Synthetic wall

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

[Technical field]

[0001] The present invention relates to composite walls. [Background technology]

[0002] 2. Description of the Related Art As a formwork for reinforced concrete walls, embedded formwork (disposable formwork) such as a steel plate with truss bars attached or a precast concrete slab is known (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-54428 [Patent Document 2] JP 2017-071987 A Summary of the Invention [Problem to be solved by the invention]

[0004] The techniques disclosed in Patent Documents 1 and 2 eliminate the need to remove formwork, but there is room for improvement in terms of the design of the wall (composite wall).

[0005] In consideration of the above, the present invention aims to improve the design of composite walls while eliminating the need to remove formwork. [Means for solving the problem]

[0006] According to the first aspect The composite wall comprises a pair of wooden wall panels arranged opposite each other within a framework, each having prefabricated wall reinforcement attached to its inner wall surface, and concrete poured between the pair of wooden wall panels.

[0007] First aspectAccording to the composite wall of the present invention, a pair of wooden wall panels are arranged in a frame in a state where they face each other. Also, prefabricated wall reinforcement is attached to the inner wall surface of each of the pair of wooden wall panels. Concrete is poured between the pair of wooden wall panels.

[0008] Here, the pair of wooden wall panels form the outer surface of the composite wall and also function as a formwork for the composite wall, which eliminates the need to remove the formwork.

[0009] Furthermore, wooden wall panels have superior design properties compared to steel panels, etc. Therefore, by forming the outer surface of a composite wall with wooden wall panels, the design properties of the composite wall are improved.

[0010] In this way, the present invention makes it possible to improve the design of the composite wall while eliminating the need to remove formwork.

[0011] In addition, prefabricated wall reinforcement bars are attached to the inner wall surfaces of each pair of wooden wall panels, which reduces the amount of work required for arranging wall reinforcement bars on-site, thus improving the ease of construction of the composite wall.

[0012] Furthermore, by attaching prefabricated wall reinforcement to the inner wall surface of the wooden wall board, the out-of-plane rigidity of the wooden wall board is increased. This prevents the pair of wooden wall boards from bending outward when concrete is poured between them. Therefore, when pouring concrete between the pair of wooden wall boards, the number of separators that limit the gap between the pair of wooden wall boards can be reduced or the separators can be omitted.

[0013] According to the second aspect The composite wall is According to the first aspect In a composite wall, the assembled wall reinforcement has a plurality of truss reinforcement bars arranged in a predetermined direction and a plurality of top cross reinforcement bars arranged across the tops of adjacent truss reinforcement bars, and a pair of the wooden wall panels are arranged with each of the top cross reinforcement bars spaced apart in the wall thickness direction.

[0014] Second aspectAccording to the composite wall of the present invention, the prefabricated wall reinforcement has a plurality of truss reinforcements arranged in a predetermined direction and a plurality of top cross reinforcements that are bridged over the tops of the adjacent truss reinforcements, and is attached to the inner wall surfaces of a pair of wooden wall panels. The pair of wooden wall panels are arranged with the top cross reinforcements spaced apart in the wall thickness direction.

[0015] By separating the top cross reinforcements of a pair of wooden wallboards in the wall thickness direction in this manner, the top cross reinforcements can be arranged at predetermined positions in the wall thickness direction.

[0016] In addition, the thickness of the composite wall can be adjusted by increasing or decreasing the distance between the pair of wooden wall panels, thereby improving the versatility of the pair of wooden wall panels.

[0017] According to the third aspect The composite wall is According to the first aspect In the composite wall, the assembled wall reinforcement has a plurality of truss reinforcement bars arranged in a predetermined direction and a plurality of intermediate cross reinforcement bars arranged across the intermediate portions of the adjacent truss reinforcement bars, and the pair of wooden wall panels are arranged with the truss reinforcement bars arranged alternately in the one direction.

[0018] Third aspect According to the composite wall of the present invention, the prefabricated wall reinforcement has a plurality of truss reinforcements arranged in a predetermined direction and a plurality of intermediate cross reinforcements that are bridged between the intermediate portions of the adjacent truss reinforcements, and is attached to the inner wall surfaces of a pair of wooden wall panels. The pair of wooden wall panels are arranged with the truss reinforcements alternately arranged in one direction.

