Intersection-portion structure of building wall

Abstract

Provided is an intersection-portion structure of a building wall excellent in both sound insulation property and seismic resistance property. Provided is an intersection-portion structure 100 of a building wall, the intersection-portion structure 100 comprising an intersection portion 70 at which a first wall 30 and a second wall 60 intersect with each other in a T shape in a plan view. In a second corner portion 72 of the intersection portion 70, a first B stud 20B to which a second surface material 10B is attached is not arranged and a second A stud 50A to which a third surface material 40A is attached is arranged. In the second corner portion 72, a reinforcement plate 80 spans both of an inside surface of the second surface material 10B and the second A stud 50A and is fixed to both of the second surface material 10B and the second A stud 50A.

Description

Building wall intersection structure

[0001] The present disclosure relates to building wall intersection structures.

[0002] Dry partition walls, including parting walls, are formed by attaching multiple studs (or partition posts) to a pair of upper and lower runners at intervals along the length of the runners, and then attaching a surface material such as gypsum board to both sides of each stud. The partition wall separates two living rooms, etc.

[0003] In a double-sided construction in which face plates are attached to both sides of each stud constituting a dry partition wall, the formation of so-called sound bridges can easily cause sound to propagate (leak) from one room to another, resulting in a partition wall with poor sound insulation. Therefore, to improve sound insulation performance, a single-sided construction may be applied in which adjacent studs are arranged in a staggered pattern and a face plate is attached to one side of each stud, an example of which is proposed in Patent Document 1. The sound-insulating partition wall disclosed in Patent Document 1 is formed by fastening two layers of wall boards to the studs and filling the hollow space between the wall boards with sound-insulating material. One wall board surface abuts against one side of the stud, and a gap is provided between the other side of the stud and the other wall board surface. The studs are arranged in a staggered pattern between the wall boards, and sound-insulating material is filled in the gaps between the hollow space and the studs and wall boards.

[0004] Japanese Utility Model Application Laid-Open Publication No. 5-47123

[0005] An example of a partition wall structure in which a surface material is attached to one side of a stud, such as the partition wall described in Patent Document 1, is shown in Figure 1. Here, Figure 1 is a cross-sectional view of an example of a conventional partition wall. The illustrated example focuses on an intersection 70 where a first wall 30, which is a partition wall, and a second wall 60, which is a partition wall or an exterior wall, intersect in a T-shape in plan view.

[0006] The first wall 30 has a plurality of first-A studs 20A and a plurality of first-B studs 20B spaced apart along its horizontal length in a staggered arrangement, with the studs alternately offset in a direction perpendicular to the horizontal length. A first panel 10A is attached to one side of the plurality of first-A studs 20A, and a second panel 10B is attached to one side of the plurality of first-B studs 20B. The first panel 10A is a stack of a subfloor 11A formed by a plurality of underlayment panels and a top panel 12A formed by a plurality of top panel panels, one of which is arranged horizontally and the other is arranged vertically. Similarly, the second panel 10B is a stack of a subfloor 11B formed by a plurality of underlayment panels and a top panel 12B formed by a plurality of top panel panels, one of which is arranged horizontally and the other is arranged vertically. The underlayments 11A, 11B are both fastened to the corresponding studs 20A, 20B with fasteners 25 such as screws, and the toplays 12A, 12B are fastened to the underlayments 11A, 11B with adhesive, staples, or the like.

[0007] There is a hollow 15 inside the first wall 30, and sound insulation and heat insulation are ensured by this hollow 15. In addition, in order to further improve the sound insulation performance, there is also a form in which the hollow 15 is filled with a soundproofing material.

[0008] The second wall 60 has a plurality of second-A studs 50A and a plurality of second-B studs 50B spaced apart along its horizontal length in a staggered arrangement, with the studs alternately offset in a direction perpendicular to the horizontal length. A third panel 40A is attached to one side of the plurality of second-A studs 50A, and a fourth panel 40B is attached to one side of the plurality of second-B studs 50B. The third panel 40A is a superimposed arrangement of a subfloor 41A formed by a plurality of underlayment panels and a superimposed arrangement of a superimposed arrangement of a plurality of overlayment panels, one of which is arranged horizontally and the other is arranged vertically. Similarly, the fourth panel 40B is a superimposed arrangement of a subfloor 41B formed by a plurality of underlayment panels and a superimposed arrangement of a superimposed arrangement of a plurality of overlayment panels, one of which is arranged horizontally and the other is arranged vertically. The underlayments 41A, 41B are both fastened to the corresponding studs 50A, 50B with fasteners 25 such as screws, and the toplays 42A, 42B are fastened to the underlayments 41A, 41B with adhesive, staples, or the like.

