This work is simple because the tube passes outside the main beam. In order to make this possible, it is necessary to provide openings for connecting the tubes at two locations in the upper main air chamber of the main beam, and at one location each in the lower main air chamber of one of the two lower main air chambers and the other of the two lower main air chambers. Conversely, it is possible to communicate all the main air chambers and all the sub-air chambers with just this ingenuity.

After the third step is completed, when air is blown from any of all the communicating main air chambers and all the communicating sub air chambers to all the communicating main air chambers and all the communicating sub air chambers in order to maintain the shapes of the main beam and the sub beams, the air pressure in all the communicating main air chambers and all the communicating sub air chambers can be kept within a predetermined range by using the blower. If the air pressure in all the communicating main air chambers and all the communicating sub air chambers is too low, the air beam structure cannot maintain the intended shape, whereas if the air pressure is too high, the air beam structure may be damaged, and even if a safety valve is provided to release the air when the air pressure becomes too high, the amount of air leaking from the air beam structure will be too large, making it uneconomical. If the air pressure in all the communicating main air chambers and all the communicating sub air chambers is kept within a predetermined range, such problems will not occur.
In order to keep the air pressures in all of the connected main air chambers and sub-air chambers within a predetermined range, a pressure sensor is used which measures the air pressures in all of the connected main air chambers and sub-air chambers over time, and the blower is driven when the air pressure measured by the pressure sensor is lower than a first air pressure which is a predetermined air pressure, and the blower is stopped when the air pressure measured by the pressure sensor reaches a second air pressure which is a predetermined air pressure higher than the first air pressure. In this way, the air pressures in all of the connected main air chambers and sub-air chambers are kept between the first air pressure and the second air pressure.

The upper main air chamber in at least two of the main beams may be divided into a plurality of sub-upper main air chambers of the same number located at corresponding positions when the main beam is viewed from the front. In this case, the first step may include a step A of simultaneously filling the uppermost sub-upper main air chambers located at corresponding positions in the upper main air chambers of each of the at least two main beams with air to make the shape of the parts of the main beam corresponding to the sub-upper main air chambers into a predetermined shape, and a step B of simultaneously filling the uppermost sub-upper main air chambers located below the sub-upper main air chamber filled with air in the step A in the upper main air chambers of each of the at least two main beams with air to make the shape of the parts of the main beam corresponding to the sub-upper main air chambers into the predetermined shape. In this case, the step B is repeatedly performed until all the sub-upper main air chambers are filled with air.
If the height of the part of the main beam that corresponds to the upper main air chamber is relatively high, there is a danger that the part that is raised by carrying out the above-mentioned first step may lose its balance or fall over. By carrying out the above-mentioned steps A and B in the first step of the present invention, it is possible to raise the part of the main beam that corresponds to the upper main air chamber in the order of the sub-upper main air chambers located in the part that corresponds to the upper main air chamber of each main beam. This makes it possible to prevent the above-mentioned danger from occurring.
When the upper main air chamber is divided into a plurality of sub-upper main air chambers, at least one sub-beam that connects the sub-upper main air chambers located at corresponding positions of the adjacent main beams is provided as a sub-beam that connects at least two adjacent main beams, and the sub-upper main air chambers located at corresponding positions of the adjacent main beams can be connected to each other via the sub-beam that connects them. In this case, in the A process and the B process, the sub-upper main air chambers located at corresponding positions of at least two main beams and the sub-air chamber that connects them are filled with air by a blower together. According to this, when the A process and the B process are performed, the overall air pressure in the sub-upper main air chambers and the sub-air chambers located at corresponding positions, which are the parts that rise at the same time among the plurality of upper main air chambers of the air beam structure, can be made uniform, so that the rise of each part of the range corresponding to the upper main air chamber of the air beam structure can be performed in a stable state. In this case, in the process A and the process B, one blower may send air to the auxiliary upper main air chambers located at corresponding positions in at least two of the main beams and the sub-air chambers communicating therewith. This has the effect of reducing the number of blowers required to fill the air.
After completing the third step, air may be sent to all of the auxiliary upper main air chambers, all of the lower main air chambers, and all of the sub-air chambers collectively as necessary by a blower to maintain the shape of the main beam and the sub-beams. By doing so, even if air leakage occurs in the air beam structure, the shape of the air beam structure can be maintained. In this case, air may be sent to all of the connected auxiliary upper main air chambers, all of the lower main air chambers, and all of the sub-air chambers by one blower. By doing so, the shape of the air beam structure can be maintained in the unlikely event of an accident with a minimum number of blowers.
When all the auxiliary upper main air chambers, all the lower main air chambers, and all the sub-air chambers are communicated when the third step is completed, the air pressures of all the communicated auxiliary upper main air chambers, all the lower main air chambers, and all the sub-air chambers may be kept within a predetermined range by using the blower. This avoids the above-mentioned problems caused by the air pressure in each air chamber becoming too high. In this case, a pressure sensor may be used to measure the air pressures in all the communicated auxiliary upper main air chambers, all the lower main air chambers, and all the sub-air chambers over time, and the blower may be driven when the air pressure measured by the pressure sensor is lower than a first air pressure, which is a predetermined air pressure, and the blower may be stopped when the air pressure measured by the pressure sensor reaches a second air pressure, which is a predetermined air pressure higher than the first air pressure. In this way, the air pressures in all the communicated auxiliary upper main air chambers and all the sub-air chambers are kept between the first air pressure and the second air pressure.

As an invention that can be applied to cases where the air beam structure is not limited to being approximately semi-cylindrical, the present inventors also propose the following method for erecting an air beam structure as one aspect of the present invention.
The method is a method for erecting an air beam structure having a beam made of a membrane material, the beam having an air chamber that can be filled with air, including an upper air chamber which is an upper air chamber, and multiple lower air chambers which are air chambers located below the upper air chamber, and which is designed to maintain a predetermined shape when the air chambers are filled with air, the method including a first step of filling the upper air chamber with air to make the shape of the part of the beam corresponding to the upper air chamber into the predetermined shape, and a second step of filling the multiple lower air chambers with air to make the shape of the part of the beam corresponding to the lower air chambers into the predetermined shape.
In this case, the air beam structure has a beam made of a membrane material, and the beam has an air chamber inside. The air chamber is airtight, just like the main air chamber and sub air chamber already mentioned. The air chamber is divided into an upper air chamber on the upper side and a lower air chamber on the lower side.
The method for erecting such an air beam structure includes a first step of filling the upper air chamber with air to form a predetermined shape in the part of the beam corresponding to the upper air chamber, and a second step of filling the lower air chambers with air to form a predetermined shape in the part of the beam corresponding to the lower air chamber. The upper air chamber is filled with air first, and then the lower air chamber is filled with air. When the upper air chamber is filled with air, only the area of the beam corresponding to the upper air chamber assumes the predetermined shape. Therefore, according to this erection method, when the upper air chamber is filled with air, the entire air beam structure does not rise, but only a part of it rises, so that the risk of the air beam structure falling over or the like can be suppressed when erecting the air beam structure. The same applies when filling the lower air chamber with air.
The upper air chamber may be divided into a plurality of sub-upper air chambers.
In this case, the first step may include a step A of filling the uppermost one of the auxiliary upper air chambers in the upper air chamber with air to make the shape of the portion of the beam corresponding to the auxiliary upper air chamber into a predetermined shape, and then a step B of filling the uppermost auxiliary main air chamber in the upper air chamber below the auxiliary upper air chamber filled with air in step A with air to make the shape of the portion of the beam corresponding to the auxiliary upper air chamber into the predetermined shape. In this case, the step B is repeatedly executed until all the auxiliary upper air chambers are filled with air.
As described above, in the first step, only the portion of the beam that corresponds to the upper air chamber rises. This can prevent the air beam structure from falling over during construction, but it is still possible that the portion of the beam that corresponds to the upper air chamber is excessively high. In that case, the upper air chamber can be divided vertically to be made up of multiple sub-upper air chambers. In this way, air is filled in the sub-upper air chambers in order from the top of the sub-upper air chambers, making it possible to prevent the air beam structure from falling over when constructing the portion of the beam that corresponds to the upper air chamber.
Even if the air beam structure is not approximately semi-cylindrical, the danger of the air beam structure collapsing after construction can be avoided by sending air to the air chambers in the air beam structure after construction using a blower, just like in the case of an air beam structure that is approximately semi-cylindrical. If the upper air chamber and the multiple lower air chambers are all connected to each other, only one blower will suffice, and if the upper air chamber is divided into multiple sub-upper air chambers, only one blower will suffice if the multiple sub-upper air chambers and the multiple lower air chambers are all connected to each other, just like in the case of an air beam structure that is not approximately semi-cylindrical.

