JP2022188502A - Composite wall - Google Patents

Abstract

To improve design of composite walls while eliminating need for formwork removal.SOLUTION: A composite wall 40 comprises: a pair of wood wall plates 42 which are arranged in a frame 10 facing each other and have assembly wall bars 44 attached to their respective inner wall surfaces 42A; and concrete 48 placed between the pair of wood wall plates 42.SELECTED DRAWING: Figure 3

Description

The present invention relates to composite walls.

As a formwork for a reinforced concrete wall, an embedded formwork (disposable formwork) such as a steel plate to which truss bars are attached or a precast concrete slab is known (see, for example, Patent Documents 1 and 2).

JP-A-7-54428 JP 2017-071987 A

Although the techniques disclosed in Patent Documents 1 and 2 do not require the work of removing the formwork, there is room for improvement in terms of the design of the wall (composite wall).

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention aims to improve the designability of a composite wall while eliminating the need to remove the formwork.

The composite wall according to claim 1 comprises a pair of wooden wallboards arranged in a frame facing each other and having prefabricated wall reinforcement attached to each inner wall surface, and a pair of said wooden wallboards. a set concrete;

According to the composite wall of claim 1, the pair of wooden wall boards are arranged in the frame in a state of facing each other. In addition, assembled wall reinforcement is attached to the inner wall surface of each of the pair of wooden wall boards. Concrete is placed between the pair of wooden wallboards.

Here, the pair of wooden wallboards form the outer surface of the composite wall and also function as a formwork for the composite wall. Therefore, the removal work of the formwork becomes unnecessary.

In addition, wooden wallboards are superior in designability compared to steel plates and the like. Therefore, by forming the outer surface of the composite wall with wooden wall boards, the design of the composite wall is improved.

As described above, according to the present invention, it is possible to improve the design of the composite wall while eliminating the need for removing the formwork.

Assembled wall reinforcements are attached to the inner wall surfaces of the pair of wooden wall boards. As a result, labor for arranging wall reinforcing bars on site can be reduced. Therefore, the workability of the composite wall is improved.

Furthermore, the out-of-plane rigidity of the wooden wallboard is increased by attaching the prefabricated wall reinforcement to the inner wall surface of the wooden wallboard. As a result, when concrete is placed between the pair of wooden wall boards, the pair of wooden wall boards is prevented from bending outward. Therefore, when concrete is placed between a pair of wooden wall boards, the number of separators that limit the space between the pair of wooden wall boards can be reduced or the separators can be omitted.

The composite wall according to claim 2 is the composite wall according to claim 1, wherein the assembled wall reinforcement bridges a plurality of truss reinforcements arranged in a predetermined direction and the tops of the adjacent truss reinforcements. and a pair of said wooden wallboards are arranged with said top crossing muscles spaced apart in the wall thickness direction.

According to the composite wall according to claim 2, the assembled wall reinforcement has a plurality of truss reinforcements arranged in a predetermined direction and a plurality of top crossing reinforcements bridging the tops of the adjacent truss reinforcements. , are attached to the inner wall surfaces of a pair of wooden wallboards, respectively. The pair of wooden wallboards are arranged with their top cross bars separated in the wall thickness direction.

By separating the top crossing reinforcements of the pair of wooden wall boards in the wall thickness direction in this manner, the top crossing reinforcements can be arranged at predetermined positions in the wall thickness direction.

Moreover, the wall thickness of the composite wall can be adjusted by increasing or decreasing the distance between the pair of wooden wall boards. Therefore, the versatility of the pair of wooden wall boards is improved.

The composite wall according to claim 3 is the composite wall according to claim 1, wherein the assembled wall reinforcement is a plurality of truss reinforcements arranged in a predetermined direction and spans intermediate portions of the adjacent truss reinforcements. and a plurality of crossed intermediate cross-reins, wherein the pair of wooden wall boards are arranged with the respective truss re-bars alternately arranged in the one direction.

According to the composite wall according to claim 3, the assembled wall reinforcement has a plurality of truss reinforcements arranged in a predetermined direction and a plurality of intermediate crossing reinforcements bridging between the intermediate portions of the adjacent truss reinforcements. and attached to the inner wall surfaces of a pair of wooden wallboards. The pair of wooden wall boards are arranged with their respective truss bars alternately arranged in one direction.

