JP7519079B2 - Waterstop and waterstop structure - Google Patents

Description

This invention relates to waterstops and waterstop structures, and in particular to waterstops and waterstop structures for preventing water from entering a structure from the outside.

Various technologies have been proposed for water stop devices that are installed to prevent water from entering due to floods, etc.

For example, Patent Document 1 discloses a parent pile-type waterproof protective fence that includes a horizontal sheet pile and parent piles having a hollow resin plate and a plurality of reinforcing members that are band-shaped plate members provided on the surface or both sides of the resin plate, and that is formed by bridging the left and right side edges of the horizontal sheet pile between the parent piles.

Conventional waterproof guardrails such as those in Patent Document 1 above are lightweight due to the hollow structure of the resin plate-like body of the crossbar, and are also highly durable due to the provision of reinforcing bodies in the resin plate-like body. However, in the case of guardrails with a structure in which the crossbar is pressed against the bottom surface, there is a problem in that the reduced weight causes the crossbar to float up when the water is stopped, reducing the water stopping ability. Therefore, the following invention has been proposed.

Patent Document 2 discloses a water-stopping device that prevents water from entering from one side to another, and that has an opening for introducing water into the water-stopping device, which is provided with a frame body and vertical stopper panel, and is formed in the lower part of the water-stopping device on the side where water enters.

Patent No. 4955827 JP 2017-071975 A

In conventional water stop devices such as that in Patent Document 2, when water surges in during a flood, the surged water is introduced into the water stop device through an opening, which increases the weight of the water stop device. At that time, a force is applied to press the water stop device vertically against the installation surface, increasing stability and improving watertightness. In particular, the frequency of localized heavy rain has increased in recent years, causing problems not only with river flooding, but also with inland flooding in urban areas, which causes water levels to rise suddenly in residential areas. Accordingly, the frequency with which water stop devices are needed has also increased, and there has been a demand for ones that are more powerful and easier to use.

This invention was made to solve the above problems, and aims to provide a waterstop and waterstop structure that is easy to handle when not in a waterstop state, and prevents the waterstop from floating up when in a waterstop state, providing stable waterstop performance.

In order to achieve the above-mentioned object, the invention described in claim 1 is a watertight waterstop plate that is installed in a watertight state on a pair of structures installed at a predetermined distance and on a floor surface, and comprises a solid structural part that is attached to the floor surface and has a solid structure, and a hollow structural part that is provided above the solid structural part, has a hollow structure, and has an opening that allows liquid to be injected into the internal space of the hollow structure , and the solid structural part has a specific gravity greater than that of water .

When configured in this way, if no liquid is injected into the hollow structure, the waterstop is lighter than a waterstop made entirely of a solid structure. Also, if liquid is injected into the hollow structure, the weight of the entire waterstop can be increased by the amount of the injected liquid.

The invention described in claim 2 is the same as the invention described in claim 1, in which the solid structure is made of a material with a specific gravity greater than that of water.

This configuration makes it difficult for the waterstop to float up in the water when water is stopped.

The invention described in claim 3 is the configuration of the invention described in claim 1 or claim 2, in which the hollow structure is formed by connecting multiple tubular members that extend in the longitudinal direction and have spaces inside so that they can be freely attached and detached in the height direction, and each of the multiple tubular members has a communication port that communicates with the spaces of the tubular members that are in contact with each other.

This configuration makes it possible to divide the hollow structure into individual cylindrical members.

The invention described in claim 4 is the same as the invention described in claim 3, except that the solid structural part and the hollow structural part are provided with a watertight shielding member in the part that is located on the structure side when installed.

This configuration can prevent water that has entered between the tubular members from being discharged into the structure.

The invention described in claim 5 is a configuration of the invention described in any one of claims 1 to 4, in which the hollow structure has at least one water passage opening through which water can pass to the inside and outside of the hollow structure, and an inflow/outflow control means that allows water to flow in from the outside of the hollow structure through the water passage opening, while preventing water from flowing out from the inside of the hollow structure.

In this way, water flowing in through the water inlet can be introduced into the hollow structure, and additional water can be injected through the opening and stored.

The invention described in claim 6 is a configuration of the invention described in any one of claims 1 to 4, in which the hollow structure has at least one water passage port that allows water to pass between the inside and outside of the hollow structure, and a detachable inflow/outflow prevention means that prevents water from entering the hollow structure from the outside through the water passage port and water from exiting the hollow structure from the inside.

When configured in this way, it is possible to switch between a state in which water entering through the water passage can be introduced into the hollow structure, and a state in which water can be poured in through the opening and stored.

The invention described in claim 7 is a configuration of the invention described in any one of claims 1 to 6, in which the hollow structure portion has a support plate that divides a part of the space inside the hollow structure and has a shape that allows the divided spaces to communicate with each other.

When configured in this way, the support plate functions as a reinforcing plate when external water pressure is applied to the hollow structure, improving the strength of the waterstop.

The invention described in claim 8 is the configuration of the invention described in any one of claims 1 to 7, in which the hollow structure has an outlet for discharging water accumulated inside the hollow structure.

This configuration allows water that accumulates inside the hollow structure to be easily drained.

The invention described in claim 9 is a waterstop structure that is attached to a pair of structures installed at a predetermined distance, and includes a pair of mounting members that are attached to each of the structures in a watertight manner vertically from the floor surface, and a waterstop described in any one of claims 1 to 8 that is installed in a watertight manner via the mounting members on each of the structures.

With this configuration, the mounting member allows the waterstop to be securely attached to the structure.

The invention described in claim 10 is a waterstop structure that is attached to a pair of structures installed at a specified distance, and includes a pair of mounting members that are attached to each of the structures in a watertight manner vertically from the floor surface, and a waterstop body that is watertight and has an internal space, and the waterstop body is provided with at least one water passage hole at its lower part that allows water to pass between the inside and outside of the waterstop body, and an air vent hole at its upper part that allows gas to pass between the inside and outside of the waterstop body.

When configured in this way, when water flows from the outside into the waterstop body, the gas inside the waterstop body is exhausted through the ventilation hole, allowing water to flow into the waterstop body more quickly than if there was no ventilation hole.

The invention described in claim 11 is the same as the invention described in claim 10, in which the waterstop body has multiple water passage openings in the height direction.

When configured in this way, when the water level outside the waterstop body rises, water can flow into the waterstop body through a water passage at the corresponding height.

The invention described in claim 12 is the configuration of the invention described in claim 10 or claim 11, in which the waterstop body is formed by connecting multiple tubular members that extend in the longitudinal direction and have spaces inside so that they can be freely attached and detached in the height direction, and each of the multiple tubular members has a communication port that communicates with the spaces of the tubular members that are in contact with each other.

