JP6815702B2 - How to build a building - Google Patents

Description

The present invention relates to a method for constructing a building, in particular, a method for improving the efficiency and shortening of the construction period of the outer wall, performing the construction of the outer wall safely and satisfactorily, and shortening the construction period of the entire building construction.
Regarding.

Conventionally, after attaching an outer wall material such as an ALC (lightweight cellular concrete) plate to a building frame, the outer wall surface of the outer wall material may be painted (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2000-145154 Japanese Patent Application Laid-Open No. 6-272371

However, when painting is applied to the surface to be painted, which is the outer wall surface of the outer wall material after attaching the outer wall material to the building frame at a high place of the building under construction, the outer wall material is used for the installation work and the painting work of the outer wall material. Not only must the external scaffolding be left on the outer wall side of the building for a long period of time, but also the tower crane must be left on for a long period of time in order to dismantle the external scaffolding, resulting in poor work efficiency and construction period. There was a problem that it could not be shortened.
In addition, painting work on an external scaffold also increases the risk of safety.
In addition, especially in the cold season, the worker's senses are paralyzed and good painting work cannot be performed, or the ice and snow sprayed on the outer wall surface of the outer wall material melts and wets the outer wall surface, and then freezes again. The outer wall surface of the siding is in an unfavorable state as a coating base, and there is a problem that good painting work cannot be performed.
The present invention provides a method for constructing a building, which can improve the efficiency of outer wall construction and shorten the construction period, perform the outer wall construction safely and satisfactorily, and shorten the construction period of the entire building construction.

The method for constructing a building according to the present invention includes a first step of constructing a floor portion one floor above the nth floor, leaving a carry-in entrance for carrying the outer wall material into the floor of the nth floor from above, and a tower. Using a crane, a plurality of outer wall materials necessary for constructing the outer wall of the nth floor are carried into the nth floor and carried into the nth floor through the carry-in entrance left on the next floor above the nth floor. The second step of arranging the plurality of outer wall materials on the floor of the nth floor with the surface to be painted of each outer wall material facing upward and in the vicinity of the mounting position of each outer wall material, and the nth floor. After closing the carry-in entrance on the next floor, 3 steps to paint and dry each surface of each outer wall material placed on the floor of the nth floor, and each outer wall material with dried paint are used. In preparation for the 4th step of constructing the outer wall of the nth floor, by repeating the steps from the 1st step to the 4th step, the floors of the nth floor and above are constructed in order, so that the efficiency of the outer wall construction is high. The construction period can be shortened and the construction period of the entire building can be shortened as well as the construction of the outer wall can be carried out safely and satisfactorily.
In addition, after closing the carry-in entrance on the next floor above the nth floor, a tower crane is used on the nth floor until the paint applied to the surface to be painted on the outer wall material dries. Since the pillars on the next floor are built and the beams are connected, the painting work on the floor of the nth floor and the construction work on the next floor above the nth floor can be performed at the same time. It will be possible to shorten the construction period of the entire building construction.
In addition, by installing a deck plate that closes the carry-in entrance and placing concrete on the deck plate to complete the floor one floor above the nth floor, the carry-in entrance on the next floor above the nth floor can be completed. Since it is closed, painting work on the floor of the nth floor and construction work of the next floor above the nth floor can be performed at the same time, and at the same time, it can be moved to the nth floor through the carry-in entrance on the next floor above the nth floor. It becomes possible to prevent the influence on the painting of the outer wall material due to the intrusion of objects and dust, and it becomes possible to form the painted surface of the outer wall material having excellent quality.
In addition, since the work of constructing the outer wall is performed on the floor of the building, it is possible to construct the outer wall by attaching the outer wall material to the mounting position using a lifting machine such as a winch without using a tower crane. The usage period of the crane can be shortened, and the cost and construction period can be reduced. Since the external scaffolding is not required in the painting work of multiple outer wall materials and the work of attaching multiple outer wall materials to the mounting positions to construct the outer wall, the cost and construction period for the installation and dismantling work of the external scaffolding should be reduced. Is possible.
Further, in the second step, when the outer wall materials arranged on the floor are started from one end side located on the outside of the building, the painted surface of the outer wall material is located in the vicinity of the mounting position of the outer wall material. Since each outer wall material is arranged on the floor so as to face outward, it is possible to eliminate the work of changing the orientation of the outer wall material when constructing the outer wall by mounting the outer wall material at the mounting position. The material mounting work can be performed easily and efficiently, and the construction period can be shortened.