By arranging the truss bars of the pair of wooden wall boards alternately in one direction in this way, the out-of-plane rigidity of the pair of wooden wall boards is increased. Therefore, it is possible to further reduce the number of separators that limit the space between the pair of wooden wall boards when concrete is placed between the pair of wooden wall boards.

Further, for example, the pair of wooden wall boards are positioned in the wall thickness direction by bringing the top of the truss bar of one wooden wall board into contact with the intermediate cross bar of the other wooden wall board. Therefore, the workability of the pair of wooden wall boards is improved.

As described above, according to the present invention, it is possible to improve the design of the composite wall while eliminating the need for removing the formwork.

FIG. 2 is an elevational view of a frame with composite walls according to one embodiment. 2 is a cross-sectional view taken along line 2-2 of FIG. 1; FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1; FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 1; FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 1; FIG. 2 is an elevation view showing the construction process of the composite wall and frame shown in FIG. 1; FIG. It is a longitudinal section showing a modification of a synthetic wall concerning one embodiment. FIG. 8 is an exploded longitudinal sectional view of a pair of wooden wallboards of the composite wall shown in FIG. 7; It is a longitudinal section showing a modification of a synthetic wall concerning one embodiment. Figure 10 is an elevational view from the inside of one of the wooden wallboards shown in Figure 9; 11 is a cross-sectional view taken along line 11-11 of FIG. 10; FIG.

Hereinafter, a composite wall according to one embodiment will be described with reference to the drawings.

(framework)
FIG. 1 shows a frame 10 provided with a composite wall 40 according to this embodiment. The frame (frame frame) 10 includes a pair of pillars 20 spaced apart from each other, and an upper beam 30U and a lower beam 30L that are installed between the pair of pillars 20 .

Note that the arrow X shown in each drawing indicates the width direction of the composite wall 40 (the axial direction of the upper beam 30U and the lower beam 30L). An arrow Y indicates the wall thickness direction (out-of-plane direction) of the synthetic wall 40 . Further, an arrow Z indicates the height direction (vertical direction) of the synthetic wall 40 .

As shown in FIG. 2, the pillar 20 is made of reinforced concrete. A plurality of column main reinforcing bars 22 and a plurality of shear reinforcing bars 24 are embedded in the column 20 . A plurality of column main reinforcements 22 are arranged along the material axis direction of the column 20 . The plurality of shear reinforcing bars 24 are arranged at intervals in the material axis direction of the column 20 and surround the plurality of column main bars 22 .

As shown in FIG. 3, the upper beam 30U is made of reinforced concrete. A plurality of beam main reinforcements 32 and a plurality of shear reinforcements 34 are embedded in the upper beam 30U. A plurality of beam main reinforcements 32 are arranged along the material axis direction of the upper beam 30U. The plurality of shear reinforcements 34 are arranged at intervals in the material axis direction of the upper beam 30U and surround the plurality of beam main reinforcements 32 . A lower beam 30L is arranged below the upper beam 30U.

As shown in FIG. 4, the lower beam 30L is made of reinforced concrete. A plurality of beam main reinforcements 32 and a plurality of shear reinforcements 34 are embedded in the lower beam 30L. A plurality of beam main reinforcements 32 are arranged along the material axis direction of the lower beam 30L. The plurality of shear reinforcements 34 are arranged at intervals in the material axis direction of the lower beam 30L, and surround the plurality of beam main reinforcements 32 .

(composite wall)
As shown in FIG. 1, between the upper beam 30U and the lower beam 30L, a plurality (three in this embodiment) of composite walls 40 are arranged side by side. These composite walls 40 function, for example, as earthquake-resistant walls and load-bearing walls. As shown in FIGS. 2, 3 and 4, each composite wall 40 comprises a pair of wooden wallboards 42 and concrete 48 placed between the pair of wooden wallboards 42. .