[0009] There is a hollow 45 inside the second wall 60, and sound insulation and heat insulation are ensured by this hollow 45. In addition, in order to further improve the sound insulation performance, there is also a form in which the hollow 45 is filled with a soundproofing material.

[0010] At an intersection 70 where the first wall 30 and the second wall 60 intersect in a T-shape in plan view, an intersection structure 90 of the building wall is formed, and a first corner 71 and a second corner 72 of the two inside corners of the intersection 70 face the two living rooms R1 and R2, respectively. In the intersection structure 90, a longitudinal (vertical) slit 55 is provided at the intersection 70 to prevent sound from propagating through the underlay 41A of the third panel 40A that constitutes the second wall 60.

[0011] In this way, the partition wall 30 has a configuration in which no face material is attached to either side of the firstA studs 20A and firstB studs 20B that make up the first wall 30, and furthermore, the underlayment 41A of the third face material 40A that makes up the second wall 60 has vertical slits 55 at the intersection 70, thereby improving the sound insulation performance of the partition wall 30. However, on the other hand, at the second corner 72, there are no studs supporting the second face material 10B, so a structural weak point W may be formed. As a result of the formation of the structural weak point W at part of the intersection 70, there is a concern that cracks or other damage may occur at or around the structural weak point W when the building is displaced due to an earthquake or other cause, resulting in a problem of an intersection structure with low seismic performance.

[0012] The present disclosure provides a building wall intersection structure that is both excellent in sound insulation and earthquake resistance.

[0013] An intersection structure of a building wall according to one aspect of the present disclosure is an intersection structure of a building wall having an intersection where a first wall and a second wall intersect in a T-shape in plan view, wherein the first wall comprises a plurality of first A studs and first B studs alternately spaced apart in the horizontal longitudinal direction, and is formed by a first face material attached to one side of the plurality of first A studs and a second face material attached to one side of the plurality of first B studs, the second wall comprises a plurality of second A studs and second B studs alternately spaced apart in the horizontal longitudinal direction, and is formed by a third face material attached to one side of the plurality of second A studs and a fourth face material attached to one side of the plurality of second B studs, and the first A stud to which the first face material is attached is located at a first corner of one of two corners of the intersection, and the second A stud to which the third face material is attached is located at a first corner of one of two corners of the intersection, At the other second corner of the two corners of the intersection, the first B stud to which the second panel is attached is not positioned, but the second A stud to which the third panel is attached is positioned, and at the second corner, a reinforcing plate straddles both the inner surface of the second panel and the second A stud, and the reinforcing plate is fixed to both the second panel and the second A stud.

[0014] Another aspect of the present disclosure provides an intersection structure for a building wall, comprising: an intersection structure for a building wall having a first wall and a second wall intersecting in a cross shape in plan view; wherein the first wall comprises a plurality of first A studs and first B studs alternately spaced apart in the horizontal longitudinal direction, and is formed by a first face material attached to one side of the plurality of first A studs and a second face material attached to one side of the plurality of first B studs; the second wall comprises a plurality of second A studs and second B studs alternately spaced apart in the horizontal longitudinal direction, and is formed by a third face material attached to one side of the plurality of second A studs and a fourth face material attached to one side of the plurality of second B studs; and at a first corner of the four corners of the intersection, the first A stud to which the first face material is attached is located, and the second A stud to which the third face material is attached is not located; At a second corner out of the four corners of the intersection, the first B stud to which the second panel is attached is not arranged, and the second A stud to which the third panel is attached is arranged; At a third corner out of the four corners of the intersection, the second B stud to which the fourth panel is attached is arranged, and the first A stud to which the first panel is attached is not arranged; At a fourth corner out of the four corners of the intersection, the first B stud to which the second panel is attached is arranged, and the second B stud to which the fourth panel is attached is not arranged; At the first corner, a reinforcing plate straddles both the inner surface of the third panel and the first A stud, and is fixed to both the third panel and the first A stud; At the second corner, a reinforcing plate straddles both the inner surface of the second panel and the second A stud, and is fixed to both the second panel and the second A stud; At the third corner, a reinforcing plate straddles both the inner surface of the first panel and the second B stud, and is fixed to both the first panel and the second B stud; at the fourth corner, a reinforcing plate straddles both the inner surface of the fourth panel and the first B stud, and is fixed to both the fourth panel and the first B stud.