The figure which shows the procedure of the building construction method. The figure which shows the procedure of the building construction method. The figure which shows the procedure of the building construction method. The figure which shows the procedure of the building construction method. The figure which shows the procedure of the building construction method. The figure which shows the procedure of the building construction method. The perspective view which shows an example of the outer wall material. The figure which shows a plurality of outer wall materials arranged side by side on the floor. The figure which shows the mounting structure of the outer wall material.

The method of constructing a building according to the embodiment is to carry the outer wall material onto the floor inside the building under construction before mounting the outer wall material at a predetermined mounting position of the building frame at a high place of the building under construction. After the painting work was performed on the surface to be painted, which is the outer wall surface, the building frame was attached to the painted outer wall material.

Hereinafter, the procedure of the building construction method of the embodiment will be described with reference to FIGS. 1 to 9.
First, as shown in FIG. 1, during the daytime hours, steel columns (columns) of the 5th floor portion 10 as the nth floor, which is a high place of the building 1 under construction using the tower crane (building crane) 50, for example. ) 2 will be built and a beam (not shown) will be connected between the steel columns 2 and 2, and the deck plate 3 of the floor portion 19 of the 6th floor portion 20 will be laid. At this time, a carry-in entrance 5 for carrying in the outer wall material 4 from above is left on the floor 9A of the fifth floor portion 10 later. That is, the floor portion 19 on the 6th floor (one floor above the nth floor) is constructed, leaving the carry-in entrance 5 for carrying the outer wall material 4 on the floor on the 5th floor (nth floor) from above.
Then, during the construction period of the construction of the 5th floor portion 10, concrete is cast on the deck plate of the floor portion of the 5th floor portion 10 to construct the floor 9A of the 5th floor portion 10.
Next, using a tower crane 50 that is vacant during the night time when construction work is not performed, the outer wall 4A of the 5th floor portion 10 is passed through the carry-in entrance 5 left in the floor portion 19 of the 6th floor portion (FIG. 4). The plurality of outer wall materials 4, 4 ... Required for constructing (see) are carried into the 5th floor (nth floor), and as shown in FIG. 2, the plurality of outer wall materials 4, 4 ... Are carried into the floor 9A on the 5th floor. Place on top. In this case, as shown in FIG. 8, the plurality of outer wall materials 4, 4 ... Brought in to the 5th floor are placed on the floor 9A on the 5th floor, and the surfaces 4f, 4f ... By arranging the outer wall materials 4, 4 ... In the vicinity of the mounting position of each outer wall material 4, 4 ... to which the outer wall materials 4, 4 ... Are attached, the outer wall materials 4, 4 ... Are placed at a predetermined position on the building frame after the coating is dried. The mounting work to be mounted at the mounting position becomes easy.

As shown in FIG. 2, after arranging a plurality of outer wall materials 4, 4 ... Required for constructing the outer wall 4A of the fifth floor portion 10 on the floor 9A of the fifth floor as described above, the sixth floor portion 20 The carry-in entrance 5 left on the floor portion 19 is closed with the deck plate 3.
Then, after closing the carry-in entrance 5 left on the floor portion 19 of the 6th floor portion, the coating target surfaces 4f, 4f of the outer wall materials 4, 4 ... Arranged on the floor 9A of the 5th floor portion 10 Paint and dry.
Further, after closing the carry-in entrance 5 left on the floor portion 19 of the 6th floor portion 20, the surface 4f, 4f ... Of each outer wall material 4, 4 ... Was applied on the floor 9A on the 5th floor. During the daytime hours until the paint dries, the tower crane 50 is used to build the steel columns 2 on the 6th floor and connect the beams, and the floor on the 7th floor 30. 29 deck plates 3 are laid. At this time, a carry-in entrance 5 for carrying in the outer wall material 4 from above is left on the floor 19A of the 6th floor portion 20 later.
Further, during the construction period of the 6th floor portion 20, concrete is cast on the deck plate 3 of the floor portion 19 of the 6th floor portion 20 to complete the floor 19A of the 6th floor as shown in FIG.
Further, after the coatings of the outer wall materials 4, 4f ... Painted on the floor 9A of the 5th floor portion are dried, as shown in FIG. 3, each outer wall material 4 is placed at a predetermined mounting position of the skeleton of the 5th floor portion 10. , 4f ... Are attached to construct the outer wall 4A of the 5th floor portion 10. That is, the outer wall 4A on the fifth floor is constructed by using the outer wall materials 4, 4f ... With the dried coating.

By repeating the process described above, the fifth and higher floors are constructed in order to construct the building 1.