The pair of wooden wall boards 42 face each other in the wall thickness direction (arrow Y direction) of the composite wall 40 . Also, the pair of wooden wall plates 42 are formed in a rectangular shape when viewed in the wall thickness direction. Each wooden wall plate 42 is formed of a wooden board such as CLT (Cross Laminated Timber), LVL (Laminated Veneer Lumber), DLT (Dowel Laminated Timber), NLT (Nail Laminated Timber), laminated lumber, or plywood. there is

As shown in FIGS. 2 and 3, assembled wall reinforcements 44 are attached in advance to the inner wall surfaces 42A of the pair of wooden wall boards 42. As shown in FIG. That is, the wooden wall board 42 and the assembled wall reinforcement 44 of the present embodiment are pre-integrated as a unit in a factory or the like.

The wooden wall plate 42 and the assembled wall reinforcement 44 are not limited to units integrated in advance. For example, the separate wooden wall plate 42 and assembled wall reinforcement 44 may be integrated on site.

The assembly wall reinforcement 44 has a plurality of truss reinforcements 50 and a plurality of top cross reinforcements 70 . The plurality of truss bars 50 extend in the lateral width direction of the synthetic wall 40 and are arranged at intervals in the height direction of the synthetic wall 40 . Note that the height direction of the composite wall 40 is an example of a predetermined one direction.

As shown in FIGS. 3 and 4 , the truss muscle 50 has a pair of lower chord muscles 52 , an upper chord muscle 54 and a pair of lattice muscles 56 . The pair of lower chord muscles 52 extend in the width direction of the composite wall 40 and are spaced apart in the height direction of the composite wall 40 . An upper chord muscle 54 is arranged inside (center side) of the synthetic wall 40 with respect to the pair of lower chord muscles 52 .

The crescent muscle 54 functions as the lateral wall muscle of the composite wall 40 . The upper chord 54 extends in the lateral width direction of the composite wall 40 and is arranged between the pair of lower chords 52 when viewed from the wall thickness direction of the composite wall 40 . The upper chord muscle 54 and the pair of lower chord muscles 52 are connected by a pair of lattice muscles 56 arranged on both sides of the superior chord muscle 54 .

As shown in FIG. 2 , the pair of lattice muscles 56 has a wavy shape in which crests and troughs are alternately repeated in the lateral width direction of the composite wall 40 . The pair of lattice muscles 56 are respectively joined to the upper chord muscle 54 and the lower chord muscle 52 by welding or the like.

As shown in FIG. 3, the truss bars 50 are attached to the inner wall surface 42A of the wooden wall plate 42 via a plurality of brackets 60. As shown in FIG. The plurality of brackets 60 are made of metal plates such as steel plates. The plurality of brackets 60 are arranged at intervals in the longitudinal direction of the pair of lower chord muscles 52 and are joined to the pair of lower chord muscles 52 by welding or the like.

The bracket 60 is bent like a crank when viewed from the width direction of the synthetic wall 40 . This bracket 60 has an inner flange portion 62 , an outer flange portion 64 and a connecting portion 66 . The inner flange portion 62 faces the inner wall surface 42A of the wooden wall plate 42 . The lower chord 52 is joined to the inner flange portion 62 by welding or the like.

An outer flange portion 64 is arranged below and outside the inner flange portion 62 . A lower end portion of the inner flange portion 62 and an upper end portion of the outer flange portion 64 are connected via a connecting portion 66 . The outer flange portion 64 is fixed to the inner wall surface 42A of the wooden wall plate 42 by a plurality of screws 68 while being superimposed on the inner wall surface 42A.

Thereby, the truss bar 50 is attached to the inner wall surface 42A of the wooden wall plate 42 via a plurality of brackets 60. As shown in FIG. Also, as described above, the inner flange portion 62 faces the inner wall surface 42A of the wooden wall plate 42 . Therefore, the concrete 48 easily flows between the inner flange portion 62 and the inner wall surface 42A of the wooden wall plate 42 .

The shape, arrangement, and number of brackets 60 can be changed as appropriate. It is also possible to omit the bracket 60 and, for example, join the pair of lower chord reinforcements 52 of the truss reinforcements 50 to the inner wall surface 42A of the wooden wall plate 42 with an adhesive or the like.

(top cross muscle)
A plurality of top cross bars 70 serve as vertical wall bars of the composite wall 40 . Moreover, the plurality of top crossing reinforcements 70 extend in the height direction of the composite wall 40 and are arranged at intervals in the widthwise direction of the composite wall 40 . These top crossing reinforcements 70 span the tops 50T of the truss reinforcements 50 that are adjacent to each other in the height direction of the composite wall 40, and are joined to the tops 50T of the truss reinforcements 50 by welding or the like.