FIG. 2 is a side view of the air beam structure after completion, which is set up in the first embodiment of the present application. FIG. 2 is a plan view of the air beam structure after completion, which is set up in the first embodiment of the present application. FIG. 2 is a front view of the completed air beam structure set up in the first embodiment of the present application. FIG. 2 is a cross-sectional view of a main beam of an air beam structure set up in the first embodiment of the present application. 1A is a side view and FIG. 1B is a front view of the air beam structure after completion, for explaining the configuration of the air chamber of the air beam structure set up in the first embodiment of the present application. FIG. FIG. 2 is a front view for explaining a method of setting up the tent according to the first embodiment of the present application. FIG. 11 is a front view for explaining a method performed after the third step of the tent pitching method of the first embodiment of the present application has been performed. 13A and 13B are a side view and a front view of the air beam structure after completion, for explaining the configuration of the air chamber of the air beam structure set up in the third embodiment of the present application; FIG. 13 is a front view illustrating a first step in the tent pitching method according to the third embodiment of the present application. 13A is a front view, (B) a side view, and (C) a plan view of an air beam structure after completion, which is set up in the fourth embodiment of the present application. FIG. 11 is a side view for explaining a method of erecting the air beam structure shown in FIG. 10 . FIG. 11 is a side view for explaining an example in which the upper air chamber is divided into a plurality of sub-upper air chambers in the air beam structure shown in FIG. 10 .

Below, first to fourth preferred embodiments of the present invention will be described with reference to the drawings. In the description of the first to fourth embodiments, common symbols will be used for common objects, and common descriptions will be omitted in some cases.

First Embodiment
The following describes how to erect an air beam structure that serves as the framework for a temporary tent. The term "temporary" means that it is not intended to be used for a permanent period, such as decades. Generally, a temporary tent is used for only a few years at most, and although this is not a limitation, in many cases, a temporary tent is used for only a few weeks to a few months, or at most a year.
In this embodiment, a method for erecting an air beam structure is described. Once erected, the air beam structure can be covered with other large membrane materials or the membrane materials can be stretched between aggregates to form a temporary tent.
A method for erecting the air beam structure according to the first embodiment will be described below.

First, a description will be given of the completed air beam structure X. Figures 1 to 3 are a side view, a plan view, and a front view of the completed air beam structure X, respectively.
The air beam structure X erected by the erection method of this embodiment serves as a framework for a temporary tent having a roughly semi-cylindrical shape.
The air beam structure X includes a main beam 100 having an arch-like shape when viewed from the front (for example, when viewed from the left in FIG. 1). There are at least two main beams 100, and three in this embodiment. The arch formed by the main beams 100 does not need to be curved (but is not limited to this, is circular in this embodiment) as in this embodiment, and may be formed by connecting two or more straight lines. The main beams 100 are in a parallel positional relationship when viewed in a plane, and are independent in a state in which adjacent sub-beams described later are connected to each other. At least two main beams 100 are required to enable the main beam 100 to stand on its own, but there may be three main beams 100 as in this embodiment, or more.
Although not limited thereto, the main beams 100 in this embodiment have the same size and shape, and except for the connection parts with the sub-beams, all of the configurations are the same. Although not limited thereto, the main beams 100 in this embodiment are positioned such that the two rearmost beams overlap the frontmost main beam 100 when viewed from the front.

A cross section of the main beam 100 is shown in Fig. 4. The cross section of the main beam 100 is basically as shown in Fig. 4, except for a portion where an upper main air chamber and a lower main air chamber are joined, the lower end of the lower main air chamber, and a portion where a connection port is present, which will be described later.
The main beam 100 has a substantially circular cross section when the air beam structure X is set up. The main beam 100 includes an outer membrane material 110 on the outside and an inner membrane material 120 on the inside of the outer membrane material 110. Both the outer membrane material 110 and the inner membrane material 120 are made of membrane material.
The inner membrane material 120 is a membrane material that divides the air chamber described later, more specifically, the upper main air chamber and the lower main air chamber described later. A membrane material that can form both the upper main air chamber and the lower main air chamber airtight is selected as the material of the inner membrane material 120. Although it is preferable that the airtightness required for the upper main air chamber and the lower main air chamber is perfect, it is also acceptable that they are practically airtight. In the present application, the upper main air chamber and the lower main air chamber may be airtight if the air beam structure X is airtight enough to maintain its shape by appropriately filling the air beam structure X with air as necessary as described later after construction. The inner membrane material 120 is, for example, a film made of resin or a membrane material in which a fibrous fabric or the like is covered with resin or the like. Resins that are materials for the film and membrane material include PU (polyurethane), PE (polyethylene), PVC (polyvinyl chloride), hypalon rubber, etc. The thickness of the inner membrane material 120 is 50 to 500 μm, and is generally selected from the range of 100 to 300 μm.
The outer membrane material 110 is a membrane material that has both the function of forming the inner membrane material 120 into a predetermined shape and the function of protecting the inner membrane material 120. The outer membrane material 110 is configured to have a shape as shown in Figs. 1 to 3. The main beam 100 made of the outer membrane material 110 is tubular, in this embodiment, cylindrical, following the known or well-known manufacturing method of the conventional similar products. The outer membrane material 110 is configured to have the above-mentioned shape after being cut using a three-dimensional cutting technique in order to form a three-dimensional shape. Note that the outer membrane material 110 is not required to be airtight. Therefore, both ends of the main beam 100 may be open. The outer membrane material 110 is, for example, a film made of resin or the like, or a membrane material in which a fibrous fabric or the like is coated with resin or the like. Resins that are materials for the film and membrane material include PU (polyurethane), PE (polyethylene), PVC (polyvinyl chloride), hypalon rubber, etc. The thickness of the outer membrane material 130 is 300 to 1000 μm, and is generally selected from the range of 500 to 700 μm.