[0019] By arranging the truss bars of the pair of wooden wall panels alternately in one direction in this way, the out-of-plane rigidity of the pair of wooden wall panels is increased, and therefore the number of separators that limit the gap between the pair of wooden wall panels can be further reduced when pouring concrete between the pair of wooden wall panels.

[0020] In addition, for example, the pair of wooden wall panels can be positioned in the wall thickness direction by contacting the top of the truss reinforcement of one wooden wall panel with the middle cross reinforcement of the other wooden wall panel, thereby improving the workability of the pair of wooden wall panels. Effect of the Invention

[0021] As described above, according to the present invention, it is possible to improve the design of a composite wall while eliminating the need to remove formwork. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is an elevation view showing a frame provided with a composite wall according to one embodiment. [Diagram 2] 2 is a cross-sectional view taken along line 2-2 of FIG. 1. [Diagram 3] 3 is a cross-sectional view taken along line 3-3 of FIG. 1. [Figure 4] 4 is a cross-sectional view taken along line 4-4 of FIG. 1. [Diagram 5] 5 is a cross-sectional view taken along line 5-5 of FIG. 1. [Figure 6] FIG. 2 is an elevation view showing the construction process of the composite wall and frame shown in FIG. 1. [Figure 7] FIG. 11 is a vertical cross-sectional view showing a modified example of a composite wall according to one embodiment. [Figure 8] 8 is an exploded vertical cross-sectional view of a pair of wooden wall panels of the composite wall shown in FIG. 7. FIG. [Figure 9] FIG. 11 is a vertical cross-sectional view showing a modified example of a composite wall according to one embodiment. [Figure 10] FIG. 10 is an elevational view of one of the wooden wall panels shown in FIG. 9, viewed from the inside. [Figure 11] 11 is a cross-sectional view taken along line 11-11 of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, a composite wall according to one embodiment will be described with reference to the drawings.

[0024] (frame) 1 shows a frame 10 provided with a composite wall 40 according to this embodiment. The frame (rigid frame) 10 includes a pair of columns 20 spaced apart from each other, and an upper beam 30U and a lower beam 30L erected on the pair of columns 20.

[0025] In addition, the arrow X shown in each figure indicates the width direction of the composite wall 40 (the material axis direction of the upper beam 30U and the lower beam 30L). The arrow Y indicates the wall thickness direction (out-of-plane direction) of the composite wall 40. Furthermore, the arrow Z indicates the height direction (up-down direction) of the composite wall 40.

[0026] As shown in Fig. 2, the column 20 is made of reinforced concrete. A plurality of column main reinforcements 22 and a plurality of shear reinforcements 24 are embedded in the column 20. The plurality of column main reinforcements 22 are arranged along the material axis direction of the column 20. The plurality of shear reinforcements 24 are arranged at intervals in the material axis direction of the column 20, and surround the plurality of column main reinforcements 22.

[0027] 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 this upper beam 30U. The 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 this upper beam 30U.

[0028] 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. The 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.

[0029] (Synthetic wall) As shown in Fig. 1, a plurality of (three in this embodiment) composite walls 40 are arranged side by side between the upper beam 30U and the lower beam 30L. These composite walls 40 function as, for example, earthquake-resistant walls or load-bearing walls. As shown in Figs. 2, 3, and 4, each composite wall 40 has a pair of wooden wall panels 42 and concrete 48 poured between the pair of wooden wall panels 42.

[0030] The pair of wooden wall panels 42 face each other in the wall thickness direction (arrow Y direction) of the composite wall 40. The pair of wooden wall panels 42 are formed into a rectangular shape when viewed from the wall thickness direction. Each wooden wall panel 42 is formed from 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.

[0031] 2 and 3, prefabricated wall reinforcement bars 44 are attached in advance to the inner wall surfaces 42A of a pair of wooden wall panels 42. That is, the wooden wall panels 42 and the prefabricated wall reinforcement bars 44 of this embodiment are formed into an integrated unit in advance in a factory or the like.

[0032] It should be noted that the wooden wall panel 42 and the prefabricated wall reinforcement 44 are not limited to being a pre-integrated unit, and for example, the wooden wall panel 42 and the prefabricated wall reinforcement 44 may be separate bodies that are integrated on-site.

[0033] The prefabricated wall reinforcement 44 has a plurality of truss reinforcements 50 and a plurality of top cross reinforcements 70. The plurality of truss reinforcements 50 extend in the width direction of the composite wall 40 and are arranged at intervals in the height direction of the composite wall 40. The height direction of the composite wall 40 is an example of a predetermined direction.