The pair of wooden wall boards 42 are arranged in a state in which the top cross bars 70 attached to the respective inner wall surfaces 42A are separated from each other in the wall thickness direction when the composite wall 40 is viewed from the width direction. In this state, concrete 48 is placed between a pair of wooden wall plates 42 (inner wall surfaces 42A) facing each other.

(Column connecting muscle)
As shown in FIG. 2 , the column 20 and the side of the composite wall 40 on the column side are connected via a plurality of column connection bars 26 . In the following description, of the three composite walls 40 shown in FIG. 1, the central composite wall 40 is referred to as a central composite wall 40M, and the composite walls 40 on both sides as column-side composite walls 40S. Also, the central composite wall 40M and the column-side composite wall 40S are collectively referred to as the composite wall 40. As shown in FIG.

As shown in FIG. 2, the plurality of column connection reinforcements 26 are arranged along the width direction of the composite wall 40 and extend over the column 20 and the side portion of the column-side composite wall 40S. One end side of each column connection reinforcement 26 is arranged along one end side of the upper chord muscle 54 of the truss reinforcement 50 and is bound to the one end side of the top chord reinforcement 54 by a binding wire or the like (not shown). One end side of each column connection reinforcement 26 is embedded (fixed) in concrete 48 .

The other end side of each column connecting muscle 26 extends into the column 20 from the side end of the column-side composite wall 40S and is embedded (fixed) in the column 20 . Via these column connection bars 26, the column 20 and the side portion of the column-side composite wall 40S are connected so as to be able to transmit stress (shear force).

Note that the configuration, arrangement, and number of the column connection reinforcements 26 can be changed as appropriate. Also, the column connection reinforcement 26 may be arranged after the pair of wooden wall boards 42 are installed without being joined to the truss reinforcement 50 .

(Upper beam connection bar)
As shown in FIG. 3, the upper beam 30U and the upper part of the composite wall 40 are connected via a plurality of upper beam connection bars 36U. Specifically, the plurality of upper beam connecting reinforcements 36U are arranged along the height direction of the composite wall 40 and extend over the upper beams 30U and the upper portion of the composite wall 40 .

The lower end side of each upper beam connecting bar 36U is arranged along the upper end side of the top cross bar 70 and is bound to the upper end side of the top cross bar 70 by a binding wire or the like (not shown). Further, each upper beam connection reinforcement 36U is embedded (fixed) in concrete 48 .

The upper end side of each upper beam connecting muscle 36U extends from the upper end of the composite wall 40 into the upper beam 30U and is embedded (fixed) in the upper beam 30U. Via these upper beam connection bars 36U, the upper beam 30U and the upper part of the composite wall 40 are connected so as to be able to transmit stress (shear force).

Note that the configuration, arrangement, and number of the upper beam connection bars 36U can be changed as appropriate. Further, the upper beam connecting reinforcement 36U may not be attached to the top crossing reinforcement 70 in advance, but may be arranged after the pair of wooden wall boards 42 are installed.

(Lower beam connecting muscle)
As shown in FIG. 4, the lower beam 30L and the lower part of the composite wall 40 are connected via a plurality of lower beam connection bars 36L. Specifically, the plurality of lower beam connecting reinforcements 36L are arranged along the height direction of the composite wall 40 and extend over the lower beams 30L and the lower portion of the composite wall 40 . The lower end side of each lower beam connection bar 36L is embedded (fixed) in the lower beam 30L.

The upper end side of each lower beam connecting reinforcement 36L extends from the upper surface of the lower beam 30L into the interior of the lower beam 30L and is arranged along the lower end side of the top crossing reinforcement 70 . Further, the upper end side of each lower beam connection bar 36L is embedded (fixed) in concrete 48 . Thereby, the upper end side of the lower beam connecting muscle 36L and the lower end side of the top crossing muscle 70 are connected by the lap joint. Via these lower beam connection bars 36L, the lower beam 30L and the lower part of the composite wall 40 are connected so as to be able to transmit stress (shear force).

Note that the configuration, arrangement, and number of the lower beam connection bars 36L can be changed as appropriate. Also, the lower beam connecting reinforcement 36L may not be attached to the top crossing reinforcement 70 in advance, but may be arranged after the pair of wooden wall boards 42 are installed.