The above-mentioned inner membrane material 120 in the main beam 100 is used to make an upper main bag and a lower main bag (both not shown).
The upper main bag is a cylindrical bag with both ends closed, with a length corresponding to the non-shaded portion of the main beam 100 shown in Fig. 5. Its diameter is slightly larger than the diameter of the cylinder formed by the outer membrane material 110, and its length is longer than that of the outer membrane material 110. The space inside the upper main bag is the upper main air chamber. The upper main bag is arranged in the main beam 100 with its length aligned with the non-shaded portion of Fig. 5 of the space formed by the cylindrical outer membrane material 110.
The lower main bag is a cylindrical bag with both ends closed, with a length corresponding to the shaded portion of the main beam 100 shown in Fig. 5. Its diameter is slightly larger than the diameter of the cylinder formed by the outer membrane material 110, and its length is longer than that of the outer membrane material 110. The space inside the lower main bag is the lower main air chamber. The lower main bags are present near both ends of the main beam 100. In other words, there are two lower main bags per main beam 100, and the lower main air chambers are the same. The lower main bags are arranged in the main beam 100 with their length aligned with the shaded portion in Fig. 5 of the space formed by the cylindrical outer membrane material 110.
Both the upper main bag and the lower main bag are formed into a cylindrical shape using the inner membrane material 120 according to a known or well-known manufacturing method of conventional products of the same type. When the upper main bag and the lower main bag are alone, the shape when air is filled into them may be curved along the shape of the main beam 100 shown in Figs. 1 to 3 and 5. However, although not limited to this, in this embodiment, when they are alone, the shape when air is filled into them is linear. As already mentioned, both the upper main bag and the lower main bag need to be airtight to a certain degree, and if their shapes are complicated, it is difficult to make the upper main bag and the lower main bag so as to have airtightness. In this embodiment, by adopting a simple cylindrical shape for both the upper main bag and the lower main bag, their manufacture is simplified, and the upper main bag and the lower main bag having a certain degree of airtightness can be manufactured as easily as possible. On the other hand, when air is filled into the upper main bag and the lower main bag, their shapes are forcibly deformed into an arch shape along the main beam 100 by the tube formed by the outer membrane material 110. The upper main bag and the lower main bag may have a larger diameter than the bag made of the outer membrane material 110, and when they are inflated by filling them with air as described below, their outer surfaces are pressed against the inner surface of the bag made of the outer membrane material 110 in a wrinkled state, for example. The same is true for the sub-beam 200.
In this way, the upper main bag and the lower main bag made of the inner membrane material 120 are assigned the function of forming the upper main air chamber and the lower main air chamber airtight, while the so-called sides of the cylindrical shape made of the outer membrane material 110 are assigned the functions of adjusting the shapes of the upper main bag and the lower main bag when air is put in and protecting the upper main bag and the lower main bag, which are different from those assigned to the upper main bag and the lower main bag. This is also the case with the sub beam 200.
In this embodiment, the upper main bag and the lower main bag are cylindrical bags independent of each other, but a series of cylindrical bags having a length corresponding to the length of the main beam 100 may be separated by a membrane material at the boundary between the non-shaded and shaded areas in Figure 5.

As described above, an upper main bag that defines an upper main air chamber is located inside a certain upper portion (non-shaded portion in FIG. 5 ) of each main beam 100 along the length of the main beam 100. This portion of the main beam 100 is referred to as the main beam upper portion 100U.
On the other hand, inside a certain lower portion (shaded portion in FIG. 5) of each main beam 100, a lower main bag that defines a lower main air chamber is located along the length of the main beam 100. This portion of the main beam 100 is referred to as a main beam lower portion 100D.
The height of the lower end of the upper main beam portion 100U is preferably set to a height that an operator can reach by stretching out his/her hand. Although not limited to this, the height is, for example, about 180 cm to 200 cm. This is to make it easier for an operator to communicate the upper main air chamber with the lower main air chamber, as described later.
A connection port 131 is provided near both lower ends of the main beam upper portion 100U of each main beam 100. The connection port 131 is an opening that can be opened and closed freely and communicates with the upper main air chamber in the upper main bag inside the main beam upper portion 100U. The connection port 131 is naturally exposed to the outside from the outer membrane material 110 in the portion corresponding to the main beam upper portion 100U. In other words, an opening corresponding to the connection port 131 exists in that portion of the outer membrane material 110.
A connection port 132 and a connection port 133 are provided near both upper ends of the lower main beam portion 100D of each main beam 100 and below the upper ends thereof. The connection ports 132 and 133 are freely openable and closable openings that communicate with the lower main air chamber in the lower main bag inside the lower main beam portion 100D. The connection ports 132 and 133 are also naturally exposed to the outside from the outer membrane material 110 in the portion corresponding to the lower main beam portion 100D.
Although not limited thereto, the connection ports 131, 132, and 133 in this embodiment are all the same and made of, for example, but not limited to, resin or metal. The connection ports 131, 132, and 133 are designed to be detachably connected to the ends of tubes described below in a generally airtight state. Components that can perform such connections are publicly known or well-known, so the connection ports 131, 132, and 133 may be constructed in accordance with the publicly known or well-known technology.

Next, the configuration of the sub-beam 200 will be described. The sub-beam 200 is for connecting adjacent main beams 100 to each other, and is approximately horizontal in the air beam structure X after erection, with the front-to-rear direction of the air beam structure X being its longitudinal direction. However, all the sub-beams 200 do not need to be approximately horizontal, and for example, when adjacent main beams 100 are different in size, some of the sub-beams 200 often have one end positioned higher than the other end. In the case of an air beam structure having a substantially shell-like or dome-like shape, at least some of the sub-beams 200 are almost always inclined rather than horizontal.
The sub-beam 200 is configured with a double structure of an outer membrane material and an inner membrane material (both not shown) like the main beam 100. The materials and roles of the outer membrane material and inner membrane material in the sub-beam 200 are the same as those in the main beam 100. The sub-beam 200 has a substantially circular cross section when the air beam structure X is set up, and the cross section is the same as the cross section of the main beam 100 shown in FIG.
As described above, the sub beams 200 connect adjacent main beams 100. In this embodiment, since there are three main beams 100, there are sub beams 200 that connect the front main beam 100 and the middle main beam 100, and those that connect the middle main beam 100 and the rear main beam 100. In this embodiment, although not limited to this, the front main beam 100 and the middle main beam 100 are connected by seven sub beams 200, and the middle main beam 100 and the rear main beam 100 are also connected by seven sub beams 200. However, the number of sub beams 200 that connect the front main beam 100 and the middle main beam 100 and the number of sub beams 200 that connect the middle main beam 100 and the rear main beam 100 are not limited to this, and may be different from each other. One end of the seven sub beams 200 is attached to the highest position of the main beam 100 at the center in the length direction. The ends of the other six sub-beams 200 are fixed at positions slightly lower than the highest point of the main beam 100 and even lower than that, and are symmetrical on the main beam 100 when viewed from the front.

The outer membrane material constituting the sub-beam 200 is connected to the outer membrane material 110 constituting the main beam 100. The shape is as shown in Figs.
The inner membrane material constituting the sub-beam 200 defines an air chamber in the same manner as the inner membrane material 120 in the main beam 100. That is, like the main beam 100, the inner membrane material in the sub-beam 200 is used to make a sub-bag (not shown). The space inside the sub-bag is the sub-air chamber. The sub-air chamber is as airtight as the upper main air chamber and the lower main air chamber in the main beam 100.
The sub-bag is a cylindrical bag with a length corresponding to the length of the sub-beam 200. Its diameter is slightly larger than the diameter of the cylinder formed by the outer membrane material of the sub-beam 200, and its length is longer than the outer membrane material 110. The space inside the sub-bag is the sub-air chamber. The sub-bag is placed in the space formed by the cylindrical outer membrane material with its length direction aligned. Although it is called a bag, the sub-bag may have both ends closed, but in this embodiment, both ends are open, as described below.