This configuration makes it possible to divide the waterstop body into individual tubular members.

The invention described in claim 13 is the configuration of the invention described in claim 12, in which the waterstop body is provided with a watertight shielding member on the part that is located on the structure side when installed.

This configuration can prevent water that has entered between the tubular members from being discharged into the structure.

The invention described in claim 14 is the configuration of the invention described in claim 13, in which the shielding member is provided so as to further cover the portion of the waterstop body that is located on the floor surface side when the waterstop body is installed.

This configuration allows water that has entered through the gaps between the tubular members to be expelled through the gap between the waterstop body and the shielding member.

The invention described in claim 15 is a configuration of the invention described in any one of claims 10 to 14, in which the waterstop body has an inflow/outflow control means that allows water to flow in from the outside through the water passage hole while preventing water from flowing out from the inside, and water can be injected through the air vent.

With this configuration, water flowing in through the water inlet can be introduced into the waterstop body, and additional water can be injected through the air vent and stored.

The invention described in claim 16 is the configuration of any of the inventions described in claims 10 to 14, in which the waterstop body has a removable inflow/outflow prevention means that prevents water from entering from the outside through the water passage hole and water from exiting from the inside, and water can be injected through the air passage hole.

When configured in this way, it is possible to switch between a state in which water flowing in through the water passage opening can be introduced into the waterstop body, and a state in which water can be injected through the air vent opening and stored.

The invention described in claim 17 is the configuration of the invention described in any one of claims 10 to 16, in which the waterstop body further has a support plate that divides a part of the internal space and has a shape that allows the divided spaces to communicate with each other.

When configured in this way, the support plate functions as a reinforcing plate when external water pressure is applied to the waterstop body.

As explained above, the invention described in claim 1 is lighter than a waterstop made entirely of a solid structure when no liquid is injected into the hollow structure. Furthermore, when liquid is injected into the hollow structure, the weight of the entire waterstop can be increased by the amount of the injected liquid. Therefore, in a non-waterstop state, the waterstop remains easy to handle, and in a waterstop state, the waterstop can quickly obtain a weight appropriate for waterstopping according to the external water conditions, preventing the waterstop from floating up.

The invention described in claim 2 has the same effect as the invention described in claim 1, but in addition, the waterstop is less likely to float up in the water when in a water-stopping state, further improving the water-stopping properties of the waterstop.

The invention described in claim 3 has the same effect as the invention described in claim 1 or 2, but also makes it possible to divide the hollow structure into individual cylindrical members, allowing the waterstop to be stored compactly and making it easy to transport.

The invention described in claim 4 has the same effect as the invention described in claim 3, but it can also prevent water that has entered between the tubular members from being discharged to the structure, further improving the watertightness of the waterstop.

The invention described in claim 5 has the effect of any of the inventions described in claims 1 to 4, and in addition, water flowing in through the water passage can be introduced into the hollow structure of the hollow structure, and additional liquid can be injected and stored through the opening, so that even if the water level outside the waterstop plate rises suddenly, water and liquid can be reliably stored inside the hollow structure of the hollow structure.

The invention described in claim 6 has the effect of any of the inventions described in claims 1 to 4, and can switch between a state in which water entering through the water passage can be introduced into the hollow structure of the hollow structure part and a state in which liquid can be injected from the opening and stored, so that even if the water level outside the waterstop plate rises suddenly, water and liquid can be reliably stored inside the hollow structure of the hollow structure part.

The invention described in claim 7 has the same effect as any of the inventions described in claims 1 to 6, and also improves the strength of the waterstop because the support plate functions as a reinforcing plate when water pressure is applied to the hollow structure from the outside.

The invention described in claim 8 has the same effect as any of the inventions described in claims 1 to 7, and also makes it easy to drain water that has accumulated inside the hollow structure of the hollow structure, facilitating the removal of a used waterstop.

The invention described in claim 9 has the same effect as any of the inventions described in claims 1 to 8, but the mounting member allows the waterstop to be securely attached to the structure, making the installation of the waterstop structure more stable.

In the invention described in claim 10, when water flows from the outside into the inside of the waterstop body, the gas inside the waterstop body is discharged through the ventilation hole, and water can flow into the inside of the waterstop body more quickly than if there was no ventilation hole. Therefore, in the waterstop state, the appropriate weight for waterstopping can be quickly obtained according to the state of the water outside, preventing the waterstop body from floating up and stabilizing the waterstopping ability of the waterstop structure.

In addition to the effect of the invention described in claim 10, the invention described in claim 11 improves the efficiency of water flowing into the waterstop body by allowing water to flow into the waterstop body through a water passage at a corresponding height when the water level outside the waterstop body rises.

The invention described in claim 12 has the same effect as the invention described in claim 10 or 11, but also makes it possible to separate the waterstop body into individual tubular members, making the waterstop structure compact to store and easy to transport.

The invention described in claim 13 has the same effect as the invention described in claim 12, but also prevents water that has entered between the tubular members from being discharged to the structure, thereby further improving the watertightness of the waterstop structure.

The invention described in claim 14 has the same effect as the invention described in claim 13, but also allows water that has entered between the tubular members to be discharged through the gap between the waterstop body and the shielding member, further improving the watertightness of the waterstop structure.

The invention described in claim 15 has the effect of any of the inventions described in claims 10 to 14, and in addition, it is possible to introduce water flowing in through the water passage into the inside of the waterstop body, and to inject and store additional liquid through the air vent, so that even if the water level outside the waterstop structure suddenly rises, it is possible to reliably store water and liquid inside the waterstop body.

The invention described in claim 16 has the effect of any of the inventions described in claims 10 to 14, and can switch between a state in which water flowing in through the water passage opening can be introduced into the waterstop body, and a state in which liquid can be injected through the air vent and stored, so that even if the water level outside the waterstop structure rises suddenly, water and liquid can be reliably stored inside the waterstop body.

The invention described in claim 17 has the effect of any of the inventions described in claims 10 to 16, and in addition, when external water pressure is applied to the waterstop body, the support plate functions as a reinforcing plate, improving the strength of the waterstop structure.