(wall connection muscle)
As shown in FIG. 5 , the central composite wall 40 and the column-side composite wall 40 that are adjacent to each other are connected via a plurality of wall connection bars 46 .

Specifically, the plurality of wall connection reinforcements 46 are arranged along the lateral width direction of the composite wall 40, and span the adjacent central composite wall 40M and column-side composite wall 40S.

One end side of each wall connecting muscle 46 is arranged along one end side of the upper chord muscle 54 of the truss muscle 50 of the central composite wall 40M, and is bound to the one end side of the upper chord muscle 54 by a binding wire or the like (not shown). Also, one end side of each wall connecting muscle 46 is embedded (fixed) in the concrete 48 of the central composite wall 40M.

The other end side of each wall connection reinforcement 46 extends from the side end of the central composite wall 40M into the inside of the column-side composite wall 40S, and is arranged along the upper chord 54 of the column-side composite wall 40S. Further, the other end side of each wall connection reinforcement 46 is embedded (fixed) in the concrete 48 of the column-side composite wall 40S. Via these wall connecting muscles 46, the central composite wall 40M and the column-side composite wall 40S that are adjacent to each other are connected so as to be able to transmit stress (shear force).

Note that the configuration, arrangement, and number of the wall-connecting muscles 46 can be changed as appropriate. Also, the wall connection reinforcement 46 may be attached in advance to the truss reinforcement 50 of the column-side composite wall 40S instead of the truss reinforcement 50 of the central composite wall 40M.

(positioning material)
As shown in FIG. 4, a pair of positioning members 80 are attached to the upper surface of the lower beam 30L to position the lower ends of the pair of wooden wall boards 42 in the wall thickness direction with respect to the lower beam 30L. . The pair of positioning members 80 are spaced apart in the wall thickness direction of the synthetic wall 40 . Each positioning member 80 is an angle bent in an L shape when viewed from the width direction of the composite wall 40 .

One flange portion 80A of the positioning member 80 is fixed to the upper surface of the lower beam 30L by a post-installed anchor 82. As shown in FIG. Further, the other flange portion 80B of each positioning member 80 is raised in a wall shape from the outer end portion of the one flange portion 80A. The lower end portion of the wooden wall plate 42 is abutted against the other flange portion 80B. Thereby, the lower ends of the pair of wooden wall boards 42 are positioned in the wall thickness direction with respect to the lower beam 30L.

Note that the configuration and arrangement of the positioning member 80 can be changed as appropriate. Moreover, the positioning member 80 may be provided as required, and can be omitted as appropriate.

(Construction method for composite wall)
Next, an example of the construction method of the composite wall 40 will be described.

FIG. 6 shows a lower beam 30L that spans the pair of pillars 20. As shown in FIG. Note that the column main reinforcement 22 and the shear reinforcing reinforcement 24 are arranged in the column 20 above the lower beam 30L, but the concrete is in a state before placing. Also, the upper beam 30U is in a state before construction.

First, a pair of wooden wall boards 42 to be the column-side composite wall 40S are placed on the upper surface of the lower beam 30L on the side of the column 20 so as to face each other in the plate thickness direction of the column-side composite wall 40S. At this time, as shown in FIG. 4, between the pair of wooden wall boards 42, a plurality of lower beam connection bars 36L projecting from the upper surfaces of the lower beams 30L are arranged.

6, the pair of wooden wallboards 42 of the column-side composite wall 40S is slid toward the pillar 20, and a plurality of column connection bars protruding from the side ends of the pair of wooden wallboards 42 are arranged. 26 are inserted between adjacent shear reinforcement bars 24 .

In this state, as shown in FIG. 4, the lower end portions of the pair of wooden wall plates 42 are brought into contact with the flange portion 80B of the positioning member 80. As shown in FIG. Thereby, the lower ends of the pair of wooden wall boards 42 are positioned with respect to the lower beam 30L. A restraining member 84 is temporarily placed outside the lower end portions of the pair of wooden wall plates 42 to limit the opening of the lower end portions of the pair of wooden wall plates 42 . Note that the restraining member 84 may be left without being removed.