[0034] 3 and 4, the truss bar 50 has a pair of lower string bars 52, an upper string bar 54, and a pair of lattice bars 56. The pair of lower string bars 52 extend in the width direction of the composite wall 40 and are arranged at an interval in the height direction of the composite wall 40. The upper string bars 54 are arranged on the inside (toward the center) of the composite wall 40 relative to the pair of lower string bars 52.

[0035] The upper string muscles 54 function as horizontal wall muscles of the composite wall 40. The upper string muscles 54 extend in the width direction of the composite wall 40, and are arranged between a pair of lower string muscles 52 when viewed from the wall thickness direction of the composite wall 40. The upper string muscles 54 and the pair of lower string muscles 52 are connected by a pair of lattice muscles 56 arranged on both sides of the upper string muscles 54.

[0036] 2, the pair of lattice reinforcement bars 56 have a wave shape in which peaks and valleys alternate in the width direction of the composite wall 40. The pair of lattice reinforcement bars 56 are joined to the upper chord reinforcement bars 54 and the lower chord reinforcement bars 52, respectively, by welding or the like.

[0037] 3, the truss bar 50 is attached to the inner wall surface 42A of the wooden wallboard 42 via a plurality of brackets 60. The brackets 60 are formed of metal plates such as steel plates. The brackets 60 are spaced apart in the longitudinal direction of the pair of lower chord bars 52 and are joined to the pair of lower chord bars 52 by welding or the like.

[0038] The bracket 60 is bent into a crank shape when viewed in the width direction of the composite wall 40. The bracket 60 has an inner flange portion 62, an outer flange portion 64, and a connection portion 66. The inner flange portion 62 faces the inner wall surface 42A of the wooden wallboard 42. The lower chord bar 52 is joined to the inner flange portion 62 by welding or the like.

[0039] An outer flange portion 64 is disposed below and outside the inner flange portion 62. The lower end of the inner flange portion 62 and the upper end of the outer flange portion 64 are connected via a connection portion 66. The outer flange portion 64 is fixed to the inner wall surface 42A of the wooden wall board 42 with a plurality of screws 68 while being overlapped on the inner wall surface 42A.

[0040] As a result, the truss reinforcement 50 is attached to the inner wall surface 42A of the wooden wallboard 42 via the multiple brackets 60. As described above, the inner flange portion 62 faces the inner wall surface 42A of the wooden wallboard 42. Therefore, the concrete 48 can easily flow between the inner flange portion 62 and the inner wall surface 42A of the wooden wallboard 42.

[0041] The shape, arrangement, and number of the brackets 60 can be changed as appropriate. Also, the brackets 60 can be omitted, and for example, a pair of lower chord bars 52 of the truss bars 50 can be joined to the inner wall surface 42A of the wooden wallboard 42 with an adhesive or the like.

[0042] (Apical cross muscle) The multiple apex cross bars 70 function as vertical wall reinforcements of the composite wall 40. The multiple apex cross bars 70 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 apex cross bars 70 are bridged across the apexes 50T of the truss reinforcements 50 adjacent in the height direction of the composite wall 40, and are joined to the apexes 50T of the truss reinforcements 50 by welding or the like.

[0043] The pair of wooden wall panels 42 are arranged with the top cross bars 70 attached to each inner wall surface 42A spaced apart in the wall thickness direction when viewed from the width direction of the composite wall 40. In this state, concrete 48 is poured between the pair of opposing wooden wall panels 42 (inner wall surfaces 42A).

[0044] (Column connection bar) As shown in Fig. 2, the column 20 and the side of the column-side composite wall 40 are connected via a plurality of column connection bars 26. For ease of explanation, in the following, of the three composite walls 40 shown in Fig. 1, the central composite wall 40 is referred to as the central composite wall 40M, and the composite walls 40 on both sides are referred to as the column-side composite walls 40S. The central composite wall 40M and the column-side composite wall 40S are collectively referred to as the composite wall 40.

[0045] 2, the multiple column connection bars 26 are arranged along the width direction of the composite wall 40, and extend between the column 20 and the side of the column-side composite wall 40S. One end of each column connection bar 26 is arranged along one end of the upper string bar 54 of the truss bar 50, and is tied to one end of the upper string bar 54 by a tie wire or the like (not shown). In addition, one end of each column connection bar 26 is embedded (anchored) in the concrete 48.