1 is a schematic perspective view showing an installed state of a waterstop structure according to a first embodiment of the present invention; 2 is a schematic cross-sectional view of the waterstop structure shown in FIG. 1 along line II-II. 3 is a schematic cross-sectional view of the waterstop structure shown in FIG. 1 along line III-III. FIG. 5 is a schematic cross-sectional view showing an installation state of a waterstop structure according to a second embodiment of the present invention, and corresponds to FIG. 3 . FIG. 11 is a schematic cross-sectional view showing an installation state of a waterstop structure according to a third embodiment of the present invention, and corresponds to FIG. A schematic front view showing the installed state of a waterstop structure according to a fourth embodiment of the present invention. 7 is a schematic cross-sectional view of the waterstop structure shown in FIG. 6 along line VII-VII. FIG. 13 is a schematic cross-sectional view showing an installation state of a waterstop structure according to a fifth embodiment of the present invention, and corresponds to FIG. 3 . 9 is a schematic cross-sectional view of the waterstop structure shown in FIG. 8 along line IX-IX, and corresponds to FIG. 7. FIG. 13 is a schematic perspective view showing an installation state of a waterstop structure according to a sixth embodiment of the present invention, and corresponds to FIG. 11 is a schematic cross-sectional view of the waterstop structure shown in FIG. 10 along line XI-XI, and corresponds to FIG. 3. FIG. 12 is a schematic cross-sectional view showing the installed state of a waterstop structure according to a seventh embodiment of the present invention, and corresponds to FIG. 11 . FIG. 12 is a schematic cross-sectional view showing the installation state of a waterstop structure according to an eighth embodiment of the present invention, and corresponds to FIG. 11 . FIG. 13 is a schematic cross-sectional view showing the installation state of a waterstop structure according to a ninth embodiment of the present invention, and corresponds to FIG. 11 . FIG. 14 is a schematic cross-sectional view showing the installation state of a waterstop structure according to the tenth embodiment of the present invention, and corresponds to FIG. 11. 11 is a schematic cross-sectional view showing the installation state of a waterstop structure according to an eleventh embodiment of the present invention, and corresponds to FIG. 11. FIG.

Figure 1 is a schematic perspective view showing the installation state of a waterstop structure according to a first embodiment of the present invention, and Figure 2 is a schematic cross-sectional view of the waterstop structure shown in Figure 1 along line II-II.

With reference to these figures, the waterstop structure 1 is attached to a pair of structures installed at a predetermined interval, such as a pair of wall surfaces 3 forming a frontage 2, and a floor surface 4. Specifically, first, with the side seen from the arrow direction in FIG. 1 as the front, a pair of mounting members 5a and 5b, which are a pair of frame members having a roughly U-shape in plan view and made of a watertight material such as metal, are attached watertightly to the front side of the wall surface 3 in a vertical direction from the floor surface 4 by means of fixing brackets (not shown). In addition, in the installed state, the mounting members 5a and 5b are also watertight with the floor surface 4. Furthermore, a rectangular waterstop 6 made of a watertight material such as aluminum is attached to the inner part of the U-shape of the mounting members 5a and 5b. The waterstop 6 is inserted into the mounting members 5a and 5b from above, and then attached by a plurality of fixing members 13 made of screws or the like so that the back side of the waterstop 6 is in close contact with the mounting members 5a and 5b. In order to ensure watertightness between the waterstop 6 and the mounting members 5a and 5b, a waterstop material made of rubber or the like (not shown) is also attached between the back side of the waterstop 6 and the mounting members 5a and 5b (corresponding to the portion 14 between the waterstop 6 and the mounting member 5a in FIG. 2). In this way, the waterstop 6 is installed in a watertight state on the wall surface 3 via the mounting member 5. The effect of this configuration will be described later.

Next, we will explain the specific configuration of the waterstop 6 of the waterstop structure 1.

Figure 3 is a schematic cross-sectional view of the III-III line of the waterstop structure shown in Figure 1.

1 to 3, the water stop 6 is attached to the floor surface 4 and includes a solid structure 19 having a solid structure, and a hollow structure 15 having a hollow structure provided above the solid structure 19. The solid structure 19 is entirely made of aluminum, and has a larger specific gravity than water (when the specific gravity of water is 1, the specific gravity of aluminum is about 2.7). An opening 16 is provided above the hollow structure 15, and as shown by the arrow R, liquid 8 such as water can be injected into the space 17 inside the hollow structure of the hollow structure 15 through the opening 16. This water can be external water such as rainwater, or tap water can be injected using a hose or the like. Furthermore, a drain port 18 with a removable cap or the like attached is provided at the lower right of the front side of the hollow structure 15 of the water stop 6. Liquid 8 stored in the space 17 inside the hollow structure of the hollow structure 15 can be discharged through the drain port 18. The effects of these configurations will be described later.

When there is no water outside, the waterstop structure 1 constructed in this way is simply installed and in a non-waterstop state, but when the water level outside the waterstop structure 1 actually rises, it enters a waterstop state, blocking water entering from the outside.

Next, the relationship between the waterstop structure 1 and the external water in the waterstop state of this embodiment will be described below.

First, it is assumed that the water outside the waterstop structure 1 of this embodiment has a composition almost the same as that of fresh water and a specific gravity of 1. Then, when the water outside the waterstop structure 1 rises to a position _H1 where the solid structural portion 19 of the waterstop 6 is immersed in water, since the solid structural portion 19 is made of aluminum, which has a higher specific gravity than the outside water as described above, the relationship of forces relating to the floating and sinking of the water outside the waterstop 6 and the waterstop 6 is such that the force trying to float the waterstop 6 is less than the force trying to sink the waterstop 6. Then, the waterstop 6 becomes difficult to float up.

Next, when the water level rises to position _H2 where part of the hollow structure 15 is submerged in water, the presence of space 17 inside the hollow structure of the hollow structure 15 makes the weight of the waterstop 6 lighter than the weight of a waterstop that is made of the same material and has the same shape as the waterstop 6 and has a solid structure as a whole. As a result, if the relationship between the forces related to the floating and sinking of the waterstop 6 and the water outside the waterstop 6 becomes such that the force trying to float the waterstop 6 is greater than or equal to the force trying to sink the waterstop 6, there is a risk that the waterstop 6 will float up. In order to prevent this floating up, as shown by arrow R, liquid 8 is injected into the internal space 17 of the hollow structure of hollow structure 15 from opening 16 provided in hollow structure 15 of waterstop 6, and the weight of hollow structure 15 is increased by the amount of injected liquid 8 so that the relationship of forces relating to the floating and sinking of waterstop 6 and the water outside waterstop 6 remains as force trying to float waterstop 6 < force trying to sink waterstop 6. This increases the weight of the entire waterstop 6, making it possible to prevent waterstop 6 of waterstop structure 1 from floating up.

In this way, when no liquid is injected into the hollow structure 15 of the waterstop 6, the waterstop 6 is lighter than a waterstop made entirely of a solid structure, and the waterstop 6 remains easy to handle in the non-waterstop state. In addition, when liquid 8 is injected into the hollow structure 15 of the waterstop 6, the weight of the entire waterstop 6 can be increased by the amount of the injected liquid 8, so that in the waterstop state, the waterstop 6 can quickly obtain a weight appropriate for waterstopping according to the type of water outside and the water level, thereby preventing the waterstop 6 from floating up.