Next, as indicated by an arrow b in FIG. 6, a pair of wooden wall boards 42 that will form the central composite wall 40M are dropped between the adjacent column-side composite walls 40S. At this time, a plurality of wall connection bars 46 protruding from both side ends of the pair of wooden wall boards 42 forming the central composite wall 40M are inserted between the pair of wooden wall boards 42 forming the column-side composite wall 40S. do.

Next, as shown in FIG. 3 , a formwork 38 for the upper beam 30U is temporarily installed, and the beam main reinforcement 32 and the shear reinforcing reinforcement 34 are arranged in the formwork 38 . At this time, the upper end sides of the upper beam connection bars 36U protruding upward from the upper ends of the pair of wooden wall plates 42 are arranged between the adjacent shear reinforcing bars 34 . Formwork 38 as a restraining member is abutted against the outer surfaces of the upper ends of the pair of wooden wall boards 42 . The formwork 38 limits the opening of the upper ends of the pair of wooden wall boards 42 .

Next, concrete 48 is placed between the pair of wooden wall boards 42 that will form the column-side composite wall 40S and the central composite wall 40M. At this time, the joint portion between the adjacent column-side composite wall 40S and the central composite wall is closed with a mold (not shown) or the like. Concrete is placed in the formwork 38 of the pair of pillars 20 and the upper beam 30U. As a result, the frame 10, the column-side composite wall 40S, and the central composite wall 40M are constructed integrally.

In addition, the construction method of the composite wall 40 is not limited to the one described above, and can be changed as appropriate.

(Action)
Next, the operation of this embodiment will be described.

As shown in FIGS. 3 and 4, according to this embodiment, a pair of wooden wall boards 42 are arranged in the frame 10 in a state of facing each other. Further, assembled wall reinforcements 44 are attached to the inner wall surface 42A of each of the pair of wooden wall boards 42. As shown in FIG. Concrete 48 is placed between the pair of wooden wall plates 42 . Thereby, the composite wall 40 functions as a seismic wall. Also, the sound insulation of the composite wall 40 is enhanced.

Here, the pair of wooden wall boards 42 form the outer surface of the composite wall 40 and also function as a formwork for the composite wall 40 . Therefore, the removal work of the formwork becomes unnecessary.

In addition, the wooden wall plate 42 is superior in designability as compared with a steel plate or the like. Therefore, by forming the outer surface of the composite wall 40 with the wooden wall plate 42, the design of the composite wall 40 is improved.

As described above, in this embodiment, the design of the composite wall 40 can be improved while removing the formwork is not required.

Further, by covering the surface of the concrete 48 with the pair of wooden wall plates 42, reinforcing bars for suppressing cracks or the like on the surface of the concrete 48 become unnecessary. Therefore, the cost of composite wall 40 can be reduced.

Further, assembled wall reinforcements 44 are attached to the inner wall surfaces 42A of the pair of wooden wall plates 42, respectively. As a result, labor for arranging wall reinforcing bars on site can be reduced. Therefore, the workability of the composite wall 40 is improved.

Further, by attaching the assembly wall reinforcement 44 to the inner wall surface 42A of the wooden wall board 42, the out-of-plane rigidity of the wooden wall board 42 is enhanced. As a result, when the concrete 48 is placed between the pair of wooden wall boards 42, the pair of wooden wall boards 42 are prevented from bending outward. Therefore, the number of separators that limit the space between the pair of wooden wall boards 42 can be reduced or the separators can be omitted when the concrete 48 is placed.

In particular, by forming the pair of wooden wall plates 42 with CLT having high out-of-plane rigidity, the number of separators can be further reduced or the separators can be omitted. In addition, by forming the pair of wooden wallboards 42 by CLT, the composite wall 40 is also improved in earthquake resistance.

Furthermore, the assembled wall reinforcement 44 has a plurality of truss reinforcements 50 and a plurality of top cross reinforcements 70 spanning the tops 50T of the adjacent truss reinforcements 50, and the inner wall surfaces 42A of the pair of wooden wall boards 42 have attached to each. The pair of wooden wall boards 42 are arranged with the top cross bars 70 separated from each other in the wall thickness direction (arrow Y direction).

By thus separating the top crossing reinforcements 70 of the pair of wooden wall boards 42 in the wall thickness direction, the top crossing reinforcements 70 as vertical wall reinforcements can be arranged at predetermined positions in the wall thickness direction.