[0046] The other end of each column connection bar 26 extends from the side end of the column-side composite wall 40S into the column 20 and is embedded (anchored) in the column 20. Through these column connection bars 26, the column 20 and the side of the column-side composite wall 40S are connected so as to be able to transmit stress (shear force).

[0047] The configuration, arrangement, and number of the column connection bars 26 can be appropriately changed. Also, the column connection bars 26 may not be joined to the truss bars 50, but may be arranged after the pair of wooden wall panels 42 are installed.

[0048] (Upper beam connector) 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 connection bars 36U are arranged along the height direction of the composite wall 40 and extend between the upper beam 30U and the upper part of the composite wall 40.

[0049] The lower end of each upper beam connection bar 36U is arranged along the upper end of the top cross bar 70 and is tied to the upper end of the top cross bar 70 by a tie wire or the like (not shown). In addition, each upper beam connection bar 36U is embedded (anchored) in the concrete 48.

[0050] The upper end side of each upper beam connecting bar 36U extends from the upper end of the composite wall 40 into the upper beam 30U and is embedded (anchored) in the upper beam 30U. Through these upper beam connecting 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).

[0051] The configuration, arrangement, and number of the upper beam connecting bars 36U can be changed as appropriate. The upper beam connecting bars 36U may be arranged after the pair of wooden wall panels 42 are installed, without being attached to the top cross bars 70 in advance.

[0052] (Lower beam connector) 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 connection bars 36L are arranged along the height direction of the composite wall 40, and extend between the lower beam 30L and the lower part of the composite wall 40. The lower end side of each lower beam connection bar 36L is embedded (anchored) in the lower beam 30L.

[0053] The upper end side of each lower beam connection bar 36L extends from the upper surface of the lower beam 30L into the inside of the lower beam 30L and is arranged along the lower end side of the top cross bar 70. The upper end side of each lower beam connection bar 36L is embedded (anchored) in the concrete 48. As a result, the upper end side of the lower beam connection bar 36L and the lower end side of the top cross bar 70 are connected by a lap joint. The lower beam 30L and the lower part of the composite wall 40 are connected via these lower beam connection bars 36L so that stress (shear force) can be transmitted.

[0054] The configuration, arrangement, and number of the lower beam connecting bars 36L can be changed as appropriate. The lower beam connecting bars 36L may be arranged after the pair of wooden wall panels 42 are installed, without being attached to the top cross bars 70 in advance.

[0055] (Wall connection bars) As shown in FIG. 5 , the adjacent central composite wall 40 and the column-side composite wall 40 are connected via a plurality of wall connection bars 46 .

[0056] Specifically, multiple wall connection reinforcements 46 are arranged along the width direction of the composite wall 40, spanning the adjacent central composite wall 40M and column-side composite wall 40S.

[0057] One end of each wall connection bar 46 is arranged along one end of the upper chord bar 54 of the truss bar 50 of the central composite wall 40M and is tied to one end of the upper chord bar 54 by a tie wire or the like (not shown). In addition, one end of each wall connection bar 46 is embedded (anchored) in the concrete 48 of the central composite wall 40M.

[0058] The other end of each wall connection bar 46 extends from the side end of the central composite wall 40M into the column-side composite wall 40S and is arranged along the upper chord bars 54 of the column-side composite wall 40S. The other end of each wall connection bar 46 is embedded (anchored) in the concrete 48 of the column-side composite wall 40S. Through these wall connection bars 46, the adjacent central composite walls 40M and column-side composite walls 40S are connected so as to be able to transmit stress (shear force).

[0059] The configuration, arrangement, and number of the wall connection bars 46 can be appropriately changed. The wall connection bars 46 may be attached in advance to the truss bars 50 of the column side composite wall 40S, instead of the truss bars 50 of the central composite wall 40M.

[0060] (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 relative to the lower beam 30L. The pair of positioning members 80 are spaced apart in the wall thickness direction of the composite wall 40. When viewed from the width direction of the composite wall 40, each positioning member 80 is formed as an angle bent into an L shape.

[0061] 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. The other flange portion 80B of each positioning member 80 is raised in a wall shape from the outer end of one flange portion 80A. The lower end portions of the wooden wall panels 42 are abutted against the other flange portion 80B. This positions the lower end portions of the pair of wooden wall panels 42 relative to the lower beam 30L in the wall thickness direction.