That is, as shown in FIG. 3, a tower crane 50 that is vacant during the night time when construction work is not performed is used, and the 6th floor portion is passed through the carry-in entrance 5 left in the floor portion 29 of the 7th floor portion 30. A plurality of outer wall materials 4, 4f ... Required for constructing the outer wall 4A of 20 are carried into the 6th floor, and as shown in FIG. 4, the plurality of outer wall materials 4, 4 ... Are placed on the floor 19A of the 6th floor. Deploy. In this case as well, as shown in FIG. 8, the plurality of outer wall materials 4, 4 ... Brought into the 6th floor are placed on the floor 19A on the 6th floor, and the surfaces 4f, 4f ... Is arranged in the vicinity of the mounting position of each outer wall material 4, 4 ... To which the outer wall materials 4, 4 ... Are mounted.
Then, as shown in FIG. 4, a plurality of outer wall materials 4, 4 ... Required for constructing the outer wall 4A of the 6th floor portion 20 are arranged on the floor 19A of the 6th floor, and then the floor portion of the 7th floor portion 30. The carry-in entrance 5 left in 29 is closed with the deck plate 3.
Further, after closing the carry-in entrance 5 left on the floor portion 29 of the 7th floor portion 30, the painting target surfaces 4f, 4f ... Of the outer wall materials 4, 4 ... Arranged on the floor 19A of the 6th floor portion 20 ... Paint and dry.
Further, after closing the carry-in entrance 5 left in the floor portion 29 of the 7th floor portion 20, the surface 4f, 4f ... Of each outer wall material 4, 4 ... Was applied on the floor 19A on the 6th floor. During the daytime hours until the paint dries, the tower crane 50 is used to build the steel columns 2 on the 7th floor and connect the beams, and the floor on the 8th floor 40. 39 deck plates 3 are laid. At this time, a carry-in entrance 5 for carrying in the outer wall material 4 from above is left on the floor 29A of the 7th floor portion 30 later.
Then, during the construction period of the 7th floor portion 30, concrete is cast on the deck plate 3 of the floor portion 29 of the 7th floor portion 30 to complete the floor 29A of the 7th floor portion 30 as shown in FIG.
Further, after the coatings of the outer wall materials 4, 4 ... Painted on the floor 19A of the 6th floor portion 20 are dried, as shown in FIG. 5, the outer wall materials 4, 4 ... Are applied to the skeleton of the 6th floor portion 20. It is attached to construct the outer wall 4A of the 6th floor portion 20.
Then, as shown in FIG. 5, a tower crane 50 that is vacant during the night time when the construction work is not performed is used, and the 7th floor portion is passed through the carry-in entrance 5 left in the floor portion 39 of the 8th floor portion 40. A plurality of outer wall materials 4, 4 ... Required for constructing the outer wall 4A of 30 are carried into the 7th floor, and as shown in FIG. 6, the plurality of outer wall materials 4, 4 ... Are placed on the floor 29A on the 7th floor. Deploy. In this case as well, as shown in FIG. 8, the plurality of outer wall materials 4, 4 ... Brought into the 7th floor are placed on the floor 29A on the 7th floor, and the surfaces 4f, 4f ... Is arranged in the vicinity of the mounting position of each outer wall material 4, 4 ... To which the outer wall materials 4, 4 ... Are mounted.
Then, as shown in FIG. 6, the carry-in entrance 5 left on the floor portion 39 of the 8th floor portion 40 is closed with the deck plate 3, and the outer wall material 4 carried on the floor 19A of the 7th floor portion 30 is painted. The target surface 4f is painted and dried.

That is, the method of constructing the building according to the embodiment is the first step of constructing the floor portion of the floor one floor above the nth floor, leaving the carry-in entrance 5 for carrying the outer wall material 4 onto the floor of the nth floor from above. And, using the tower crane 50, a plurality of outer wall materials 4, 4 ... Required for constructing the outer wall 4A of the nth floor through the carry-in entrance 5 left on the floor one floor above the nth floor are placed on the nth floor. The plurality of outer wall materials 4, 4 ... That were carried in and carried into the nth floor were placed on the floor of the nth floor with the surfaces 4f, 4f ... Of the outer wall materials 4, 4 ... The second step of arranging the outer wall materials 4, 4 ... In the state and near the mounting position of each outer wall material 4, 4 ... The 3 steps of applying and drying the painted surface 4f, 4f ... Of the outer wall materials 4, 4 ..., and the 4th step of constructing the outer wall 4A of the nth floor using the outer wall materials 4, 4 ... By repeating the steps from the first step to the fourth step, the nth floor and above are constructed in order.