Moreover, the wall thickness of the composite wall 40 can be adjusted by increasing or decreasing the distance between the pair of wooden wall boards 42 . Therefore, the versatility of the pair of wooden wall boards 42 is improved.

(Modification)
Next, a modification of the above embodiment will be described.

In the above-described embodiment, the top portion 50T of the truss bar 50 is provided with the top cross bar 70 crossing the truss bar 50 . However, the crossing bar crossing the truss bar 50 is not limited to the top portion 50T of the truss bar 50, and may be provided in the intermediate portion of the truss bar 50.

For example, in the modification shown in FIGS. 7 and 8, a plurality of intermediate cross-reinforcements 90 are bridged over the intermediate portions 50M of the adjacent truss reinforcements 50 in the projecting direction. A plurality of intermediate cross-bars 90 function as vertical wall bars of the composite wall 40 . These intermediate cross-reinforcements 90 pass through the intermediate portions 50M of the plurality of truss reinforcements 50 in the height direction of the composite wall 40 and are arranged at intervals in the width direction of the composite wall 40 .

Each intermediate cross reinforcement 90 is joined by welding or the like to a pair of intermediate reinforcements 58 provided in the intermediate portion 50M of the truss reinforcement 50, respectively. The pair of intermediate reinforcements 58 extend in the lateral width direction of the composite wall 40 along the pair of lattice reinforcements 56 and are joined to the lattice reinforcements 56 by welding or the like. Note that the assembly wall reinforcement 44 of this modified example has a plurality of truss reinforcements 50 , a plurality of intermediate cross reinforcements 90 , and a plurality of intermediate reinforcements 58 .

As shown in FIG. 7, the pair of wooden wall boards 42 are arranged such that the truss bars 50 attached to each inner wall surface 42A are alternately arranged in the height direction of the composite wall 40 when the composite wall 40 is viewed from the width direction. They are arranged side by side. Also, the pair of wooden wall boards 42 are arranged in a state in which the top portion 50T of one truss bar 50 is in contact with the intermediate cross bar 90 of the other truss bar 50 . Thereby, the pair of wooden wall plates 42 are positioned in the wall thickness direction. As a result, the distance between the pair of wooden wall boards 42 is set to a predetermined value. In this state, concrete 48 is placed between a pair of wooden wall boards 42 facing each other.

By arranging the truss bars 50 of the pair of wooden wall boards 42 alternately in the height direction of the composite wall 40 in this manner, the out-of-plane rigidity of the pair of wooden wall boards 42 is enhanced. Therefore, when placing concrete 48 between the pair of wooden wall boards 42, the number of separators that limit the space between the pair of wooden wall boards 42 can be further reduced, or the separators can be omitted.

Further, for example, when one of the wooden wall boards 42 faces each other, the top part 50T of one truss bar 50 is brought into contact with the intermediate cross bar 90 of the other truss bar 50, so that the pair of wooden wall boards 42 Positioned in the wall thickness direction. Therefore, the workability of the pair of wooden wall boards 42 is improved.

In this example, in the pair of wooden wall boards 42, the top portion 50T of one truss bar 50 is in contact with the intermediate cross bar 90 of the other truss bar 50. As shown in FIG. However, in the pair of wooden wall boards 42, the top 50T of one truss bar 50 and the intermediate cross bar 90 of the other truss bar 50 do not necessarily have to be in contact with each other. There may be a gap between the truss bar 50 and the intermediate cross bar 90.

Next, in the above embodiment, the built-up wall reinforcement 44 has truss reinforcement 50 and top cross reinforcement 70 . However, the building wall reinforcement 44 is not limited to the truss reinforcement 50 and the top cross reinforcement 70 .

For example, in the variations shown in FIGS. 9, 10 and 11, the built-up wall reinforcement 100 has a plurality of horizontal wall reinforcements 102 and a plurality of vertical wall reinforcements 104 . As shown in FIG. 9, the assembled wall reinforcement 100 is attached to the inner wall surface 42A of the wooden wall plate 42 via a plurality of brackets 110, which will be described later.