[0015] According to the present disclosure, it is possible to provide a building wall intersection structure that is excellent in both sound insulation and earthquake resistance.

[0016] FIG. 1 is a cross-sectional view of an example of a conventional building wall intersection structure (Comparative Example 1); FIG. 2 is a cross-sectional view of an example of a building wall intersection structure related to the first embodiment; FIG. 3 is a cross-sectional view of another example of a building wall intersection structure related to the first embodiment; FIG. 4 is a cross-sectional view of another example of a building wall intersection structure related to the second embodiment; FIG. 5 is a cross-sectional view of another example of a building wall intersection structure related to the third embodiment; FIG. 6 is a cross-sectional view of a modified example of a building wall intersection structure related to the third embodiment; FIG. 7 is a cross-sectional view of another example of a conventional building wall intersection structure (Comparative Example 2); FIG. 8 is a cross-sectional view of yet another example of a conventional building wall intersection structure (Comparative Example 3).

[0017] Hereinafter, the intersection structure of building walls according to each embodiment will be described with reference to the accompanying drawings. Note that in this specification and the drawings, substantially identical components may be designated by the same reference numerals to avoid redundant description.

[0018] [Intersection structure of building wall according to first embodiment] First, an example of an intersection structure of a building wall according to the first embodiment will be described with reference to Fig. 2 and Fig. 3. Here, Fig. 2 is a cross-sectional view of an example of the intersection structure of a building wall according to the first embodiment, and Fig. 3 is a cross-sectional view of another example of the intersection structure of a building wall according to the first embodiment.

[0019] The intersection structure of the building walls in the illustrated example is a double-panel wall with each wall having two layers of underlay and overlay, but each wall may also be a wall with three or more panels overlaid on both sides, or a wall with one panel (one layer) attached to both sides.

[0020] The building wall intersection structure 100 shown in FIG. 2 is applicable to steel-framed buildings, RC (Reinforced Concrete) buildings, wooden buildings, etc., and these buildings include general detached houses, apartment complexes, factories, warehouses, etc.

[0021] The intersection structure 100 has an intersection 70 where a first wall 30 and a second wall 60 intersect in a T-shape in plan view.

[0022] Both the first wall 30 and the second wall 60 have lower runners (or floor runners) and upper runners (or ceiling runners) (not shown) that extend laterally (horizontally), and the upper and lower ends of studs 20A, 20B, 50A, 50B that extend vertically (vertically) are attached to the upper and lower runners. Both the upper and lower runners are formed from lightweight steel frame material such as channel steel, and the upper runner is attached to an upper floor structure (not shown) with its opening facing downward, and the lower runner is attached to a lower floor structure (not shown) with its opening facing upward.

[0023] The studs 20A, 20B, 50A, 50B are formed from lipped channel steel of light-gauge steel frame, but may also be formed from channel steel or square steel pipe. Here, a plurality of horizontally extending sway rests (not shown) may be provided at a predetermined pitch (for example, 1200 mm pitch) in the height direction of the studs 20A, 20B, 50A, 50B.

[0024] The upper runner, lower runner, and studs 20A, 20B, 50A, 50B are, for example, lightweight steel frames with a thickness of 0.4 mm or more, and steel runners and steel studs specified in JIS A 6517 ("Steel base materials for construction"), or equivalent, compliant, or compatible products, can be used. In the first wall 30 and the second wall 60, multiple studs 20A, 20B, 50A, 50B are erected between the lower runner and upper runner in the horizontal longitudinal direction of the wall at intervals of 606 mm or less (for example, intervals of 606 mm or 455 mm). Furthermore, the studs 20A, 20B, 50A, and 50B in the illustrated example may be 65 type (65 mm x 45 mm x 0.8 mm) or 75 type (75 mm x 45 mm x 0.8 mm), or alternatively, 50 type (50 mm x 45 mm x 0.8 mm), 90 type (90 mm x 45 mm x 0.8 mm), or 100 type (100 mm x 45 mm x 0.8 mm) may also be used.

[0025] The first wall 30 has a plurality of first-A studs 20A and a plurality of first-B studs 20B spaced apart along its horizontal length in a staggered arrangement, with the studs alternately offset in a direction perpendicular to the horizontal length. A first panel 10A is attached to one side of the plurality of first-A studs 20A, and a second panel 10B is attached to one side of the plurality of first-B studs 20B. The first panel 10A is a stack of a subfloor 11A formed by a plurality of underlayment panels and a top panel 12A formed by a plurality of top panel panels, one of which is arranged horizontally and the other is arranged vertically. Similarly, the second panel 10B is a stack of a subfloor 11B formed by a plurality of underlayment panels and a top panel 12B formed by a plurality of top panel panels, one of which is arranged horizontally and the other is arranged vertically. The underlayments 11A and 11B are fastened to the studs 20A and 20B with fasteners 25 such as screws, and the toplays 12A and 12B are fastened to the underlayments 11A and 11B with adhesive, staples, or the like.