As described above, the front main beam 100 and the intermediate main beam 100, and the intermediate main beam 100 and the rear main beam 100 are each connected by seven sub-beams 200.
Of these seven sub beams 200, the five sub beams 200 located on the upper side are configured to connect the main beam upper parts 100U of the main beam 100. In addition, one of the other two sub beams 200 is configured to connect one of the two main beam lower parts 100D, and the other is configured to connect the other of the two main beam lower parts 100D. Here, one of the main beam lower parts 100D (or one main beam lower part 100D) and the other of the main beam lower parts 100D (or the other main beam upper part 100U) refer to the main beam lower part 100D on the left side in FIG. 3 and FIG. 5(B) among the main beam lower parts 100D included in the three main beams 100, and the latter refers to the main beam lower part 100D on the right side in FIG. 3 and FIG. 5(B) among the main beam lower parts 100D included in the three main beams 100. Of course, the relationship between "one" and "the other" here may be interchanged.
In addition, both ends of the sub-bag inside the sub-beam 200 that connects the main beam upper parts 100U to each other are connected to the upper main bag located inside the main beam upper part 100U at the part where the sub-beam 200 including the sub-bag is connected in such a manner that the sub-air chamber and the main air chamber are communicated with each other. As a result, the upper main air chambers in the main beam upper parts 100U of the three main beams 100 are all communicated with each other via the sub-air chambers in the sub-beams 200 that connect the main beam upper parts 100U to each other.
Similarly, both ends of the sub-bag inside the sub-beam 200 that connects the lower parts 100D of one main beam are connected to the lower main bag located inside the lower part 100D of one main beam at the portion where the sub-beam 200 including the sub-bag is connected, in a manner that communicates the sub-air chamber and the main air chamber. As a result, the lower main air chambers in the lower part 100D of one main beam of the three main beams 100 are all in communication via the sub-air chambers in the sub-beam 200 that connects the lower parts 100D of one main beam.
Similarly, both ends of the sub-bag inside the sub-beam 200 that connects the other main beam lower parts 100D are connected to the lower main bag located inside the other main beam lower part 100D at the part where the sub-beam 200 including the sub-bag is connected in such a manner that the sub-air chamber and the main air chamber are communicated with each other. As a result, the lower main air chambers in the other main beam lower parts 100D of the three main beams 100 are all communicated with each other via the sub-air chambers in the sub-beams 200 that connect the other main beam lower parts 100D.
The connection between the upper main bag or the lower main bag in the main beam 100 and the end of the sub-bag in the sub-beam 200 described above is made to maintain the above-mentioned level of airtightness.

Next, a method for erecting the air beam structure X described above will be described mainly with reference to FIG.
When an air beam structure X is to be erected, first, the air beam structure X, with none of its air chambers (upper main air chamber, lower main air chamber, sub-air chamber) filled with air, is spread out on the ground at a specified location where the air beam structure X is to be erected.
In this state, the first process is performed. When performing the first process, first, the tip of the air supply pipe 510, which is a pipe extending from the blower 500, is connected to any one of the connection ports 131 present near both lower ends of the main beam upper portion 100U of the main beam 100 (FIG. 6(A)). In this state, the connection port 131 to which the air supply pipe 510 is connected is of course open, but the other connection ports 131, 132, 133 are closed. Both the blower 500 and the air supply pipe 510 can be publicly known or well-known ones. An example of the blower 500 is, for example, (general name, or specific manufacturer/seller + product name).

Air is sent from the blower 500 to the main beam upper part 100U connected to the air supply pipe 510 of the air beam structure X, and air is filled. As described above, the upper main air chambers in the main beam upper part 100U of the three main beams 100 are all in communication with each other via the sub-air chambers in the sub-beams 200 that connect the main beam upper parts 100U to each other. Therefore, by filling with air, air is filled in all the upper main air chambers in all the main beam upper parts 100U of the three main beams 100 included in the air beam structure X and all the sub-air chambers in all (i.e., 10) sub-beams 200 whose both ends are connected to the main beam upper part 100U. As a result, the main beam upper part 100U and the sub-beams 200 connected thereto of the air beam structure X are deformed to the expected shape, that is, the shape shown in Figures 1 to 3, and the main beam upper part 100U rises up accordingly (Figure 6 (B)). In the first step, by connecting at least one other blower 500 to at least one of the connection ports 131, 132, 133 connected to the space filled with air via an air supply pipe 510, it is also possible to use the other blower 500 to send air. In other words, a plurality of blowers can be used to fill the space with air in the first step. This is the same for the second and third steps described below.
This completes the first step. The three parallel main beam upper parts 100U are connected to each other by the sub-beams 200, which maintain a linear shape by filling the sub-bags with air between adjacent ones, and therefore can stand on their own.
At this time, the height of the three main beam upper parts 100U of the air beam structure X in the self-supporting portion is lower than the height of the original main beam in the completed air beam structure X, and the weight of that portion is also lighter than the weight of the completed air beam structure X, and the weight is not that heavy. Therefore, that portion of the air beam structure X is stably self-supporting, and remains stable during the process of becoming self-supporting.

Next, the second process is performed. When the second process is performed, first, the tip of the air supply pipe 510 extending from the blower 500 is removed from the connection port 131 of the main beam upper part 100U, and the tip of the air supply pipe 510 is connected to an appropriate one of the connection ports 132 and 133 provided on each of the three main beam lower parts 100D. Of course, the connection port 132 or 133 to which the air supply pipe 510 is attached is opened, and the other connection ports 131, 132, and 133 are all closed.
In this state, the blower 500 sends air toward the main beam lower part 100D connected to the air supply pipe 510 of the air beam structure X, filling it with air. As described above, the lower main air chambers in the three one-side main beam lower parts 100D are all in communication with each other via the sub-air chambers in the sub-beam 200 that connects the one-side main beam lower parts 100D. Therefore, by filling with air, air is filled in all of the lower main air chambers in the one-side main beam lower parts 100D of the three main beams included in the air beam structure X, and in all of the sub-air chambers in one sub-beam 200 whose both ends are connected to the one-side main beam lower part 100D. As a result, the one-side main beam lower part 100D and the sub-beam 200 connected thereto of the air beam structure X are deformed to the expected shape, that is, the shape shown in Figures 1 to 3, and the one-side main beam lower part 100D rises up accordingly (Figure 6(C)). The three parallel lower parts 100D of one of the main beams are connected to each other by sub-beams 200, each of which maintains a linear shape by having air filled in its sub-bag, so that the adjacent parts are free-standing.
This completes the second process. At this time, air is filled only in a portion of the air beam structure X, so that portion of the air beam structure X stands independently in a stable manner and remains stable even during the process of standing independently.

Next, the third step is performed. When the third step is performed, first, the tip of the air supply pipe 510 extending from the blower 500 is removed from the connection port 132 or the connection port 133 of one of the main beam lower parts 100D, and the tip of the air supply pipe 510 is connected to any of the appropriate connection ports 132 and 133 provided on each of the other three main beam lower parts 100D. Of course, the connection port 132 or the connection port 133 to which the air supply pipe 510 is attached is opened, and the other connection ports 131, 132, and 133 are all closed.
In this state, the blower 500 sends air toward the main beam lower part 100D connected to the air supply pipe 510 of the air beam structure X, filling it with air. As described above, the lower main air chambers in the three other main beam lower parts 100D are all in communication with each other via the sub-air chambers in the sub-beams 200 that connect the other main beam lower parts 100D, so that the filling of air fills all the lower main air chambers in the other main beam lower parts 100D of the three main beams included in the air beam structure X, and all the sub-air chambers in one sub-beam 200 whose both ends are connected to the other main beam lower part 100D. As a result, the other main beam lower part 100D and the sub-beam 200 connected thereto of the air beam structure X are deformed to the expected shape, that is, the shape shown in Figs. 1 to 3, and the other main beam lower part 100D rises up accordingly (Fig. 6(D)). The three parallel lower parts 100D of the other main beam are connected to each other by sub-beams 200, each of which maintains a linear shape by having air filled in its sub-bag, so that the adjacent parts are free-standing.
This completes the third step. At this time, air is filled only in a portion of the air beam structure X, so that portion of the air beam structure X becomes stable and remains stable even during the process of becoming self-supporting.
The tip of the air supply pipe 510 extending from the blower 500 is removed from the connection port 132 or the connection port 133 of the other main beam lower part 100D, and the connection port 132 or the connection port 133 connected to the air supply pipe 510 is closed, and the air beam structure X is completed.
Once the air beam structure X is completed, it can be covered with a membrane material to complete the temporary tent. The configuration of the membrane material covering the air beam structure X and the method of covering the air beam structure X with the membrane material can be in accordance with the prior art. In addition, the timing for covering the air beam structure X with the membrane material can be before the first process is performed.