In addition, since the water stop 6 is attached via the mounting members 5a and 5b, the water stop 6 can be securely attached to the wall surface 3, making the installation state of the water stop structure 1 more stable.

Furthermore, since the solid structural portion 15 of the waterstop 6 is made of a material with a higher specific gravity than the external water, the waterstop 6 is less likely to float up in the water when in a watertight state, further improving the watertightness of the waterstop 6.

Furthermore, the water stop 6 is less likely to float up in the water, and the force of the water stop 6 pulling the fixing member 13 upwards is less likely to be applied when the water is stopped, reducing the load on the fixing member 13.

The waterstop structure 1 used in this way will be removed after the water has receded. At this time, the cap on the drain outlet 18 is removed and the drain outlet 18 is left open, allowing the liquid 8 stored in the internal space 17 of the hollow structure of the hollow structure portion 15 to be easily drained through the drain outlet 18. This allows the weight of the waterstop 6 to be easily restored to approximately the same weight as before use, facilitating the removal of the waterstop 6 from the waterstop structure 1 that has been used.

Figure 4 is a schematic cross-sectional view showing the installation state of a waterstop structure according to a second embodiment of the present invention, and corresponds to Figure 3.

The configuration of the waterstop structure 21 in this embodiment is basically the same as in the first embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 4, the waterstop 26 of the waterstop structure 21 has a plurality of water-passing openings 33a-33f provided in the height direction of the waterstop 26 on the left and right side portions 32 of the hollow structure 35. Water can pass between the internal space 37 of the hollow structure 35 and the external space through these water-passing openings 33a-33f. In addition, on the internal space 37 side of the hollow structure 35 of the water-passing openings 33a-33f, inflow and outflow control means consisting of one-sided lid members 34a-34f attached by hinges 38a-38f or the like is provided. These lid members 34a-34f are structured to be pushed open inward by the flow of water or water pressure outside the waterstop structure 21, allowing water to flow in from the outside of the hollow structure through the water-passing openings 33a-33f, while preventing water from flowing out from the inside of the hollow structure.

In such a waterstop structure 21, when the water level outside the waterstop structure 21 rises to _H3 , where the water passage openings 33a and 33b are immersed, the lid members 34a and 34b are pushed inward by the water flow from the outside, and water flows into the space 37 inside the hollow structure of the hollow structure 35, as shown by arrow _R1 . If it is desired to further increase the weight of the waterstop 26, liquid may be injected from the opening 36 provided in the upper part of the hollow structure 35, as shown by arrow _R2 . In that case, the water flowing into the space 37 inside the hollow structure of the hollow structure 35 and the water pressure from the injected liquid cause the lid members 34a to 34f to close the water passage openings 33a to 33f, thereby preventing the water and liquid stored in the space 37 inside the hollow structure from flowing out to the outside.

In this way, water flowing in through the water passages 33a to 33f can be introduced into the hollow structure 35, and additional liquid can be injected and stored through the opening 36. This makes it possible to reliably store water and liquid inside the hollow structure 37 of the hollow structure 35 of the waterstop 26, even if the water level outside the waterstop structure 21 rises suddenly.

Figure 5 is a schematic cross-sectional view showing the installation state of a waterstop structure according to a third embodiment of the present invention, and corresponds to Figure 3.

The configuration of the waterstop structure 41 in this embodiment is basically the same as in the second embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 5, the water stop plate 46 of the water stop plate structure 41 is provided with a pair of detachable plate members 44a and 44b for preventing outflow, instead of the inflow and outflow restricting means made of the lid members 34a to 34f of the second embodiment, on the inside of the hollow structure of the hollow structure 45. The plate members 44a and 44b are attached so as to cover the water passage openings 43a to 43f by inserting them in the direction indicated by the arrow IN. When the attached plate members 44a and 44b are to be removed, they are pulled out in the direction opposite to the arrow IN. When removed, the plate members 44a and 44b allow water to pass between the internal space 47 of the hollow structure of the hollow structure 45 and the external space through the water passage openings 43a to 43f, while when attached, they prevent water from flowing out from the inside of the hollow structure of the hollow structure 45 and water from flowing in from the outside through the water passage openings 43a to 43f.

In such a waterstop structure 41, when the water level outside the waterstop structure 41 rises to a position _H3 where the water passages 43a and 43b are immersed, water flows into the space 47 inside the hollow structure of the hollow structure 45 as shown by the arrow R1. If it is desired to further increase the weight of the waterstop 46, after attaching the plates 44a and 44b, liquid may be poured from the opening 48 provided in the upper part of the hollow structure 45 as shown by the arrow R2. It is possible to allow water to flow in from the water passages 43a and 43b, or it is also possible to attach the plates 44a and 44b and pour liquid to any height through the opening 48.

In this way, it is possible to switch between a state in which water entering through the water passages 43a to 43f can be introduced into the hollow structure 45 and a state in which liquid can be injected and stored through the opening 48, so that even if the water level outside the waterstop structure 41 suddenly rises, water and liquid can be reliably stored in the space 47 inside the hollow structure of the hollow structure 45 of the waterstop 46.

Figure 6 is a schematic front view showing the installation state of a waterstop structure according to a fourth embodiment of the present invention, and Figure 7 is a schematic cross-sectional view of the waterstop structure shown in Figure 6 along line VII-VII.

The configuration of the waterstop structure 51 in this embodiment is basically the same as in the first embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to Figures 6 and 7, the hollow structure 55 of the waterstop 56 of the waterstop structure 51 has support plates 53a to 53c arranged at a predetermined interval in the space 57 inside the hollow structure. These support plates 53a to 53c are rectangular plates, and in the space 57 inside the hollow structure of the hollow structure 55, a space is provided in the height direction and the support plates are attached so as to be in contact with the front side and the back side.

In other words, the hollow structure portion 55 of the waterstop 56 of the waterstop structure 51 has support plates 53a to 53c that divide a portion of the space 57 inside the hollow structure and have a shape that allows the divided spaces to communicate with each other.

In such a waterstop structure 51, let us assume that the water level outside the waterstop structure 51 rises to position _H4 where the hollow structure is submerged. Then, water pressure is applied to the hollow structure 55 of the waterstop 56 from the front side (the side indicated by the arrow in FIG. 7), and a force is applied that causes the front side of the hollow structure 55 of the waterstop 56 to bend toward the rear side. However, at that time, the support plates 53a to 53b function as reinforcing plates, making it difficult for the front side of the hollow structure 55 of the waterstop 56 to bend toward the rear side, and the strength of the waterstop 56 of the waterstop structure 51 is improved.