[0026] The first wall 30 has a hollow 15 therein, which ensures sound insulation and heat insulation. To further improve the sound insulation performance, the hollow 15 may be filled with a soundproofing material (including a sound-absorbing material and a sound-insulating material) such as glass wool or rock wool.

[0027] The second wall 60 has a plurality of second-A studs 50A and a plurality of second-B studs 50B spaced apart along its horizontal length in a staggered arrangement, with the studs alternately offset in a direction perpendicular to the horizontal length. A third panel 40A is attached to one side of the plurality of second-A studs 50A, and a fourth panel 40B is attached to one side of the plurality of second-B studs 50B. The third panel 40A is a superimposed arrangement of a subfloor 41A formed by a plurality of underlayment panels and a superimposed arrangement of a superimposed arrangement of a plurality of overlayment panels, one of which is arranged horizontally and the other is arranged vertically. Similarly, the fourth panel 40B is a superimposed arrangement of a subfloor 41B formed by a plurality of underlayment panels and a superimposed arrangement of a superimposed arrangement of a plurality of overlayment panels, one of which is arranged horizontally and the other is arranged vertically. The underlayments 41A and 41B are attached to the studs 50A and 50B with fasteners 25 such as screws, and the toplays 42A and 42B are fastened to the underlayments 41A and 41B with adhesive, staples, or the like.

[0028] The second wall 60 has a hollow 45 therein, which ensures sound insulation and heat insulation. To further improve the sound insulation performance, the hollow 45 may be filled with a soundproofing material such as glass wool or rock wool.

[0029] At an intersection 70 where the first wall 30 and the second wall 60 intersect in a T-shape in plan view, an intersection structure 100 is formed, with a first corner 71 and a second corner 72 of the intersection 70 facing the two living rooms R1 and R2, respectively. In the intersection structure 100, a wide slit 56 extending in the longitudinal direction (vertical direction) is provided at the intersection 70 to prevent sound from propagating through the underlay 41A of the third panel 40A that constitutes the second wall 60.

[0030] The underlayment surface materials that form the underlayments 11A, 11B, 41A, and 41B include gypsum board, gypsum board, calcium silicate board, particle board, hardboard, plywood, structural plywood, etc., and among these, gypsum board and gypsum board are preferably used.

[0031] On the other hand, the surface materials forming the coverings 12A, 12B, 42A, 42B are made of gypsum board, gypsum board, calcium silicate board, etc., with gypsum board and gypsum board being particularly preferred.

[0032] Gypsum boards include general gypsum boards, reinforced gypsum boards, ordinary hard gypsum boards, sheathing hard gypsum boards, moisture-absorbing and desorbing reinforced gypsum boards, moisture-absorbing and desorbing ordinary gypsum boards, moisture-absorbing and desorbing hard gypsum boards, glass fiber nonwoven fabric-reinforced gypsum boards, glass mat gypsum boards, etc.

[0033] For example, when gypsum board is used, its short sides, long sides, and thickness are 910 mm x 1820 mm x 9.5 mm, made of semi-non-combustible material, or 910 mm x 1820 mm (2420 mm, 2730 mm) x 12.5 mm (15 mm, 21 mm, 25 mm), made of non-combustible material, and the width of the gypsum board is not limited to 910 mm, but also includes 606 mm, 1000 mm, 1220 mm, etc.

[0034] The first wall 30 is a partition wall that separates the living spaces R1 and R2. On the other hand, the second wall 60 may be a separate partition wall that forms the living spaces R1 and R2 together with the first wall 30, or may be an exterior wall.

[0035] In this way, the first wall 30 has a configuration in which no surface material is attached to either side of the first A stud 20A and the first B stud 20B, and further, the underlay 41A of the third surface material 40A that constitutes the second wall 60 has a vertical slit 56 at the intersection 70, thereby improving the soundproofing performance of the partition wall 30.