Incidentally, as mentioned above, the airtightness of the air chambers (upper main air chamber, lower main air chamber, sub air chamber) in the air beam structure X may not be perfect. There is also a possibility that the airtightness may be lost after the air beam structure X is erected. Therefore, if no measures are taken, when the air filled in each air chamber in the air beam structure X leaks out little by little, the rigidity of the completed air beam structure X will be lost, and the air beam structure X may eventually deform or even collapse.
Therefore, in this embodiment, air is supplied to the air chamber of the air beam structure X as necessary even after completion.

In this embodiment, after the third step is completed or after the air beam structure X is completed, some modification is made to the air beam structure X as shown in FIG.
As described above, in the air beam structure X in the state where the third process is completed, the air chamber in the air beam structure X is divided into three.
In other words, the air beam structure X has three air chambers: a series of air chambers (tentatively referred to as the "first air chamber") consisting of the upper main air chamber in the main beam upper parts 100U of the three main beams 100 and the sub-air chambers in the sub-beams 200 connecting the main beam upper parts 100U; a series of air chambers (tentatively referred to as the "second air chamber") consisting of the lower main air chamber in one of the three main beam lower parts 100D and the sub-air chambers in the sub-beams 200 connecting the one main beam lower parts 100D; and a series of air chambers (tentatively referred to as the "third air chamber") consisting of the lower main air chamber in the other of the three main beam lower parts 100D and the sub-air chambers in the sub-beams 200 connecting the other main beam lower parts 100D.
It is time-consuming to fill each of these three air chambers with air individually, and the cost increases if, for example, three blowers are used.
In this embodiment, therefore, first, the above-mentioned three air chambers, that is, the first air chamber to the third air chamber, are all connected to each other, thereby forming the three air chambers into a series of connected air chambers.

Although not limited to this, in this embodiment, connection ports 131, 132, and 133 provided on each of the three main beams 100 are utilized to connect the first air chamber to the third air chamber.
The connection port 131 is connected to the first air chamber, and the connection port 132 and the connection port 133 are connected to the second or third air chamber. Therefore, by connecting one of the connection ports 131 connected to the first air chamber to one of the connection ports 132 and 133 connected to the second air chamber by, for example, a specified tube, and by connecting the other one of the connection ports 131 connected to the first air chamber to one of the connection ports 132 and 133 connected to the third air chamber by, for example, another specified tube, the first air chamber to the third air chamber become a continuous air chamber.
Although not necessarily required, in this embodiment, a tube 600 connects one of the three main beams 100, for example the connection port 131 (the connection port 131 on the lower part 100D of one of the main beams) in the frontmost main beam 100 to a connection port 132 connected to the second air chamber located immediately below, and a tube 600 connects another of the connection ports 131 connected to the first air chamber to the connection port 132 connected to the third air chamber located immediately below (Figure 7).
In addition, one of the other connection ports 131, 132, and 133, all of which are connected to somewhere in the connected first air chamber to third air chamber (not limited to this, in this embodiment, the connection port 133 in the other main beam lower part 100D of the main beam 100 in the front) is connected to the tip of the air supply pipe 510 extending from the blower 500. This makes it possible to fill air from the air supply pipe 510 to all parts of the connected first air chamber to third air chamber in the air beam structure X.

In this embodiment, although not necessarily limited to this, the air pressure in the series of first to third air chambers is controlled to be kept within a predetermined range using the blower 500. Specifically, the air pressure in the series of first to third air chambers is measured at appropriate time intervals or constantly by a pressure sensor 530, for example, built into the blower 500. In addition, an internal pressure control device 540, also built into the blower 500, performs the above-mentioned control based on air pressure data received from the pressure sensor 530.
Specifically, the internal pressure control device 540 drives the blower 500 when the air pressure measured by the pressure sensor 530 is lower than a first air pressure, which is a predetermined air pressure, and stops the blower 500 when the air pressure measured by the pressure sensor 530 reaches a second air pressure, which is a predetermined air pressure higher than the first air pressure.
For example, when the pressure measured by the pressure sensor 530 at that time is lower than the first air pressure, the internal pressure control device 540 generates a drive signal, which is a signal for driving the blower 500, and sends the drive signal to the blower 500. When the pressure measured by the pressure sensor 530 at that time reaches the second air pressure, the internal pressure control device 540 generates a stop signal, which is a signal for stopping the blower 500, and sends the stop signal to the blower 500.
Therefore, the blower 500 receives a drive signal and a stop signal, and automatically drives to send air from the first air chamber to the third air chamber when the air pressure in the first air chamber to the third air chamber becomes lower than the first air pressure, and automatically stops when the air pressure in the first air chamber to the third air chamber reaches the second air pressure.

In this embodiment, the first air chamber, the second air chamber, and the third air chamber are connected to each other using two pipes 600, making them into a single air chamber. However, it is of course possible to maintain the air pressure in each of the first air chamber, the third air chamber, and the third air chamber within a predetermined range as described above using a blower 500 and a pressure sensor 530.
Furthermore, when carrying out steps 1 to 3, it is of course possible to utilize the pressure sensor 530 and internal pressure control device 540 configured as described above to confirm whether the air chamber has been filled with air until the air pressure in the chamber reaches an appropriate pressure.
As is clear from the above description, some of the connection ports 131, 132, and 133 were not used in this embodiment. Even when maintaining the shape of the air beam structure X using the blower 500 and the pressure sensor 530 after the third process, the method for erecting the air beam structure X described in this embodiment can be carried out in principle if there are five connection ports 131, 132, and 133 in total. It is obvious that the number and respective positions of the connection ports 131, 132, and 133 can be modified within the scope of feasibility.
It is also obvious that the number of blowers 500 used in this case does not need to be one.

Second Embodiment
The air beam structure X in the second embodiment has a significant portion in common with the air beam structure X in the first embodiment.
The so-called side configuration formed by the outer membrane material 110 is substantially the same in the air beam structure X in both embodiments.
The air beam structure X in the second embodiment differs from the air beam structure X in the first embodiment in the configuration of the air chamber formed by the inner membrane material 120.
As described above, the air chamber in the air beam structure X in the first embodiment is divided into three air chambers, the first air chamber, the second air chamber, and the third air chamber. In this embodiment, the air chamber is divided into more fine chambers.
In the second embodiment, the sub-air chambers in all the sub-beams 200 are independent air chambers. In the first embodiment, the sub-bag of each sub-beam 200 is connected to the upper main bag or the lower main bag in the main beam 100 with both ends open, but in the first embodiment, the sub-bag of each sub-beam 200 is closed at both ends.
As a result, in the second embodiment, the air chambers within the air beam structure X are such that, within each main beam 100, there is an upper main air chamber formed by an upper main bag and a lower main air chamber formed by two lower main bags, which are independent of each other, and each of the total of 14 sub-beams 200 has an independent sub-air chamber formed by a sub-bag.
In this embodiment, the sub-air chambers are independent of each other and therefore need to be filled with air individually. Accordingly, each sub-air chamber is provided with a connection port similar to connection ports 131, 132, and 133.