Figure 8 is a schematic cross-sectional view showing the installation state of a waterstop structure according to a fifth embodiment of the present invention, and corresponds to Figure 3.

The configuration of the waterstop structure 61 in this embodiment is basically the same as in the first embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 8, the waterstop 66 of the waterstop structure 61 is formed by stacking a number of tubular members 71a-71c, each of which has a hollow structure 75 that extends in the longitudinal direction and has internal spaces 77a-77c, in the height direction. Each of the tubular members 71a-71c is detachably fixed above the solid structure 95 by connecting fittings 72a-72f, which are made up of an I-shaped fitting and a screw.

By doing this, it becomes possible to separate the hollow structural portion 75 of the waterstop 66 into the solid structural portion 79 and the tubular members 71a to 71c, allowing the waterstop 66 of the waterstop structure 61 to be stored compactly and to be easily transported.

Each of the cylindrical members 71a to 71c has communication ports 73a to 73d that communicate with the internal spaces 77a to 77c of the cylindrical members (here, referring to the combination of cylindrical members 71a and 71b, and cylindrical members 71b and 71c) that are in contact with each other. The uppermost cylindrical member 71c has an opening 76 through which water can be injected, and as shown by the arrow R, liquid 8 injected through the opening 76 moves between the cylindrical members 71a to 71c through the communication ports 73a to 73d and can be stored in the internal spaces 77a to 77c of the cylindrical members 71a to 71c.

This makes it possible to reliably inject the liquid 8 into the spaces 77a-77c inside the tubular members 71a-71c of the waterstop 66, preventing the waterstop 66 from floating up and stabilizing the waterstop performance of the waterstop structure 61.

Figure 9 is a schematic cross-sectional view of the waterstop structure shown in Figure 8 along line IX-IX, and corresponds to Figure 7.

Referring to FIG. 9 in addition to FIG. 8, the waterstop 66 of the waterstop structure 61 has shielding members 78 made of a watertight material such as rubber attached to the back side of the hollow structural portion 75 and to the back and bottom sides of the solid structural portion 79.

Here, suppose that the water level outside the waterstop structure 61 rises to a position _H5 where part of the tubular member 71c is submerged. Then, depending on the mounting state of the tubular members 71a to 71c, water outside the waterstop structure 61 may infiltrate through the gaps between the solid structure 79 of the waterstop 66 and each of the tubular members 71a to 71c by capillary action, as indicated by the right-pointing arrow. However, the infiltrating water is blocked by the shielding member 78, and the blocked water travels downward between the hollow structure 75, the back side of the solid structure 79, and the shielding member 78, as indicated by the downward arrow, and then travels between the bottom side of the solid structure 79 and the shielding member 78, and is discharged to the front side of the waterstop 66, as indicated by the left-pointing arrow. In other words, water that has infiltrated between the solid structural portion 79 and the tubular members 71a to 71c can be prevented from being discharged toward the structure, and the infiltrating water can be discharged through the gap between the solid structural portion 79 and the shielding member 78, thereby further improving the water stopping properties of the waterstop structure 61.

Figure 10 is a schematic perspective view showing the installation state of a waterstop structure according to a sixth embodiment of the present invention, and corresponds to Figure 1. Figure 11 is a schematic cross-sectional view of the waterstop structure shown in Figure 10 along line XI-XI, and corresponds to Figure 3.

The waterstop structure 81 according to this embodiment includes a pair of mounting members 85a, 85b that are attached watertightly vertically from the floor surface 4 to each of a pair of structures installed at a predetermined distance, such as a pair of walls 3 that form the frontage 2, and a waterstop body 86 (corresponding to the waterstops in the first to fifth embodiments) that is watertight and has a space 87 inside.

The configuration of the mounting members 85a, 85b of the waterstop structure 81 in this embodiment and the method of installing the waterstop structure 81 are basically the same as in the first embodiment, so we will not repeat the explanation here and will focus on the differences.

10 and 11, the waterstop body 86 of the waterstop structure 81 is provided with water passage holes 83a, 83b at the bottom of each of the left and right side sections 82, with the side viewed from the direction of the arrow in FIG. 10 being the front, allowing water to pass between the internal space 87 of the waterstop body 86 and the external space. Also, an air vent 88 is provided at the top (flat surface section 84) of the waterstop body 86, allowing gas to pass between the internal space 87 of the waterstop body 86 and the external space.

When the water level outside the waterstop structure 81 including the waterstop body 86 configured in this manner rises to a position _H6 that covers the water passage of the waterstop body 86, water will flow into the waterstop body 86 from the outside through the water passages 83a and 83b, as indicated by the arrow R. At that time, air that has accumulated in the space 87 inside the waterstop body 86 is discharged not only through the vent 88 but also through the gaps between the water passages 83a and 83b and the water. Next, when the water level rises to a position _H7 where the water passage is completely immersed in water, the water passages 83a and 83b are completely immersed in water, making it difficult to discharge the air that has accumulated in the space 87 inside the waterstop body 86 through the water passages 83a and 83b. However, air continues to be discharged from the vent 88 as indicated by the arrow A, so water can flow into the space 87 inside the waterstop body 86 from the outside more quickly and reliably than in the case where there is no vent 88.

The weight of the waterstop body 86 then increases by the amount of water that has flowed in. As a result, the force relationship between the water outside the waterstop body 86 and the waterstop body 86 as it floats and sinks tends to be such that the force trying to make the waterstop body 86 float is less than the force trying to make the waterstop body 86 sink, preventing the waterstop body 86 of the waterstop structure 81 from floating up.

In this way, when no liquid is injected into the internal space 87 of the waterstop body 86, the waterstop body 86 is lighter than a waterstop made entirely of a solid structure, so that the waterstop body 86 remains easy to handle in the non-waterstop state. Also, when water flows into the internal space 87 of the waterstop body 86 from the outside, the air in the internal space 87 of the waterstop body 86 is exhausted through the ventilation hole 88, and water can flow into the internal space 87 of the waterstop body 86 more quickly than when there is no ventilation hole 88. Therefore, in the waterstop state, the waterstop body 86 can quickly obtain a weight appropriate for waterstopping according to the type of water outside, the water level, and other conditions, and the waterstop body 86 can be prevented from floating up.

Figure 12 is a schematic cross-sectional view showing the installation state of a waterstop structure according to the seventh embodiment of the present invention, and corresponds to Figure 11.

The configuration of the waterstop structure 91 in this embodiment is basically the same as in the sixth embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 12, the waterstop body 96 of the waterstop structure 91 has multiple water passage openings 93a to 93f provided in the height direction.