[0036] Furthermore, unlike the intersection structure 90 shown in Figure 1, in order to prevent the formation of a structural weak point W at the second corner 72, at the second corner 72 where the second panel 10B is not supported by the first B stud 20B, a flat reinforcing plate 80 (an example of a reinforcing plate) spans both the inner surface of the second panel 10B and the second A stud 50A that forms the second wall 60, and is fixed to both the second panel 10B and the second A stud 50A with fasteners 28 such as screws.

[0037] The flat reinforcing plate 80 is applied in the form of a single long plate having the vertical length of the second panel 10B and the second-A studs 50A, and is fixed to each of the second panel 10B and the second-A studs 50A at predetermined intervals in the vertical direction by a plurality of fasteners 28. Alternatively, the flat reinforcing plate 80 may be applied in the form of a plurality of relatively short plates, and a plurality of flat reinforcing plates 80 may be intermittently arranged and fixed to each of the second panel 10B and the second-A studs 50A.

[0038] Furthermore, as shown in the illustrated example, the fastening positions of the fasteners 28 to the second face material 10B and the second-A studs 50A of the flat reinforcing plate 80 are preferably located as close to the second corner 72 as possible, thereby shortening the distance to each fastener 28 when the second corner 72 is used as a fulcrum, and reducing the pull-out force due to the bending moment that may act on each fastener 28. From the perspective of ensuring good fastening performance while being as close as possible to the second corner 72, the fastening positions by the fasteners 28 can be located approximately 10 to 15 mm away from the second corner 72.

[0039] According to the intersection structure 100 of the building wall, the second corner 72 where the second face material 10B is not supported by the first B stud 20B is reinforced by a flat reinforcing plate 80, resulting in an intersection structure that is excellent in both sound insulation and earthquake resistance.

[0040] Although not shown, the flat reinforcing plate 80 may be fixed to both the second-A studs 50A and the first-B studs 20B with fasteners 28. Furthermore, stoppers may be attached to the upper and lower runners (not shown) to restrict movement of the flat reinforcing plate 80. The flat reinforcing plate 80 may also be sandwiched between the upper and lower runners (not shown) and spacers attached to the upper and lower runners. Furthermore, by abutting the end face of the underlayment face material 11B against the second-A studs 50A without using the underlayment face material 41A, the fastening position of the fasteners 28 that fasten the flat reinforcing plate 80 to the underlayment face material 11B may be positioned even closer to the second-A studs 50A.

[0041] 3 differs from intersection structure 100 in the following respects: In first wall 30, first-A studs 20A and first-B studs 20B are both disposed at wall core L1, and first and second panel members 10A and 10B are attached alternately via battens 21. In second wall 60, second-A studs 50A and second-B studs 50B are both disposed at wall core L2, and third and fourth panel members 40A and 40B are attached alternately via battens 51.

[0042] In the intersection structure 100A, the second corner 72 where the second face material 10B is not supported by the first B stud 20B is reinforced by a flat reinforcing plate 80, resulting in an intersection structure that is excellent in both sound insulation and earthquake resistance.

[0043] [Structure of intersection portion of building wall according to second embodiment] Next, an example of the structure of intersection portion of building wall according to the second embodiment will be described with reference to Fig. 4. Here, Fig. 4 is a cross-sectional view of another example of the structure of intersection portion of building wall according to the second embodiment.

[0044] The building wall intersection structure 100B shown in Figure 4 differs from the intersection structure 100 in that an L-shaped reinforcing plate 85 (another example of a reinforcing plate) is used instead of the flat reinforcing plate 80. The L-shaped reinforcing plate 85 may also be used in the configuration of the intersection structure 100A that includes the floor boards 21 and 51.

[0045] This L-shaped reinforcing plate 85 is fixed, for example, by attaching one piece of the L-shaped reinforcing plate 85 to one surface of the second A stud 50A in advance using double-sided tape or screws, sandwiching this piece between one surface of the second A stud 50A and the third surface material 40A, and then adhering the other piece of the L-shaped reinforcing plate 85 to the inner surface of the second surface material 10B, and attaching both pieces to the second A stud 50A and the second surface material 10B with fasteners 28 such as screws.

[0046] The L-shaped reinforcing plate 85 is a single long plate having the same vertical length as the second panel 10B and the second-A studs 50A, and is fixed to the second panel 10B and the second-A studs 50A at predetermined intervals in the vertical direction by a plurality of fasteners 28. Alternatively, the L-shaped reinforcing plate 85 may be a plurality of relatively short plates, and a plurality of L-shaped reinforcing plates 85 may be intermittently arranged and fixed to the second panel 10B and the second-A studs 50A.