[0062] The configuration and arrangement of the positioning member 80 can be appropriately changed. The positioning member 80 can be provided as necessary, and can be omitted as appropriate.

[0063] (How to construct composite walls) Next, an example of a method for constructing the composite wall 40 will be described.

[0064] 6 shows a lower beam 30L erected on a pair of columns 20. Note that in the columns 20 above the lower beam 30L, the column main reinforcement bars 22 and the shear reinforcement bars 24 are arranged, but the concrete has not yet been poured. Also, the upper beam 30U is in a state before construction.

[0065] First, a pair of wooden wall panels 42 that will become the column-side composite wall 40S are placed on the upper surface of the lower beam 30L facing the column 20, and are opposed to each other in the board thickness direction of the column-side composite wall 40S. At this time, as shown in Fig. 4, a plurality of lower beam connecting bars 36L protruding from the upper surface of the lower beam 30L are arranged between the pair of wooden wall panels 42.

[0066] Also, as shown by arrow a in Figure 6, a pair of wooden wall panels 42 of the column-side composite wall 40S are slid toward the column 20, and the multiple column connection bars 26 protruding from the side ends of the pair of wooden wall panels 42 are inserted between adjacent shear reinforcement bars 24.

[0067] In this state, as shown in Fig. 4, the lower ends of the pair of wooden wall panels 42 are butted against the flange portion 80B of the positioning member 80. This positions the lower ends of the pair of wooden wall panels 42 relative to the lower beam 30L. Also, restraining members 84 are temporarily placed on the outside of the lower ends of the pair of wooden wall panels 42 to restrict the opening of the lower ends of the pair of wooden wall panels 42. The restraining members 84 may be left in place without being removed.

[0068] Next, as shown by the arrow b in Fig. 6, a pair of wooden wall panels 42 that will become 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 that protrude from both side ends of the pair of wooden wall panels 42 that will become the central composite wall 40M are inserted between the pair of wooden wall panels 42 that will become the column-side composite wall 40S.

[0069] Next, as shown in Fig. 3, a formwork 38 for the upper beam 30U is temporarily set up, and the beam main reinforcement bars 32 and the shear reinforcement bars 34 are arranged inside the formwork 38. At this time, the upper ends of the upper beam connection bars 36U protruding upward from the upper ends of the pair of wooden wall panels 42 are placed between the adjacent shear reinforcement bars 34. In addition, the formwork 38 as a restraining member is abutted against the outer surfaces of the upper ends of the pair of wooden wall panels 42. This formwork 38 restricts the opening of the upper ends of the pair of wooden wall panels 42.

[0070] Next, concrete 48 is poured between the pair of wooden wall panels 42 that will become the column-side composite wall 40S and the central composite wall 40M. At this time, the joints between the adjacent column-side composite wall 40S and the central composite wall are sealed with formwork or the like (not shown). Concrete is also poured into the formwork 38 for the pair of columns 20 and upper beams 30U. In this way, the frame 10, the column-side composite wall 40S, and the central composite wall 40M are constructed as a single unit.

[0071] The construction method of the composite wall 40 is not limited to the above-mentioned method, and can be modified as appropriate.

[0072] (action) Next, the operation of this embodiment will be described.

[0073] As shown in Figures 3 and 4, according to this embodiment, a pair of wooden wall panels 42 are arranged in the frame 10 facing each other. Furthermore, prefabricated wall reinforcement bars 44 are attached to the inner wall surfaces 42A of each of the pair of wooden wall panels 42. Concrete 48 is poured between the pair of wooden wall panels 42. This allows the composite wall 40 to function as a seismic wall. Furthermore, the sound insulation of the composite wall 40 is improved.

[0074] 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, there is no need to remove the formwork.

[0075] Furthermore, the wooden wall boards 42 have superior design properties compared to steel plates, etc. Therefore, by forming the outer surface of the composite wall 40 with the wooden wall boards 42, the design properties of the composite wall 40 are improved.

[0076] In this manner, in this embodiment, the design of the composite wall 40 can be improved while eliminating the need to remove formwork.

[0077] In addition, by covering the surface of the concrete 48 with the pair of wooden wall panels 42, there is no need for reinforcing bars to suppress cracks on the surface of the concrete 48. Therefore, the cost of the composite wall 40 can be reduced.