As shown in FIG. 10 , the plurality of lateral wall reinforcements 102 extend in the lateral width direction of the synthetic wall 40 and are arranged at intervals in the height direction of the synthetic wall 40 . On the other hand, the plurality of vertical wall reinforcements 104 extend in the height direction of the composite wall 40 and are arranged at intervals in the width direction of the composite wall 40 . These horizontal wall reinforcements 102 and vertical wall reinforcements 104 are joined in a grid pattern when viewed from the thickness direction of the composite wall 40 .

The horizontal wall reinforcements 102 and the vertical wall reinforcements 104 are joined at intersections by unillustrated binding wires, welding, or the like. The intersections of the horizontal wall reinforcement 102 and the vertical wall reinforcement 104 are attached to the inner wall surface 42A of the wooden wall plate 42 via brackets 110, respectively.

As shown in FIG. 11, the bracket 110 is made of hat-shaped steel. This bracket 110 has a bracket body 112 and a pair of flanges 114 . The cross-sectional shape of the bracket body 112 is C-shaped in plan view, with the center side of the composite wall 40 being open. A pair of flanges 114 are provided at the opening side end of the bracket body 112 .

The pair of flanges 114 extend outward from the end of the bracket body 112 on the opening side. The lateral wall reinforcement 102 is joined to the pair of flanges 114 by welding or the like. A wall portion (base portion) 112A on the opposite side of the opening of the bracket body 112 is fixed to the inner wall surface 42A of the wooden wall plate 42 with screws 120. As shown in FIG.

As described above, in this modification, the assembled wall reinforcement 100 is attached to the inner wall surface 42A of the wooden wall plate 42 via a plurality of brackets (hat-shaped steel) 110 . As a result, the structure of the assembled wall reinforcement 100 can be simplified while the wall thickness of the composite wall 40 is reduced.

Note that the number, arrangement, and orientation of the brackets 110 are not limited to those described above, and can be changed as appropriate.

Next, in the above embodiment, the pair of wooden wall boards 42 of the composite wall 40 are not connected via a separator. However, the pair of wooden wall boards 42 may be connected via a separator if necessary.

Further, in the above embodiment, the truss bars 50 of the pair of wooden wall boards 42 are arranged side by side in the height direction of the composite wall 40 . However, the truss bars 50 may be arranged side by side in the width direction of the composite wall 40 . In this case, the superior chord muscle 54 of the truss muscle 50 functions as the vertical wall muscle of the composite wall 40 and the top cross muscle 70 functions as the lateral wall muscle of the composite wall 40 . Further, the width direction of the composite wall 40 is an example of one predetermined direction.

Also, the assembly wall reinforcement 44 is not limited to the truss reinforcement 50 and the top cross reinforcement 70 . The assembled wall reinforcement 44 may be configured to include at least one of the vertical wall reinforcement and the horizontal wall reinforcement of the composite wall 40, and its configuration can be changed as appropriate.

Further, in the above embodiment, the synthetic wall 40 is joined to the column 20 . However, composite wall 40 does not necessarily have to be joined to column 20 . Moreover, it is also possible to provide an opening between the composite wall 40 and the pillar 20 as required.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate. It goes without saying that various aspects can be implemented without departing from the scope.

10 Frame 40 Composite wall 42 Wooden wall plate 42A Inner wall surface 44 Assembled wall reinforcement 48 Concrete 50 Truss reinforcement 50T Top (top of truss reinforcement)
50M middle part (middle part of truss bar)
70 top cross bar 90 middle cross bar 100 assembled wall bar arrow Z height direction of composite wall (one predetermined direction)

Claims (3)

a pair of wooden wallboards arranged in a frame facing each other and having prefabricated wall reinforcement attached to each inner wall surface;
Concrete placed between the pair of wooden wall plates;
Composite wall with The built-up wall reinforcement includes:
a plurality of truss muscles lined up in one predetermined direction;
A plurality of top crossing muscles spanning the tops of the adjacent truss muscles;
has
The pair of wooden wall boards are arranged with the top cross bars separated in the wall thickness direction,
A composite wall according to claim 1 . The built-up wall reinforcement includes:
a plurality of truss muscles lined up in one predetermined direction;
a plurality of intermediate crossing muscles spanning intermediate portions of the adjacent truss muscles;
has
The pair of wooden wall boards are arranged with the truss bars alternately arranged in the one direction,
A composite wall according to claim 1 .

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