[0047] Furthermore, as shown in the illustrated example, the fastening positions of the fasteners 28 to the second face material 10B and the second-A studs 50A of the L-shaped reinforcing plate 85 are preferably located as close to the second corner 72 as possible, thereby shortening the distance to each fastener 28 when the second corner 72 is used as a fulcrum, and reducing the pull-out force due to the bending moment that may act on each fastener 28. From the perspective of ensuring good fastening performance while being as close as possible to the second corner 72, the fastening positions by the fasteners 28 can be located approximately 10 to 15 mm away from the second corner 72.

[0048] In the intersection structure 100B of the building wall, the second corner 72 where the second panel 10B is not supported by the first B stud 20B is reinforced with an L-shaped reinforcing plate 85, resulting in an intersection structure that is excellent in both sound insulation and earthquake resistance.

[0049] Although not shown, the L-shaped reinforcing plate 85 may be secured to both the second-A studs 50A and the first-B studs 20B with fasteners 28. Furthermore, stoppers may be attached to the upper and lower runners (not shown) to restrict movement of the L-shaped reinforcing plate 85. The flat reinforcing plate 80 may also be sandwiched between the upper and lower runners (not shown) and spacers attached to the upper and lower runners. Furthermore, by abutting the end face of the underlayment surface material 11B against the second-A studs 50A without using the underlayment surface material 41A, the fasteners 28 securing the L-shaped reinforcing plate 85 to the underlayment surface material 11B may be positioned even closer to the second-A studs 50A.

[0050] [Intersection structure of building wall according to third embodiment] Next, an example of an intersection structure of a building wall according to the third embodiment will be described with reference to Fig. 5 and Fig. 6. Here, Fig. 5 is a cross-sectional view of another example of the intersection structure of a building wall according to the third embodiment, and Fig. 6 is a cross-sectional view of a modified example of the intersection structure of a building wall according to the third embodiment.

[0051] The building wall intersection structure 100C shown in Figure 5 has an intersection structure 70A where the first wall 30 and the second wall 60 intersect in a cross shape in a plan view. Because the intersection 70A has a cross shape, it has four corners (inner corners) including a first corner 71 and a second corner 72, as well as a third corner 73 and a fourth corner 74. Furthermore, the intersection 70A has four wide slits 56 extending in the vertical direction.

[0052] The first wall 30 and the second wall 60 are both partition walls, and four living rooms R1, R2, R3, and R4 are formed around the intersection structure 100C, with the intersection 70A at the center, by the first wall 30 and the second wall 60.

[0053] In the intersection structure 100C, the first A stud 20A to which the first panel 10A is attached is disposed at the first corner 71, but the second A stud 50A to which the third panel 40A is attached is not disposed at the first corner 71. Therefore, a structurally weak portion is formed in the third panel 40A at the first corner 71.

[0054] On the other hand, at the second corner 72, the first B stud 20B to which the second face material 10B is attached is not arranged, but the second A stud 50A to which the third face material 40A is attached is arranged. Therefore, a structurally weak portion is formed in the second face material 10B at the second corner 72.

[0055] On the other hand, the second B stud 50B to which the fourth panel 40B is attached is disposed at the third corner 73, but the first A stud 20A to which the first panel 10A is attached is not disposed at the third corner 73. Therefore, a structurally weak portion is formed in the first panel 10A at the third corner 73.

[0056] Furthermore, the first B stud 20B to which the second panel 10B is attached is located at the fourth corner 74, but the second B stud 50B to which the fourth panel 40B is attached is not located at the fourth corner 74. Therefore, a structurally weak portion is formed in the fourth panel 40B at the fourth corner 74.

[0057] Therefore, in order to prevent the formation of structurally weak parts at the intersection 70A, L-shaped reinforcing plates 85 are applied to each of the first corner 71 to the fourth corner 74, and the L-shaped reinforcing plates 85 are fixed to the corresponding studs and the inner surfaces of the panel using fasteners 28 such as screws.

[0058] According to the building wall intersection structure 100C, even in a configuration having an intersection 70A that is cross-shaped when viewed from above, the four corners 71 to 74 where the surface material is not supported by studs are reinforced with L-shaped reinforcing plates 85, resulting in an intersection structure that is excellent in both sound insulation and earthquake resistance.

[0059] On the other hand, the intersection structure 100D of the building wall shown in Figure 6 is an intersection structure having an intersection 70A that intersects in a cross shape when viewed from above, in which a flat reinforcing plate 80 is applied instead of the L-shaped reinforcing plate 85, as in the intersection structures 100 and 100A.