As shown in FIG. 7, as the outer wall material 4, for example, a rectangular plate-shaped ALC plate having a hollow portion 4a and being lightweight is used.
The outer wall material 4 has a configuration in which a convex portion 4b is provided on one end surface 4X which is the long side end surface and a concave portion 4c is provided on the other end surface 4Y side which is the other long side end surface, and is adjacent to each other vertically. The outer wall 4A is constructed by engaging the matching outer wall materials 4 and 4 with each other in an uneven manner and connecting them.
The outer wall material 4 is arranged and attached so that the long side end surface extends along the vertical direction, or is arranged and attached so that the long side end surface extends along the horizontal direction. ..

The work of attaching the plurality of outer wall materials 4, 4 ... At predetermined mounting positions of the skeleton to construct the outer wall 4A is performed on the floor of the building using a lifting machine such as a winch. In this way, by performing the work of constructing the outer wall 4A on the floor of the building using a lifting machine such as a winch, the outer wall material is attached to the mounting position from the outer scaffolding using a tower crane as in the conventional case. Compared with the case of constructing the outer wall, since the outer wall materials 4, 4 ... Can be attached to the mounting position to construct the outer wall 4A without using the tower crane 50, the usage period of the tower crane 50 can be shortened, and the cost and cost can be increased. It is possible to reduce the construction period.

Further, as shown in FIG. 8, the plurality of outer wall materials 4, 4 ... Are placed on the floor with the painted target surfaces 4f, 4f ... Of the outer wall materials 4, 4 ... facing upward, and the outer wall materials are respectively. In the case of arranging in the vicinity of the mounting positions of 4, 4 ..., When the outer wall materials 4 arranged on the floor are started by using the above-mentioned lifting machine such as a winch starting from one end side located on the outside of the building. In addition, the outer wall materials 4, 4 ... Are arranged on the floor so that the painted surface of the outer wall material 4 faces the outside of the building at a position near the mounting position of the outer wall material 4. By doing so, when the outer wall material 4 is attached to the mounting position and the outer wall 4A is constructed, the work of changing the orientation of the outer wall material 4 can be eliminated, and the mounting work of the outer wall material 4 can be simplified. Moreover, it becomes possible to carry out efficiently, and the construction period can be shortened.

As shown in FIG. 9, in the mounting structure of the outer wall 4A, for example, the upper flange 61 and the upper connecting member 70 of the H-shaped steel 60 to be beams are connected to the lower surface of the deck plate 3 of the floor 19A by welding or the like, or the deck plate. The lower connecting member 71 is connected to the lower flange 62 of the H-shaped steel 60 which is connected to the lower surface of the third floor by welding or the like, and the inner surface 4u of the outer wall material 4 located on the uppermost side of the lower floor is connected. A mounting portion 73 such as a Z-shaped metal fitting mounted on the floor and a lower connecting member 71 are connected by a connecting tool 75 such as a bolt and nut, and one end surface of an outer wall material 4 located on the uppermost side of the lower floor. After engaging the concave portion 4c formed on the other end surface 4Y of the outer wall material 4 located on the lowermost side of the upper floor with the convex portion 4b formed on the 4X, the outer wall located on the lowermost side of the upper floor. A mounting portion 74 such as a Z-shaped metal fitting mounted on the inner surface 4u of the material 4 and an upper connecting member 70 are connected by a connecting tool 76 such as a bolt and nut. Then, the surface of the H-shaped steel 60 is covered with a fireproof coating 78 by spraying rock wool or the like. The outer wall material 4 other than the outer wall material 4 located on the lowermost side and the uppermost side of the floor is located above the convex portion 4b formed on one end surface 4X of the outer wall material 4 located on the lower side. The recesses 4c formed on the other end surface 4Y of the outer wall material 4 to be formed are engaged and connected. Further, the engaging portion between the convex portion 4b and the concave portion 4c is filled with a sealing material. Further, a sealing material is also filled between the adjacent outer wall material 4 and the outer wall material 4 (joints).

According to the method for constructing a building according to the embodiment, the outer wall material 4 is carried onto the floor inside the building 1 under construction before the outer wall material 4 is attached to the outside of the building 1 at a high place of the building 1 under construction. After painting the outer wall material 4, the painted outer wall material 4 is attached to the building demolition to construct the outer wall 4A. Therefore, as in the conventional case, the outer wall material is attached to the building demolition at a high place of the building under construction. Compared to the case where the outer wall surface of the outer wall material is painted afterwards, the outer scaffold can be disassembled immediately after the installation work of the outer wall material 4 after painting is completed, so that the external scaffold can be quickly disassembled by the tower crane 50. It is possible to dismantle the tower crane at an early stage after the construction work is completed, and it is possible to improve the efficiency and shorten the construction period of the outer wall construction, and the outer wall construction can be done safely and well, and the entire building construction is completed. The construction period can be shortened.