In such a waterstop structure 91, when the water level outside the waterstop structure 91 is at a position _H8 covering the water passage openings 93a, 93b of the waterstop body 96, water flows from the outside into the space 97 inside the waterstop body 96 through the water passage openings 93a, 93b, as indicated by arrow _R1 . Furthermore, when the water level rises to _H9 , which is above the water passage openings 93c, 93d, water also flows into the space 97 inside the waterstop body 96 from the water passage openings 93c, 93d, as indicated by arrow _R2 . Note that water passage openings in positions where water does not flow in function as air vents.

In this way, when the water level outside the waterstop body 96 of the waterstop structure 91 rises, water can flow into the space 97 inside the waterstop body 96 from the water passages 93a to 93f at the corresponding height, improving the efficiency with which water flows into the space 97 inside the waterstop body 96.

Figure 13 is a schematic cross-sectional view showing the installation state of a waterstop structure according to an eighth embodiment of the present invention, and corresponds to Figure 11.

The configuration of the waterstop structure 101 in this embodiment is basically the same as in the seventh embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 13, the waterstop body 106 of the waterstop structure 101 is provided with an inflow/outflow control means consisting of single-opening lid members 104a-104f attached to the water passage openings 103a-103f in the internal space 107 of the waterstop body 106 by hinges 108a-108f or the like similar to those described in the second embodiment. As described in the second embodiment, these lid members 104a-104f are structured to be pushed open inward by the water flow or water pressure outside the waterstop structure 101, allowing water to flow from the outside of the waterstop body 106 into the internal space 107 of the waterstop body 106 through the water passage openings 103a-103f, while preventing water from flowing out from the internal space 107 of the waterstop body 106 to the outside of the waterstop body 106.

In such a waterstop structure 101, when the water level outside the waterstop structure 101 rises to a position _H10 that covers the water passage ports 103a and 103b of the waterstop body 106, the water flows into the space 107 inside the waterstop body 106 through the water passage ports 103a and 103b as shown by the arrow _R1 . At that time, the air inside the waterstop body 106 is discharged through the vent 109 as shown by the arrow A, so that the water can flow quickly and reliably into the space 107 inside the waterstop body 106. Furthermore, if it is desired to increase the weight of the waterstop body 106, the vent 109 of the waterstop body 106 can be used as an injection port to inject liquid as shown by the arrow _R2 .

This allows the water flowing in through the water passages 103a-103f to be introduced into the space 107 inside the waterstop body 106, and also allows additional liquid to be injected and stored through the air vent 109, making it possible to reliably store water and liquid in the space 107 inside the waterstop body 106 even if the water level outside the waterstop structure 101 suddenly rises.

Figure 14 is a schematic cross-sectional view showing the installation state of a waterstop structure according to a ninth embodiment of the present invention, and corresponds to Figure 11.

The configuration of the waterstop structure 111 in this embodiment is basically the same as in the seventh embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 14, the waterstop body 116 of the waterstop structure 111 has a pair of plate members 114a, 114b similar to those described in the third embodiment that are detachably provided in the internal space 117 of the waterstop body 116 to cover the water passage openings 113a to 113f.

As described in the third embodiment, when removed, the plates 114a and 114b allow water to pass through the internal space 117 of the waterstop body 116 and the external space via the water passages 113a to 113f, while when attached, they prevent water from flowing out of the internal space 117 of the waterstop body 116 and water from the outside via the water passages 113a to 113f.

In such a waterstop structure 111, when the water level outside the waterstop structure 111 rises to a position _H10 that covers the water passage holes 113a, 113b of the waterstop body 116, water flows into the space 117 inside the waterstop body 116 as shown by the arrow _R1 . If it is desired to further increase the weight of the waterstop body 116, liquid can be injected using the vent hole 118 as shown by the arrow _R2 after the plates 114a, 114b are attached.

This allows switching between a state in which water flowing in through the water passages 113a to 113f can be introduced into the space 117 inside the waterstop body 116 and a state in which liquid can be injected through the air vent 118 and stored, so that even if the water level outside the waterstop structure 111 suddenly rises, water and liquid can be reliably stored in the space 117 inside the waterstop body 116.

Figure 15 is a schematic cross-sectional view showing the installation state of a waterstop structure according to a tenth embodiment of the present invention, and corresponds to Figure 11.

The configuration of the waterstop structure 121 in this embodiment is basically the same as in the sixth embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 15, the waterstop body 126 of the waterstop structure 121 has support plates 124a to 124c similar to those in the fourth embodiment provided in the internal space 127 of the waterstop body 126.

In this way, when external water pressure is applied to the waterstop body 126, the support plates 124a to 124c function as reinforcing plates, improving the strength of the waterstop structure 121.

Figure 16 is a schematic cross-sectional view showing the installation state of a waterstop structure according to an eleventh embodiment of the present invention, and corresponds to Figure 11.

The configuration of the waterstop structure 131 in this embodiment is basically the same as in the sixth embodiment, so we will not repeat the explanation here and will focus on the differences.

Referring to FIG. 16, the waterstop body 136 of the waterstop structure 131 is formed by stacking a number of tubular members 141a-141c, each of which extends in the longitudinal direction and has a space inside, in the height direction, like the hollow structure 75 of the fifth embodiment. The longitudinal ends of the tubular members 141a-141c are open and have water passages 143a-143f. The effect of this configuration will be described later. Each of the tubular members 141a-141c is detachably fixed by connecting fittings 142a-142d, which are made of U-shaped metal fittings and screws.

This makes it possible to separate the waterstop body 136 into each of the cylindrical members 141a to 141c, allowing the waterstop body 136 of the waterstop structure 131 to be stored compactly and making it easy to transport.

Furthermore, each of the cylindrical members 141a to 141c has communication openings 145a to 145d that connect the internal spaces of the cylindrical members that are in contact with each other, and also communicate with the ventilation opening 146.

When the water level outside the waterstop structure 131 rises to a position _H11 that covers about half the height of the tubular member 141b, water flows from the outside of the waterstop structure 131 into the spaces 147, 147c inside the tubular members 141, 141b through the water-passing ports 143a-143d of the waterstop body 136, as shown by the arrow R. At that time, air that has accumulated in the spaces 147a-147c inside the tubular members 141a-141c rises through the communication ports 145a-145d and is discharged through the ventilation port 146, as shown by the arrow A. In addition, parts of the water-passing ports 143c, 143d that are not covered with water and 143e, 143f also function as ventilation ports. In addition, the water that has flowed in moves between the tubular members 141a-141c through the communication ports 145a-145d depending on the rise and fall of the water level. In this way, air inside the tubular members 141a to 141c and water flowing in from the outside can be moved through the communication ports 145a to 145d, making it easier for water to flow in from the outside of the waterstop structure 131.