[0060] When the building wall intersection structure 100D has an intersection 70A that is cross-shaped when viewed from above, the areas at the four corners 71 to 74 where the surface material is not supported by studs are reinforced with flat reinforcing plates 80, resulting in an intersection structure that is excellent in both sound insulation and earthquake resistance.

[0061] [Consideration on the performance of the intersection structure of a building wall] Next, the performance of the intersection structure of a building wall according to the embodiment (Example) will be described in comparison with a conventional intersection structure of a building wall (Comparative Example). Here, the intersection structure 90 shown in Fig. 1, which is a conventional intersection structure, is designated Comparative Example 1, and as other comparative examples, the intersection structure 90A shown in Fig. 7 is designated Comparative Example 2, and the intersection structure 90B shown in Fig. 8 is designated Comparative Example 3. Meanwhile, the intersection structure 100 shown in Fig. 2 is designated Example 1, the intersection structure 100A shown in Fig. 3 is designated Example 2, and the intersection structure 100B shown in Fig. 4 is designated Example 3.

[0062] 7 shows an intersection structure 90A of Comparative Example 2 in which the first panel 10A and the second panel 10B are fixed to both sides of a common stud 20C at the intersection 70. Therefore, in the intersection structure 90A, no structural weakness is formed at the intersection 70. On the other hand, although a vertical slit 55 exists, the stud 20C can form a sound bridge between the living rooms R1 and R2.

[0063] On the other hand, in the intersection structure 90B of Comparative Example 3 shown in Figure 8, the first panel 10A and the second panel 10B are fixed to both sides of a common stud 20C at the intersection 70, and in addition, there is no vertical slit 55, and the third panel 40A and the fourth panel 40B are also fixed to a common stud 50C. Therefore, in the intersection structure 90B, no structural weakness is formed at the intersection 70. On the other hand, the stud 20C and the underlayment panel 41A can form a sound bridge between the living rooms R1 and R2.

[0064] Comparative Example 3 is a T-shaped intersection that has been known for a long time, Comparative Example 2 is an improved structure that can reduce sound bridging compared to Comparative Example 3, and Comparative Example 1 is an improved structure that can reduce sound bridging even more than Comparative Example 2.

[0065] The sound insulation performance and earthquake resistance performance of each of the above Examples 1 to 3 and Comparative Examples 1 to 3 are shown in Table 1 below. In Table 1, "○" in sound insulation performance means good, "△" means not good but suitable, and "×" means unsuitable. In addition, "○" in earthquake resistance performance means high performance, and "×" means low performance.

[0066]

[0067] As described above, the sound insulation performance improves in the order of Comparative Example 3, Comparative Example 2, and Comparative Example 1. While Comparative Example 1 has good sound insulation performance, it has poor earthquake resistance performance due to the presence of a structural weak point at the intersection 70.

[0068] In comparison with Comparative Examples 1 to 3, Examples 1 to 3 all have intersection structures that are excellent in both sound insulation performance and earthquake resistance performance.

[0069] It should be noted that other embodiments may be possible in which other components are combined with the configurations described in the above embodiments, and the present disclosure is not limited to the configurations shown here. In this regard, modifications are possible within the scope of the present disclosure, and can be appropriately determined depending on the application form.

[0070] This international application claims priority based on Japanese Patent Application No. 2022-138307, filed on August 31, 2022, the entire contents of which are incorporated herein by reference.

[0071] 10A: First surface material 10B: Second surface material 11A: Underlayment surface material 12A: Top surface material 11B: Underlayment surface material 12B: Top surface material 15: Hollow 20A: First A stud (stud) 20B: First B stud (stud) 21: Lamber board 25: Fastener (screw) 28: Fastener (screw) 30: First wall 40A: Third surface material 40B: Fourth surface material 41A: Underlayment surface material 42A: Top surface material 41B: Underlayment surface material 42B: Top surface material 45: Hollow 50A: Second A stud (stud) 50B: Second B stud (stud) 56: Slit 60: Second wall 70, 70A: Intersection 71: First corner (corner) 72: Second corner (corner) 73: Third corner (corner) 74: Fourth corner (corner) 80: Flat reinforcing plate (reinforcing plate) 85: L-shaped reinforcing plate (reinforcing plate) 100, 100A, 100B, 100C, 100D: Intersection structure of building wall (intersection structure) L1, L2: Wall core