Next, a method for erecting the air beam structure X in the second embodiment will be described.
To set up the air beam structure X in the second embodiment, first, the sub-air chambers of, for example, all the sub-beams 200 in the air beam structure X in a state where the air beam structure X is spread out in an appropriate place are filled with air.
Next, in the first step, air is filled into the upper main air chambers of the main beam upper part 100U of the three main beams. Air may be filled using the blower 500 and the air supply pipe 510. In this case, since the upper main air chambers of each main beam upper part 100U are independent of each other, the air supply pipes 510 extending from the three blowers 500 should be independently connected to each upper main air chamber. Alternatively, the tip of the air supply pipe 510 extending from one blower 500 should be branched into three, and the tips of the three branched pipes should be connected to the upper main air chambers of the main beam upper part 100U, respectively.
When air is simultaneously sent to the upper main air chambers of the three main beam upper parts 100U and filled with air, the upper main air chambers in all of the main beam upper parts 100U of the three main beams 100 included in the air beam structure X are filled with air. As a result, the main beam upper parts 100U and the sub-beams 200 connected thereto of the air beam structure X rise into the shape shown in FIG. 6B.
This completes the first step. The three parallel main beam upper parts 100U are connected to each other by the sub-beams 200, which maintain a linear shape by filling the sub-bags with air between adjacent ones, and therefore can stand on their own.

Next, the second process is performed. When the second process is performed, air is simultaneously filled into each of the three lower main air chambers in one of the main beam lower parts 100D, in the same manner as in the first process.
When air is filled in the lower main air chamber in one of the three main beam lower parts 100D, the one main beam lower part 100D and the sub-beam 200 connected thereto of the air beam structure X rise up into the shape shown in Figure 6 (C).
The three lower main beam portions 100D are connected to each other by sub-beams 200, each of which maintains a linear shape by having air filled in its sub-bag, so that the adjacent lower main beam portions 100D are self-supporting.

Next, the third process is performed. When the third process is performed, air is simultaneously filled into each of the lower main air chambers in the three other main beam lower parts 100D, in the same manner as in the first process.
When air is filled in the lower main air chamber in the three other main beam lower parts 100D, the other main beam lower part 100D and the sub-beam 200 connected thereto of the air beam structure X rise up into the shape shown in Figure 6 (D).
The three other main beam lower parts 100D are self-supporting because adjacent ones are connected to each other by sub-beams 200 that maintain a linear shape by having air filled in the sub-bags therein.
This completes the third step, and the installation of the air beam structure X is completed.

In the air beam structure X of the second embodiment, the air pressure in each air chamber can also be kept within a predetermined range by using the blower 500, the pressure sensor 530, and the internal pressure control device 540. In this case, the air pressure in the air chamber is managed for each air chamber.
Of course, by connecting some (or all) of the air chambers together using a pipe 600, the air pressure within the combined air chambers can be controlled by a pair of blowers 500 and a combination of a pressure sensor 530 and an internal pressure control device 540.

Third Embodiment
The air beam structure X in the third embodiment has a significant portion in common with the air beam structure X in the first embodiment.
As described above, the upper main air chamber in each main beam 100 of the air beam structure X in the first embodiment is one air chamber, and the upper main air chambers in adjacent main beams 100 are connected to each other via a sub-air chamber in the sub-beam 200. As a result, a first air chamber, which is a series of air chambers, exists inside a portion above a portion corresponding to the upper main air chamber in each main beam 100 of the air beam structure X in the first embodiment.
In contrast, in the air beam structure of the third embodiment, the first air chamber is divided into a plurality of chambers.
For example, as shown in the side view of Fig. 8(A) and the front view of Fig. 8(B), the first air chamber is divided into three parts, a shaded part and a non-shaded part. The three air chambers corresponding to the part corresponding to the first air chamber will be referred to as the first A air chamber a, the first B air chamber b, and the first C air chamber c, from the left in Fig. 8(B).
Although not limited thereto, in the portion of the first air chamber corresponding to the first A air chamber a, the air chambers in adjacent main beams 100 are communicated with each other via the sub-air chamber in the sub-beam 200. Of course, as described in the second embodiment, the sub-air chamber in the sub-beam 200 does not need to communicate the main beams 100 on both sides of the sub-beam 200 with each other.
Similarly, although not limited to this, in the third embodiment, even in the portions corresponding to the first B air chamber b and the first C air chamber c of the first air chamber, the air chambers in adjacent main beams 100 are connected via the sub-air chambers in the sub-beam 200.

The method of erecting the air beam structure X of the third embodiment is generally similar to that of the first embodiment.
The difference is that the first process of raising the upper part 100U of the main beam of the air beam structure is divided into three processes of filling air into the first A air chamber a, the first B air chamber b, and the first C air chamber c.
When the first step is executed in the third embodiment, it is performed as shown in FIG.
When carrying out the first process, air is filled in from the uppermost air chamber among the first A air chamber a, the first B air chamber b, and the first C air chamber c which constitute the first air chamber of the air beam structure X, i.e., from the first B air chamber b, toward the lower air chambers.
First, the tip of the air supply pipe 510 extending from the blower 500 is connected to an appropriate connection port among the connection ports communicating with the first B air chamber b (FIG. 9(A)). Next, air is sent from the blower 500 toward the first B air chamber b to fill it with air. One or more blowers 500 may be used at this time. As a result, the entirety of the single communicating first B air chamber b is filled with air. As a result, the portion of the air beam structure X corresponding to the first B air chamber b is deformed to the expected shape, i.e., the shape shown in FIG. 8, and stands up (FIG. 9(B)).
Similarly, either the first A air chamber a or the first C air chamber c, which are located below the first B air chamber b, is filled with air. Since the first A air chamber a and the first C air chamber c are at the same height, air may be filled from either of them. In this embodiment, the first A air chamber a is filled with air first (FIG. 9(C)), and then the first C air chamber c is filled with air (FIG. 9(D)).
With this, the entire portion of the air beam structure X corresponding to the first air chamber is raised, and the first step is completed.

This state is the same as the state shown in FIG.
Therefore, by successively carrying out the second and third steps, the air beam structure X is completed.
After the third step is performed, the blower 500 can be connected to the air beam structure X to prepare for the case where the airtightness of the air chamber of the air beam structure X is broken, as in the first embodiment. At that time, if the first A air chamber a, the first B air chamber b, the first C air chamber c, the second air chamber, and the third air chamber are connected to one air chamber by using, for example, the pipe 600 described in the first embodiment, it becomes possible to maintain the air pressure of the one air chamber within a planned range by using one blower 500 (or the pressure sensor 530 and the internal pressure control device 540) as in the first embodiment. Of course, it is not necessary to use only one blower 500 at this time. It is also possible to maintain the air pressure in each air chamber by the blower 500 connected to each air chamber without connecting the first A air chamber a, the first B air chamber b, the first C air chamber c, the second air chamber, and the third air chamber.