Furthermore, although not shown in the figures, a shielding member 148 made of a watertight material such as rubber, similar to that described in the fifth embodiment, is attached to the back and bottom sides of the waterstop body 136.

Although not shown, this shielding member 148 can block water that infiltrates between the cylindrical members 141a to 141c due to capillary action, as described in the fifth embodiment. In addition, the blocked water moves downward between the back side of the cylindrical members 141a to 141c and the shielding member 148, and can be discharged to the front side of the waterstop body 136 by running between the bottom side of the cylindrical member 141a and the shielding member 148. In other words, water that has infiltrated between the cylindrical members 141a to 141c can be prevented from being discharged to the structure side, and the infiltrating water can be discharged through the gap between the cylindrical member 141c and the shielding member 148, thereby further improving the waterstopping ability of the waterstop structure 131.

In the first to fifth embodiments, the water stop is made of aluminum, which has a higher specific gravity, on the assumption that the specific gravity of the water outside is 1. However, the water outside may be various types of water, such as rainwater, river water, and seawater, depending on the situation, and the temperature of the water may vary depending on the season. Therefore, it is preferable to form the solid structure, which is immersed in water first, from a material with a higher specific gravity than the various types of water. In this way, the water stop of the water stop structure is less likely to float up in the water in the water stopping state, improving the water stopping ability. For example, in the first to fifth embodiments, the water stop may be made of other materials, including iron, stainless steel, carbon, synthetic resins such as polycarbonate, synthetic wood, rubberized cloth, etc., as long as they are watertight. In addition, the same materials can be used for the water stop body in the sixth to eleventh embodiments.

In addition, in the first to fifth embodiments described above, the solid structural portion and hollow structural portion of the waterstop are made of the same material (aluminum), but they may be made of different materials.

Furthermore, in the first to fifth embodiments described above, the solid structural portion and the hollow structural portion are constructed from separate members, but this is not limited thereto, and they may be formed integrally.

Furthermore, in the first to fifth embodiments, the solid structure is made of a single material, but this is not limiting, and it may be made of a composite material. Also, if the inside of the solid structure is filled, a space may be provided inside the solid structure and filled with sand, mud, stones, metal pieces, or the like. This is advantageous in terms of cost.

In addition, in the first to fifth embodiments described above, the waterstop structure is attached (detachable) via a mounting member, but any structure can be adopted without being limited to this. For example, the waterstop may be installed directly on the structure and floor by adopting an opening/closing structure like a door or a sliding structure like a sliding door. Also, since the waterstop has a solid structural portion and is heavier and more stable than a waterstop with a hollow structure overall, it may be placed directly on the floor as long as it has a certain thickness.

In addition, in each of the above embodiments, the mounting member for the waterstop structure is a frame that is U-shaped in plan view, but it may be of another shape. For example, the waterstop or the waterstop body may have legs that extend to the front side at the bottom, or a rail-shaped groove may be provided on the floor surface and the waterstop may be fitted into the groove.

In addition, in each of the above embodiments, the water stop and the water stop body are rectangular, but they may have other shapes. For example, they may be trapezoidal, flaring downward.

Furthermore, in each of the above embodiments, any watertight structure may be adopted for the wall surface, floor surface, mounting member, and each mounting portion of the waterstop or waterstop body.

Furthermore, in the first to fifth embodiments described above, the opening in the water stop plate is provided so that the upper part of the hollow structure is almost open, but this is not limited to this. As long as liquid can be poured into the opening, it is also possible to provide holes of other shapes, such as round, square, or elliptical.

In addition, in the first to fifth embodiments, the opening of the waterstop is provided at the top of the hollow structure, but this is not limited to this. For ease of injecting water, it is preferable to provide it higher up, but it may be provided at any location as long as the structure allows liquid to be injected into the hollow structure.

In addition, in the first to fifth embodiments described above, a drain outlet is provided in the hollow structural portion of the waterstop plate, but this is not limited thereto, and a drain outlet may be provided in the solid structural portion, and the drain outlet, hollow structural portion, and water passage may be provided in the solid structural portion. Also, a drain outlet may not be provided.

Furthermore, although not described in the first to fifth embodiments above, the shape of the drain outlet can be any shape, such as round, oval, or square.

Furthermore, although not described in the second, third, and sixth to eleventh embodiments above, the shape of the water passage port can be any shape, such as round, elliptical, or rectangular.

Furthermore, in the second, third and sixth to eleventh embodiments described above, a specific number of water passage holes are provided in the waterstop plate or the waterstop plate body, but this is not limited to this, and any number of water passage holes may be provided as long as there is at least one.

Furthermore, in the second, third and sixth to eleventh embodiments, the water passage openings are provided on the left and right side portions of the waterstop plate or the waterstop plate body, but this is not limited thereto and they may be provided on the front side. In this case, multiple water passage openings may be provided in the horizontal direction.

In addition, in the second and eighth embodiments, a hinged single-sided lid is used as the inflow and outflow control means, but this is not limited to this. Other means such as a check valve may be used as long as it allows water to flow in from the outside of the waterstop or waterstop body and prevents water from flowing out from the inside.

Furthermore, in the third and ninth embodiments, a plate material is used as the inflow/outflow prevention means, but this is not limited to this. Other means, such as a cap that matches the shape of the water passage opening, may be used as long as it is detachable and prevents water from flowing in and out between the outside and inside of the waterstop or the waterstop body.

Furthermore, in the fourth and tenth embodiments described above, three support plates are provided vertically in the hollow space, but it is sufficient that at least one support plate is provided. It may also be provided horizontally.

Furthermore, although not described in the fourth and tenth embodiments above, the support plate may be configured to be provided in the internal space of the waterstop plate and waterstop plate body of the other embodiments above. Also, when provided in the internal space of the tubular members in the fifth and eleventh embodiments, it is sufficient to attach the support plate with spaces left open at the top and bottom of each tubular member.

Furthermore, in the fifth and eleventh embodiments described above, the waterstop or waterstop body is formed by stacking three tubular members, but this is not limited to this, and any number of tubular members may be selected as long as it is two or more.

In addition, in the fifth and eleventh embodiments, the cylindrical member is attached using a connecting metal fitting of a specific shape, but this is not limited to this. Other means such as hook-and-loop fasteners can be used as long as they can be attached detachably.

Furthermore, in the fifth embodiment described above, both ends of the cylindrical member in the longitudinal direction are closed, but in addition to the water passage as described in the second and third embodiments, it may be configured to have an inflow/outflow restriction means or an inflow/outflow prevention means.

Furthermore, in the fifth embodiment described above, all of the cylindrical members have an internal space, but this is not limited thereto, and the cylindrical member attached to the lowest part may have a solid structure.