[0078] Furthermore, prefabricated wall reinforcement bars 44 are attached to the inner wall surfaces 42A of the pair of wooden wall panels 42. This reduces the labor required for arranging the wall reinforcement bars on-site. Therefore, the workability of the composite wall 40 is improved.

[0079] Furthermore, by attaching the prefabricated 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 increased. This prevents the pair of wooden wall boards 42 from bending outward when concrete 48 is poured between the pair of wooden wall boards 42. Therefore, the number of separators that limit the gap between the pair of wooden wall boards 42 when pouring the concrete 48 can be reduced, or separators can be omitted.

[0080] In particular, by forming the pair of wooden wall panels 42 from CLT, which has 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 wall panels 42 from CLT, the earthquake resistance of the composite wall 40 is improved.

[0081] Furthermore, the assembled wall reinforcement 44 has a plurality of truss reinforcement bars 50 and a plurality of top cross reinforcement bars 70 that are bridged across the tops 50T of the adjacent truss reinforcement bars 50, and is attached to the inner wall surfaces 42A of a pair of wooden wall panels 42. The pair of wooden wall panels 42 are arranged with the top cross reinforcement bars 70 spaced apart in the wall thickness direction (arrow Y direction).

[0082] By separating the top cross reinforcements 70 of a pair of wooden wallboards 42 in the wall thickness direction in this manner, the top cross reinforcements 70 can be arranged as vertical wall reinforcements at predetermined positions in the wall thickness direction.

[0083] In addition, the wall thickness of the composite wall 40 can be adjusted by increasing or decreasing the interval between the pair of wooden wall boards 42. Therefore, the versatility of the pair of wooden wall boards 42 is improved.

[0084] (Modification) Next, a modification of the above embodiment will be described.

[0085] In the above embodiment, the apex cross bar 70 that crosses the truss bar 50 is provided at the apex 50T of the truss bar 50. However, the cross bar that crosses the truss bar 50 is not limited to the apex 50T of the truss bar 50, and may be provided in the middle of the truss bar 50.

[0086] For example, in the modified example shown in Figures 7 and 8, a plurality of intermediate cross reinforcements 90 are laid across the intermediate portions 50M in the protruding direction of adjacent truss reinforcements 50. The intermediate cross reinforcements 90 function as vertical wall reinforcements of the composite wall 40. These intermediate cross reinforcements 90 penetrate the intermediate portions 50M of the multiple 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.

[0087] Each of the intermediate cross reinforcements 90 is joined by welding or the like to a pair of intermediate reinforcements 58 provided at the intermediate portion 50M of the truss reinforcement 50. The pair of intermediate reinforcements 58 each extend in the 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. The assembled 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.

[0088] As shown in Fig. 7, the pair of wooden wall panels 42 are arranged in such a manner 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 viewed from the width direction of the composite wall 40. The pair of wooden wall panels 42 are also arranged in such a manner that the top 50T of one truss bar 50 is in contact with the middle cross bar 90 of the other truss bar 50. This positions the pair of wooden wall panels 42 in the wall thickness direction. As a result, the interval between the pair of wooden wall panels 42 is set to a predetermined value. In this state, concrete 48 is poured between the pair of opposing wooden wall panels 42.

[0089] In this way, the truss reinforcement bars 50 of the pair of wooden wall panels 42 are arranged alternately in the height direction of the composite wall 40, thereby increasing the out-of-plane rigidity of the pair of wooden wall panels 42. Therefore, when pouring concrete 48 between the pair of wooden wall panels 42, the number of separators that limit the gap between the pair of wooden wall panels 42 can be further reduced, or the separators can be omitted.

[0090] In addition, for example, when one of the wooden wall panels 42 is opposed to another, the top 50T of one of the truss bars 50 is brought into contact with the middle cross bar 90 of the other truss bar 50, thereby positioning the pair of wooden wall panels 42 in the wall thickness direction. Therefore, the workability of the pair of wooden wall panels 42 is improved.

[0091] In this example, in a pair of wooden wallboards 42, the top 50T of one truss bar 50 is in contact with the middle cross bar 90 of the other truss bar 50. However, in a pair of wooden wallboards 42, the top 50T of one truss bar 50 and the middle cross bar 90 of the other truss bar 50 do not necessarily need to be in contact, and there may be a gap between the top 50T of one truss bar 50 and the middle cross bar 90 of the other truss bar 50.