In the third embodiment, the portion of the air beam structure X that corresponds to the first chamber is divided into three. Of course, the first chamber does not have to be divided into three.
For example, the first air chamber can be formed into two of the same length in the longitudinal direction of the main beam upper portion 100U constituting the first air chamber (forming air chamber 1A and air chamber 1B from the left side in Figure 8 (B)), or into four of the same length (forming air chamber 1A, air chamber 1B, air chamber 1C, and air chamber 1D from the left side in Figure 8 (B)).
In the former case, since the first A air chamber and the first B air chamber are at the same height, the first step may be carried out by first filling any one of them with air and then filling the other of them with air.
In the latter case, of the 1A air chamber, the 1B air chamber, the 1C air chamber, and the 1D air chamber, the 1B air chamber and the 1C air chamber are the highest and at the same height, and below them are the 1A air chamber and the 1D air chamber, which are also at the same height. Therefore, the first process can be completed by filling one and the other of the 1B air chamber and the 1C air chamber with air, and then one and the other of the 1A air chamber and the 1D air chamber with air in that order.

Fourth Embodiment
An air beam structure Y after installation, which is an example of the fourth embodiment, is shown in Fig. 10. Fig. 10(A) is a front view of the air beam structure Y, (B) is a side view, and (C) is a plan view.
The air beam structure Y is not substantially semi-cylindrical, unlike the air beam structures X in the first to third embodiments. In this respect, the air beam structure Y of the fourth embodiment is different from the air beam structures X in the first to third embodiments.

10C, the air beam structure Y in this embodiment has three legs that are connected at their vertices to form a substantially Y-shape when viewed in a plan view. The three legs together form the beam 900 in this embodiment.
As shown in Figures 10A and 10B, the three legs curve from the apex of the beam 900 toward the ground, and their lower ends are in contact with the ground. As a result, the air beam structure Y shown in Figure 10 has a substantially dome-like shape. In other words, if the air beam structure Y is covered with a membrane material, a tent having a substantially dome-like shape can be obtained.

An air chamber is provided inside each of the three legs included in the beam 900. The air chamber is airtight, as in the first embodiment. The configuration of the beam 900 can generally follow the configuration of the main beam 100 in the first embodiment, but is not limited to this, as is the case in this embodiment. The three legs are composed of an outer membrane material and an inner membrane material (not shown). The materials and functions of the outer membrane material and the inner membrane material are the same in the fourth embodiment and the first embodiment.
The inner membrane material 120 divides the space into an upper air chamber 900U and a lower air chamber 900D, which are airtight spaces.
The upper air chamber 900U is continuous in the area not shaded in Fig. 10 above the beam 900, and in this embodiment is configured in a trifurcated shape. That is, in the beam 900 in this embodiment, there is one upper air chamber 900U, although this is not limited thereto. On the other hand, the lower air chamber 900D occupies the lower part of the upper air chamber 900U inside each of the three legs of the beam 900, in other words, the shaded area in Fig. 10. There are three lower air chambers 900D. In this embodiment, the height positions of the upper ends of the three lower air chambers 900D are the same, although this is not limited thereto.
The upper air chamber 900U and the three lower air chambers 900D each have a connection port (not shown) for filling the interior of the chamber with air. The configuration and function of the connection port in the fourth embodiment can be similar to those described in the first embodiment, and are the same in this embodiment.

A method for erecting such an air beam structure Y will be described with reference to FIG.
When setting up the air beam structure Y, the beam 900 is deployed on the ground with neither the upper air chamber 900U nor the lower air chamber 900U filled with air, and the tip of the air supply pipe 510, which is a pipe extending from the blower 500, is connected to the connection port of the upper air chamber 900U (Figure 11 (A)).
Air is sent from the blower 500 to the upper air chamber 900U of the air beam structure Y to fill it with air. As a result, the part of the beam 900 of the air beam structure Y that corresponds to the upper air chamber 900U is deformed to the expected shape, that is, the shape shown in Fig. 10, and accordingly, the part of the beam 900 that corresponds to the upper air chamber 900U rises (Fig. 11(B)). At this time, if the upper air chamber 900U has multiple connection ports, it is also possible to send air from multiple blowers 500 to each connection port.
Next, the three lower air chambers 900U are filled with air one by one (FIGS. 11C and 11D). The method of filling the lower air chambers 900U with air follows the method of filling the upper air chamber 900U with air. The tip of the air supply pipe 510 extending from the blower 500 is connected to the connection port of the lower air chamber 900U, and air is sent from the blower 500 to the lower air chamber 900U.
As a result, the portions of the beam 900 that correspond to the lower air chambers 900U rise up one by one.
As a result, the beam 900 is completely erected and the setup of the air beam structure Y is completed.

In this embodiment, when filling the lower air chambers 900U with air, the lower air chambers 900U are filled with air one by one, but it is also possible to fill one of the three lower air chambers 900U with air and then fill the remaining two with air simultaneously, or to fill two of the three lower air chambers 900U with air simultaneously and then fill the remaining one with air, or to fill all three lower air chambers 900U with air simultaneously.
In addition, in this embodiment, the upper air chamber 900U is described as being connected to each other at the apex of the beam 900 and having a trifurcated shape, but the upper air chamber 900U may be divided into three at the apex of the beam 900. In that case, the upper air chamber 900U is present in a state of being divided into three in the same height range on each of the three legs. In this case, when filling the upper air chamber 900U with air, it is necessary to fill the air from the connection port provided in each of the three air chambers constituting the upper air chamber 900U. When filling the three air chambers constituting the upper air chamber 900U with air, since their height ranges do not change, it does not matter which of them the air is filled from. In addition, it does not matter if any two or three of them are filled with air at the same time.

Furthermore, the upper air chamber 900U may be divided into a plurality of sub-upper air chambers arranged in the vertical direction.
For example, as shown in the side view of Fig. 12, the upper air chamber 900U may be divided into an upper auxiliary upper air chamber 900U1 (the shaded area of the upper air chamber 900U shown in Fig. 12) having a three-pronged structure including the apex of the beam 900, and a lower auxiliary upper air chamber 900U2 (the non-shaded area of the upper air chamber 900U shown in Fig. 12; in this case, there are three lower auxiliary upper air chambers U2) located below it. In this case, both the auxiliary upper air chamber 900U1 and the auxiliary upper air chamber 900U2 are provided with connection ports.
When constructing such an air beam structure Y, air is filled in sequence from the upper auxiliary upper air chamber 900U1 to the lower auxiliary upper air chamber 900U2. In this example, since the height ranges of the lower auxiliary upper air chambers 900U2 are all the same, it does not matter which of them is filled with air, and any two or three of the auxiliary upper air chambers 900U2 may be filled with air at the same time.

The air beam structure Y of the fourth embodiment can also be connected to a blower 500 after it is set up to prevent collapse or the like in the unlikely event that the airtightness of the air chamber is broken.
When the upper air chamber 900U is a single air chamber, the upper air chamber 900U and all three lower air chambers 900U below can be connected to each other using a connection port or the like, and the air pressure of the entire series of air chambers as a whole can be maintained within an appropriate range using a single blower 500. In this case, it is obvious that the internal pressure control device 540 already described can be used.
Furthermore, if the upper air chamber 900U is divided, for example, into a sub-upper air chamber 900U1 and three sub-upper air chambers U2, by connecting these to all three lower air chambers 900U, it is possible to maintain the overall air pressure of the entire series of air chambers within an appropriate range by using only one blower 500.