In addition, in the eleventh embodiment, the tubular member has a water passage opening so that both ends in the longitudinal direction are entirely open, but this is not limited thereto, and the water passage opening may be formed as described in the sixth embodiment. Furthermore, the water passage opening may be provided with an inflow/outflow restriction means or an inflow/outflow prevention means as described in the eighth and ninth embodiments.

Furthermore, in the above eleventh embodiment, all of the cylindrical members are configured to have water passages, but this is not limited thereto. As long as water passages are provided in at least the cylindrical member located at the bottom, they do not need to be provided in the other cylindrical members.

Furthermore, in the fifth and eleventh embodiments described above, the communication openings are provided in a straight line near the center of each of the cylindrical members, but this is not limited thereto, and as long as the positions of the communication openings of adjacent cylindrical members correspond to each other, the positions of the communication openings of distant cylindrical members may be different.

Furthermore, although not described in the fifth and eleventh embodiments above, the shape of the communication opening can be any shape, such as a circle, an oval, or a square.

Furthermore, in the fifth and eleventh embodiments described above, the shielding member is provided on both the back side and the bottom side of the waterstop or the waterstop body, but it is sufficient that it is provided at least on the back side.

Furthermore, although not described in the sixth to eleventh embodiments above, the shape of the vent can be any shape, such as a circle, an oval, or a square. Also, as in the first to fourth embodiments, the vent may be shaped so that the entire top is open.

1, 21, 41, 51, 61, 81, 91, 101, 111, 121, 131...Waterstop structure 2...Frontage 3...Wall surface 4...Floor surface 5a, 5b, 25a, 25b, 65a, 65b, 85a, 85b, 135a, 135b...Mounting member 6, 26, 46, 56, 66...Waterstop 8...Liquid 15, 35, 45, 55, 75...Hollow structure portion 16, 36, 48, 76...Opening 17, 37, 47, 57...Space inside hollow structure 18...Drain port 19, 39, 79...Solid structure portion 33a to 33f, 43a to 43f, 83a, 83b, 93a to 93f, 103a to 103f, 113a to 113f, 143a to 143f... Water passage port 34a to 34f, 104a to 104f... Cover material 38a to 38f, 108a to 108f... Hinge 44a, 44b, 114a, 114b... Plate material 53a, 53b, 53c, 124a, 124b, 124c... Support plate 71a, 71b, 71c, 141a, 141b, 141c... Cylindrical member 73a to 73d, 145a to 145d... Communication port 77a, 77b, 77c, 147a, 147b, 147c...space inside cylindrical member 78, 148...shielding member 86, 96, 106, 116, 126, 136...waterstop main body 87, 97, 107, 117...space inside waterstop main body 88, 98, 109, 118, 146...ventilation holes.In addition, the same symbols in each drawing indicate the same or corresponding parts.

Claims (17)

A watertight waterstop plate that is installed in a watertight state on a pair of structures and a floor surface that are installed at a predetermined interval,
A solid structural part attached on the floor surface and having a solid structure;
a hollow structure portion provided above the solid structure portion, having a hollow structure, and having an opening through which a liquid can be injected into an internal space of the hollow structure ;
The solid structural portion is a waterstop having a specific gravity greater than that of water . The waterstop of claim 1, wherein the solid structural portion is formed from a material having a specific gravity greater than that of water. The waterstop plate according to claim 1 or 2, wherein the hollow structure is formed by connecting a plurality of tubular members that extend in the longitudinal direction and have an internal space so as to be freely attached and detached in the height direction, and each of the plurality of tubular members has a communication port that connects the spaces of the tubular members that are in contact with each other. The waterstop plate according to claim 3, wherein the solid structural portion and the hollow structural portion are provided with a watertight shielding member in the portion that is located on the side of the structure when installed. The waterstop plate according to any one of claims 1 to 4, wherein the hollow structure has at least one water passage opening through which water can pass to the inside and outside of the hollow structure, and an inflow/outflow control means that allows water to flow in from the outside of the hollow structure through the water passage opening while preventing water from flowing out from the inside of the hollow structure. The waterstop plate according to any one of claims 1 to 4, wherein the hollow structure has at least one water passage opening that allows water to pass between the inside and outside of the hollow structure, and a removable inflow/outflow prevention means that prevents water from entering the hollow structure from the outside and water from exiting the hollow structure from the inside through the water passage opening. The waterstop plate according to any one of claims 1 to 6, wherein the hollow structure has a support plate that divides a part of the space inside the hollow structure and has a shape that allows the divided spaces to communicate with each other. The waterstop according to any one of claims 1 to 7, wherein the hollow structure has an outlet for discharging water accumulated inside the hollow structure. A waterstop structure attached to a pair of structures installed at a predetermined interval,
A pair of mounting members are attached to each of the structures in a watertight manner in a vertical direction from the floor surface;
A waterstop structure comprising: a waterstop according to any one of claims 1 to 8, which is installed in a watertight state on each of the structures via the mounting member. A waterstop structure attached to a pair of structures installed at a predetermined interval,
A pair of mounting members are attached to each of the structures in a watertight manner in a vertical direction from the floor surface;
A waterstop body having watertightness and an internal space;
The waterstop body has at least one water passage hole at its lower part which allows water to pass between the inside and outside of the waterstop body, and an air vent hole at its upper part which allows gas to pass between the inside and outside of the waterstop body. The waterstop structure according to claim 10, wherein the waterstop body has a plurality of water passage openings in the height direction. The waterstop body is formed by connecting a plurality of tubular members that extend in the longitudinal direction and have an internal space so as to be detachable in the height direction, and each of the plurality of tubular members has a communication port that communicates with the spaces of the adjacent tubular members. The waterstop structure according to claim 10 or 11. The waterstop structure according to claim 12, wherein the waterstop body is provided with a watertight shielding member on the portion that is located on the side of the structure when installed. The waterstop structure according to claim 13, wherein the shielding member is arranged to further cover a portion of the waterstop body that is located on the floor surface side when the waterstop body is installed. The waterstop structure according to any one of claims 10 to 14, wherein the waterstop body has an inflow/outflow control means that allows water to flow in from the outside through the water passage hole while preventing water from flowing out from the inside, and water can be injected through the air vent hole. The waterstop structure according to any one of claims 10 to 14, wherein the waterstop body has a removable inflow/outflow prevention means for preventing the inflow of water from the outside through the water passage hole and the outflow of water from the inside, and water can be injected through the air passage hole. The waterstop structure according to any one of claims 10 to 16, wherein the waterstop body further has a support plate having a shape that divides a portion of the internal space and enables the divided spaces to communicate with each other.

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