Further, since the outer wall material 4 is carried onto the floor of the building 1 under construction and then the painting target surface 4f of the outer wall material 4 is painted on the floor, the outer wall construction can be performed safely and satisfactorily.

Further, the outer wall material 4 can be carried in during the night time when the tower crane 50 is vacant, and the tower crane 50 can be used for the construction work and the outer wall installation work at a time other than the night time. That is, by fully operating the tower crane 50 day and night, the tower crane 50 can be dismantled at an early stage, and the construction period of the entire building construction can be shortened.

Further, in the embodiment, the tower crane 50 is used until the coating applied to the coating target surface 4f of the outer wall material 4 dries on the floor of the lower floor after the carry-in entrance 5 on the upper floor is closed. Since the pillars on the upper floors are built and the beams are connected, the painting work on the lower floors and the construction work on the upper floors can be performed at the same time, shortening the construction period of the entire building construction. You will be able to plan.

Further, in the embodiment, before the plurality of outer wall materials 4, 4 ... Required for constructing the outer wall 4A of the lower floor portion are carried into the lower floor and the painting target surface 4f of the outer wall material 4 is painted. Since the carry-in entrance 5 left on the floor of the upper floor is closed with the deck plate 3, the carry-in entrance 5 can be surely closed, so that the painting work on the lower floor and the construction of the upper floor can be performed. In addition to being able to perform manual work at the same time, it is also possible to prevent the influence of objects, dust, etc. on the lower floors through the carry-in entrance 5 on the coating of the outer wall material 4, resulting in excellent quality outer wall material. It becomes possible to form the painted surface of 4.
The carry-in entrance 5 may be closed with a sheet material, a plate material, or the like, and later closed with a deck plate 3, and then concrete may be cast on the deck plate 3 to complete the floor on the upper floor.

In the above, an example of performing the building work for each floor is shown, but the building work may be performed for a plurality of floors at once. In reality, in this way, the construction work is often performed on multiple floors at once.

1 Building, 2 Steel columns, 4 Outer wall materials, 4A Outer wall, 4f Painted surface, 5 Carry-in entrance,
10 5th floor, 20 6th floor, 30 7th floor, 40 8th floor,
9, 19, 29, 39 Floors on each floor, 9A, 19A, 29A Floors on each floor,
50 tower crane.

Claims (5)

The first step of constructing the floor part of the floor one floor above the nth floor, leaving a carry-in entrance for carrying the outer wall material from above to the floor of the nth floor,
Using a tower crane, multiple outer wall materials necessary for constructing the outer wall of the nth floor are carried into the nth floor through the carry-in entrance left on the next floor above the nth floor, and to the nth floor. The second step of arranging the plurality of carried-in outer wall materials on the floor of the nth floor with the surface to be painted of each outer wall material facing upward and in the vicinity of the mounting position of each outer wall material.
After closing the carry-in entrance on the next floor above the nth floor, there are 3 steps to paint and dry each surface of each outer wall material placed on the floor on the nth floor.
In preparation for the 4th step of constructing the outer wall of the nth floor using each outer wall material with dried paint
A method for constructing a building, characterized in that floors n or higher are constructed in order by repeating the steps from the first step to the fourth step. After closing the carry-in entrance on the next floor above the nth floor, use a tower crane to dry one of the nth floors until the paint applied to the surface to be painted on the outer wall material dries on the floor of the nth floor. The method for constructing a building according to claim 1, wherein a building method of constructing a pillar on an upper floor and connecting beams is performed. To block the carry-in entrance on the next floor above the nth floor by installing a deck plate that closes the carry-in entrance and placing concrete on the deck plate to complete the floor one floor above the nth floor. The method for constructing a building according to claim 1 or 2, wherein the building is constructed. The method for constructing a building according to any one of claims 1 to 3, wherein the work of constructing the outer wall is performed on the floor of the building. In the second step, when the outer wall materials arranged on the floor are started from one end side located on the outside of the building, the painted surface of the outer wall material is placed on the outside of the building in the vicinity of the mounting position of the outer wall material. The method for constructing a building according to any one of claims 1 to 4, wherein the outer wall materials are arranged on the floor so as to face each other.

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