100 Main beam 100U Main beam upper part 100D Main beam lower part 110 Outer membrane material 120 Inner membrane material 131 Connection port 132 Connection port 133 Connection port 200 Sub-beam 500 Blower 510 Air supply pipe 520 Branch pipe 530 Pressure sensor

Claims (16)

The vehicle is provided with a main air chamber which is an air chamber that can be filled with air, the main air chamber being divided into an upper main air chamber which is an upper air chamber, and two lower main air chambers which are air chambers located below both sides of the upper main air chamber, and the main air chamber is filled with air to maintain its predetermined shape. At least two main beams are made of a membrane material and are arranged parallel to each other when viewed in a plane, and are arch-shaped when the main air chamber is filled with air.
a plurality of sub-beams made of a membrane material, each of which is a beam that becomes straight when the sub-air chamber is filled with air and that connects adjacent main beams and has a sub-air chamber that can be filled with air and maintains a predetermined shape by filling the sub-air chamber with air;
A method for erecting an air beam structure comprising:
a first step of simultaneously filling the upper main air chambers of at least two of the main beams with air to form a predetermined shape in a portion of the main beam corresponding to each of the upper main air chambers;
a second step of filling one of the lower main air chambers of each of the at least two main beams, the one being located on the same side of the at least two main beams, with air to form a predetermined shape in a portion of each of the main beams corresponding to the one lower main air chamber;
A third step of filling the lower main air chamber of the other of at least two of the main beams with air to form a predetermined shape in a portion of the other of the main beams corresponding to the lower main air chamber;
A method for erecting an air beam structure, comprising: As sub-beams connecting at least two adjacent ones of the main beams, at least one sub-beam is provided which connects the portions of the adjacent main beams corresponding to the upper main air chamber, at least one sub-beam is provided which connects the portions of one of the adjacent main beams corresponding to the lower main air chamber, and at least one sub-beam is provided which connects the portions of the other of the adjacent main beams corresponding to the lower main air chamber;
The upper main air chambers of adjacent main beams are communicated with each other via a sub-air chamber provided in the sub-beam that connects the portions of adjacent main beams corresponding to the upper main air chambers, the lower main air chambers of one of adjacent main beams are communicated with each other via a sub-air chamber provided in the sub-beam that connects the portions of adjacent main beams corresponding to the lower main air chambers, and the lower main air chambers of the other of adjacent main beams are communicated with each other via a sub-air chamber provided in the sub-beam that connects the portions of adjacent main beams corresponding to the lower main air chambers of the other of the adjacent main beams,
In the first step, the upper main air chambers of at least two of the main beams and the sub-air chambers communicating with each other are combined, in the second step, the lower main air chambers of one of the at least two main beams and the sub-air chambers communicating with each other of the lower main air chambers are combined, and in the third step, the other lower main air chambers of the at least two main beams and the sub-air chambers communicating with each other of the lower main air chambers are combined, and air is filled in by a blower.
A method for erecting the air beam structure according to claim 1. A single blower is used in the first step, the second step, and the third step.
A method for erecting an air beam structure according to claim 2. After the third step is completed, all of the main air chambers and all of the sub-air chambers are communicated with each other,
The shapes of the main beam and the sub beam are maintained by blowing air into all of the main air chambers and all of the sub air chambers that are connected to each other as necessary using a blower.
A method for erecting the air beam structure according to claim 1. A single blower blows air into all of the main air chambers and all of the sub-air chambers that are connected to each other.
A method for erecting an air beam structure according to claim 4. After completing the third step, a space formed by the upper main air chambers of at least two of the main beams and the sub-air chamber connecting the upper main air chambers to each other is connected to a space formed by one of the lower main air chambers of at least two of the main beams and the sub-air chamber connecting the one of the lower main air chambers to each other, and a space formed by the upper main air chambers of at least two of the main beams and the sub-air chamber connecting the upper main air chambers to each other is connected to a space formed by the other lower main air chambers of at least two of the main beams and the sub-air chamber connecting the other lower main air chambers to each other,
The shapes of the main beam and the sub beam are maintained by blowing air as necessary into all of the main air chambers and all of the sub air chambers that are connected to each other with a blower.
A method for erecting an air beam structure according to claim 2. In order to communicate a space formed by the upper main air chambers of at least two of the main beams and the sub-air chamber connecting the upper main air chambers to each other, and a space formed by one of the lower main air chambers of at least two of the main beams and the sub-air chamber connecting one of the lower main air chambers to each other, the upper main air chamber and one of the sub-air chambers in one main beam are connected by a tube passing outside the main beam,
In order to communicate a space formed by the upper main air chambers of each of the at least two main beams and the sub-air chamber communicating the upper main air chambers with each other, and a space formed by the other lower main air chambers of each of the at least two main beams and the sub-air chamber communicating the other lower main air chambers with each other, the upper main air chamber in one main beam is connected to the other sub-air chamber by a tube passing outside the main beam.
A method for erecting an air beam structure according to claim 6. Using the blower, the air pressure in all of the main air chambers and all of the sub-air chambers that are connected to each other is maintained within a predetermined range.
A method for erecting an air beam structure according to any one of claims 4 to 6. a pressure sensor is used for measuring the air pressures in all of the connected main air chambers and all of the connected sub-air chambers over time, and when the air pressure measured by the pressure sensor is lower than a first air pressure which is a predetermined air pressure, the blower is driven, and when the air pressure measured by the pressure sensor reaches a second air pressure which is a predetermined air pressure higher than the first air pressure, the blower is stopped.
A method for erecting an air beam structure according to claim 8. The upper main air chambers in at least two of the main beams are divided into a plurality of sub-upper main air chambers, the sub-upper main air chambers being equal in number and located at positions corresponding to each other when the main beam is viewed from the front,
The first step comprises:
A process A of simultaneously filling the uppermost sub-upper main air chambers of the upper main air chambers of at least two of the main beams with air, thereby forming the shapes of the portions of the main beam corresponding to the sub-upper main air chambers into a predetermined shape;
Next, in step B, air is simultaneously filled into the sub-upper main air chambers located at the uppermost positions corresponding to each other among the sub-upper main air chambers located below the sub-upper main air chambers filled with air in step A in each of the upper main air chambers of at least two of the main beams, thereby forming the shapes of the parts of the main beam corresponding to the sub-upper main air chambers into a predetermined shape;
Contains
The process B is repeated until all the sub-upper main air chambers are filled with air.
A method for erecting the air beam structure according to claim 1. At least one sub-beam is provided for connecting adjacent ones of at least two of the main beams, the sub-beam connecting the sub-upper main air chambers located at corresponding positions of the adjacent main beams,
The secondary upper main air chambers located at corresponding positions of the adjacent main beams are connected to each other via the sub-beams that connect them to each other,
In the A step and the B step, the secondary upper main air chambers located at corresponding positions in at least two of the main beams and the sub-air chambers communicating therewith are filled with air by a blower.
A method for erecting an air beam structure according to claim 10. In the A step and the B step, one blower air is sent to the secondary upper main air chambers located at corresponding positions in at least two of the main beams and the sub-air chambers communicating therebetween.
A method for erecting an air beam structure according to claim 11. After completing the third step, all of the sub-upper main air chambers and all of the sub-air chambers in all of the main air chambers are communicated with each other,
The shapes of the main beam and the sub beam are maintained by blowing air collectively into all the communicating secondary upper main air chambers and all the communicating sub air chambers as necessary using a blower.
A method for erecting an air beam structure according to any one of claims 10 to 12. A single blower blows air into all of the secondary upper main air chambers and all of the sub-air chambers that are connected to each other.
A method for erecting an air beam structure according to claim 13. Using the blower, the air pressure in all of the communicating secondary upper main air chambers and all of the communicating sub-air chambers is maintained within a predetermined range.
A method for erecting an air beam structure according to claim 13 or 14. a pressure sensor is used for measuring the air pressure in all of the connected secondary upper main air chambers and all of the sub-air chambers over time, and when the air pressure measured by the pressure sensor is lower than a first air pressure which is a predetermined air pressure, the blower is driven, and when the air pressure measured by the pressure sensor reaches a second air pressure which is a predetermined air pressure higher than the first air pressure, the blower is stopped.
A method for erecting an air beam structure according to claim 15.

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