Claims

1. A building wall intersection structure having an intersection where a first wall and a second wall intersect in a T-shape in plan view, the first wall is formed by a plurality of alternating first A studs and first B studs spaced apart along a horizontal length of the first wall, a first face material attached to one side of the first A studs, and a second face material attached to one side of the first B studs; the second wall is formed by a plurality of alternating second A studs and second B studs spaced apart along a horizontal length of the second wall, a third face material attached to one side of the second A studs, and a fourth face material attached to one side of the second B studs; The first A stud to which the first face material is attached is disposed at a first corner of the two corners of the intersection, and the second A stud to which the third face material is attached is disposed at the first corner, At the other second corner of the two corners of the intersection, the first B stud to which the second face material is attached is not disposed, and the second A stud to which the third face material is attached is disposed; An intersection structure of a building wall, wherein at the second corner portion, a reinforcing plate spans both the inner surface of the second panel and the second A stud, and the reinforcing plate is fixed to both the second panel and the second A stud.

2. A building wall intersection structure having an intersection where a first wall and a second wall intersect in a cross shape in a plan view, the first wall is formed by a plurality of alternating first A studs and first B studs spaced apart along a horizontal length of the first wall, a first face material attached to one side of the first A studs, and a second face material attached to one side of the first B studs; the second wall is formed by a plurality of alternating second A studs and second B studs spaced apart along a horizontal length of the second wall, a third face material attached to one side of the second A studs, and a fourth face material attached to one side of the second B studs; At a first corner of the four corners of the intersection, the first A stud to which the first face material is attached is disposed, and the second A stud to which the third face material is attached is not disposed; At a second corner of the four corners of the intersection, the first B stud to which the second face material is attached is not disposed, and the second A stud to which the third face material is attached is disposed; At a third corner of the four corners of the intersection, the second B stud to which the fourth face material is attached is disposed, and the first A stud to which the first face material is attached is not disposed; At a fourth corner of the four corners of the intersection, the first B stud to which the second face material is attached is disposed, and the second B stud to which the fourth face material is attached is not disposed; At the first corner portion, a reinforcing plate straddles both the inner surface of the third panel and the first A stud, and the reinforcing plate is fixed to both the third panel and the first A stud; At the second corner portion, a reinforcing plate straddles both the inner surface of the second panel and the second A stud, and the reinforcing plate is fixed to both the second panel and the second A stud; At the third corner portion, a reinforcing plate straddles both the inner surface of the first panel and the second B stud, and the reinforcing plate is fixed to both the first panel and the second B stud; An intersection structure of a building wall, wherein at the fourth corner portion, a reinforcing plate straddles both the inner surface of the fourth panel and the first B stud, and the reinforcing plate is fixed to both the fourth panel and the first B stud.

3. The intersection structure of building walls according to claim 1 or 2, wherein the reinforcing plate is a flat reinforcing plate.

4. The intersection structure of a building wall according to claim 1 or 2, wherein the reinforcing plate is an L-shaped reinforcing plate.

5. 2. The building wall intersection structure according to claim 1, wherein the first wall is a partition wall and the second wall is a partition wall or an exterior wall.

6. The building wall intersection structure according to claim 2 , wherein the first wall and the second wall are both partition walls.

7. 6. The building wall intersection structure according to claim 5, wherein the first and second panels of the first wall forming the partition wall are both made of two or more layers of overlapping panels.

8. The intersection structure of a building wall as described in claim 6, wherein the first panel and the second panel of the first wall forming the partition wall, and the third panel and the fourth panel of the second wall are all overlapping panels of two or more layers of panel materials.

9. 8. The building wall intersection structure according to claim 5 or 7, wherein a soundproofing material is disposed between the first panel and the second panel.

10. 9. The intersection structure of a building wall according to claim 6 or 8, wherein soundproofing material is disposed between the first panel and the second panel, and between the third panel and the fourth panel.

11. In the first wall, the first A studs and the first B studs adjacent to each other are arranged so as to be alternately shifted in a direction perpendicular to the horizontal longitudinal direction, 3. The building wall intersection structure according to claim 1, wherein in the second wall, the adjacent second A studs and the adjacent second B studs are arranged alternately offset in a direction perpendicular to the horizontal longitudinal direction.

12. In the first wall, all of the first A studs and the first B studs are disposed at the wall core position of the first wall, and the first face material and the second face material are attached to the first A studs and the first B studs, respectively, via a batten; 3. The building wall intersection structure according to claim 1, wherein all of the second A studs and the second B studs are disposed at the wall core position of the second wall, and the third panel and the fourth panel are attached to each of the second A studs and the second B studs via a batten.