[0092] Next, in the above embodiment, the assembled wall reinforcement 44 has the truss reinforcement 50 and the top cross reinforcement 70. However, the assembled wall reinforcement 44 is not limited to the truss reinforcement 50 and the top cross reinforcement 70.

[0093] For example, in the modified example shown in Figures 9, 10, and 11, the prefabricated wall reinforcement 100 has a plurality of horizontal wall reinforcement 102 and a plurality of vertical wall reinforcement 104. As shown in Figure 9, the prefabricated wall reinforcement 100 is attached to the inner wall surface 42A of the wooden wallboard 42 via a plurality of brackets 110, which will be described later.

[0094] 10, the multiple horizontal wall reinforcements 102 extend in the width direction of the composite wall 40 and are arranged at intervals in the height direction of the composite wall 40. On the other hand, the multiple 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 lattice pattern when viewed from the thickness direction of the composite wall 40.

[0095] The horizontal wall reinforcement 102 and the vertical wall reinforcement 104 are joined at their intersections by means of a tie wire, welding, or the like (not shown). 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 wallboard 42 via brackets 110.

[0096] As shown in Fig. 11, the bracket 110 is formed of a hat-shaped steel. The 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 a plan view, with the opening on the center side of the composite wall 40. The pair of flanges 114 are provided on the end of the bracket body 112 on the opening side.

[0097] The pair of flanges 114 each extend outward from the end on the opening side of the bracket body 112. The horizontal wall reinforcement bars 102 are joined by welding or the like to the pair of flanges 114. In addition, a wall portion (base portion) 112A on the opposite side to the opening of the bracket body 112 is fixed to the inner wall surface 42A of the wooden wall panel 42 with a screw 120.

[0098] In this manner, in this modification, the prefabricated wall reinforcement 100 is attached to the inner wall surface 42A of the wooden wall panel 42 via a plurality of brackets (hat-shaped steel) 110. This allows the wall thickness of the composite wall 40 to be thin, while simplifying the structure of the prefabricated wall reinforcement 100.

[0099] The number, arrangement, and orientation of the brackets 110 are not limited to those described above, and can be changed as appropriate.

[0100] 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 as necessary.

[0101] In the above embodiment, the truss reinforcement 50 of a pair of wooden wall panels 42 are arranged side by side in the height direction of the composite wall 40. However, the truss reinforcement 50 may be arranged side by side in the width direction of the composite wall 40. In this case, the upper chord reinforcement 54 of the truss reinforcement 50 functions as the vertical wall reinforcement of the composite wall 40, and the top cross reinforcement 70 functions as the horizontal wall reinforcement of the composite wall 40. The width direction of the composite wall 40 is also an example of a predetermined direction.

[0102] In addition, the assembled 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 the configuration can be changed as appropriate.

[0103] In the above embodiment, the composite wall 40 is joined to the column 20. However, the composite wall 40 does not necessarily have to be joined to the column 20. In addition, an opening can be provided between the composite wall 40 and the column 20 as necessary.

[0104] 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 modified examples may be used in appropriate combination, and it is of course possible to implement the present invention in various forms without departing from the gist of the present invention. [Explanation of symbols]

[0105] 10 Frame 40 Composite wall 42 Wooden wallboard 42A Inner wall 44 Assembly wall reinforcement 48 Concrete 50 Truss 50T Top (Top of truss bar) 50M Middle section (middle section of truss bar) 70 Apical cross muscle 90 Intermediate cross muscle 100 Assembly wall reinforcement Arrow Z: Height direction of composite wall (predetermined direction)

Claims

1. A pair of wooden wall panels are arranged in a frame in a state facing each other, and a prefabricated wall reinforcement is attached to each of the inner wall surfaces of the pair of wooden wall panels; Concrete poured between the pair of wooden wall panels; Equipped with The assembled wall reinforcement is A plurality of truss reinforcements extending in the width direction of the wooden wall board and arranged at intervals in the height direction of the wooden wall board; A plurality of top cross bars extending in the height direction of the wooden wall board and arranged at intervals in the width direction of the wooden wall board and spanning the tops of the adjacent truss bars; having composite wall.

2. The pair of wooden wall panels are arranged with the top cross bars of each panel spaced apart in the wall thickness direction. The composite wall of claim 1.

3. The pair of wooden wall panels are arranged with the truss bars alternately arranged in the height direction of the wooden wall panels. The composite wall of claim 1.

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