Intersection structure of building wall

Abstract

Provided is an intersection structure of a building wall having excellent sound insulation and shock resistance. The intersection structure (100) of a building wall has an intersection (70) in which a first wall (30) and a second wall (60) intersect in a T-shape in plan view, a second corner (72) of the intersection (70) is not provided with a first B stud (20B) to which a second surface material (10B) is mounted, and is provided with a second A stud (50A) to which a third surface material (40A) is mounted, and a reinforcing plate (80) straddles both the inner surface of the second surface material (10B) and the second A stud (50A) at the second corner (72), and the reinforcing plate (80) straddles both the inner surface of the second surface material (10B) and the second A stud (50A). The second surface material (10B) is fixed to both the second surface material (10B) and the second column (50A).

Description

Technical Field

[0001] The invention relates to a cross-section structure of a building wall. Background Art

[0002] Dry partition walls including boundary walls are formed by arranging multiple studs (or middle studs) at intervals along the long sides of a pair of upper and lower longitudinal members, and installing gypsum boards or other surface materials on both sides of each stud. Two rooms are divided by the partition wall.

[0003] In a double-sided structure in which surface materials are installed on both sides of each stud constituting a dry partition wall, a so-called sound bridge is formed, and sound is easily transmitted (easily leaked) from one room to another, resulting in a partition wall with low sound insulation. In response to this, in order to improve the sound insulation performance, a single-sided structure in which adjacent studs are arranged in a zigzag shape and surface materials are installed on one side of each stud is sometimes adopted. One example of this is disclosed in Patent Document 1. The partition wall with sound insulation disclosed in Patent Document 1 is a partition wall formed by fixing two layers of wall panels sandwiching studs, and filling a sound insulation material in a hollow layer between the wall panels. A wall panel surface is abutted on one side of the stud, and a gap is provided between the other side of the stud and another wall panel surface. Studs are arranged in a zigzag shape between the wall panels, and sound insulation materials are filled in the gaps between the hollow layer and the studs and the wall panels.

[0004] <Prior Art Literature>

[0005] <Patent Documents>

[0006] Patent Document 1: (Japanese) Utility Model Publication No. 5-47123 Summary of the invention

[0007] <Problems to be Solved by the Invention>

[0008] As exemplified by the partition wall described in Patent Document 1, Figure 1 An example of a partition wall structure in which a surface material is laid on one side of a stud is shown. Figure 1 The illustrated example is a cross-sectional view of an example of a conventional partition wall. The illustrated example is a view centered on an intersection 70 formed by a first wall 30 as a partition wall and a second wall 60 as a partition wall or an outer wall intersecting in a T-shape in a plan view.

[0009] In the first wall 30, a plurality of 1A columns 20A and a plurality of 1B columns 20B spaced apart from each other in the horizontal long side direction thereof are alternately staggered in a direction orthogonal to the horizontal long side direction to form a zigzag arrangement, and a first surface material 10A is installed on a single side surface of the plurality of 1A columns 20A, and a second surface material 10B is installed on a single side surface of the plurality of 1B columns 20B. The first surface material 10A is an overlapping arrangement of a lower cladding layer 11A formed by a plurality of lower cladding materials and an upper cladding layer 12A formed by a plurality of upper cladding materials, one of which is arranged in a horizontal direction and the other in a vertical direction. Similarly, the second surface material 10B is an overlapping arrangement of a lower cladding layer 11B formed by a plurality of lower cladding materials and an upper cladding layer 12B formed by a plurality of upper cladding materials, one of which is arranged in a horizontal direction and the other in a vertical direction. The lower cladding layers 11A and 11B are fixed to the corresponding studs 20A and 20B by means of fixing members 25 such as screws, and the upper cladding layers 12A and 12B are fixed to the lower cladding layers 11A and 11B by means of adhesives, nails or the like.

[0010] The first wall 30 has a hollow space 15 inside, and sound insulation and heat insulation are ensured by the hollow space 15. In order to further improve the sound insulation performance, there is also a method of filling the hollow space 15 with a sound insulation material.

[0011] In the second wall 60, a plurality of 2A columns 50A and a plurality of 2B columns 50B spaced apart from each other in the horizontal long side direction thereof are alternately staggered in a direction orthogonal to the horizontal long side direction to form a zigzag arrangement, and a third surface material 40A is installed on a single side surface of the plurality of 2A columns 50A, and a fourth surface material 40B is installed on a single side surface of the plurality of 2B columns 50B. The third surface material 40A is an overlapping arrangement of a lower cladding layer 41A formed by a plurality of lower cladding surface materials and an upper cladding layer 42A formed by a plurality of upper cladding surface materials, one of which is arranged in a horizontal direction and the other in a vertical direction. Similarly, the fourth surface material 40B is an overlapping arrangement of a lower cladding layer 41B formed by a plurality of lower cladding surface materials and an upper cladding layer 42B formed by a plurality of upper cladding surface materials, one of which is arranged in a horizontal direction and the other in a vertical direction. The lower cladding layers 41A and 41B are fixed to the corresponding studs 50A and 50B by means of fixing members 25 such as screws, and the upper cladding layers 42A and 42B are fixed to the lower cladding layers 41A and 41B by means of adhesives, nails or the like.

[0012] The second wall 60 has a hollow space 45 inside, and sound insulation and heat insulation are ensured by the hollow space 45. In order to further improve the sound insulation performance, there is also a method of filling the hollow space 45 with a sound insulation material.

[0013] The intersection 70 formed by the first wall 30 and the second wall 60 intersecting in a T-shape when viewed from above forms an intersection structure 90 of the building wall, and the first corner 71 and the second corner 72 of the two inner corners of the intersection 70 are respectively opposite to the two rooms R1 and R2. In the intersection structure 90, in order to prevent sound from propagating through the lower cladding layer 41A of the third surface material 40A constituting the second wall 60, a longitudinal (vertical) slit 55 is provided in the intersection 70.

[0014] Thus, by providing a structure in which no surface material is installed on both surfaces of the 1A stud 20A and the 1B stud 20B constituting the first wall 30, and by providing the undercladding 41A of the third surface material 40A constituting the second wall 60 with the longitudinal slit 55 at the intersection 70, the sound insulation performance of the partition wall 30 can be improved. However, on the other hand, since there is no stud for supporting the second surface material 10B at the second corner 72, a structural weak portion W is formed. Therefore, by forming the structural weak portion W at a part of the intersection 70, when the building is displaced by an earthquake or the like, there is a possibility that cracks or the like may occur at the structural weak portion W and its surroundings, resulting in a problem of a low earthquake resistance intersection structure.

[0015] The invention provides a cross-section structure of a building wall with excellent sound insulation and earthquake resistance.

[0016] <Methods used to solve the problem>

[0017] The intersection structure of a building wall according to one embodiment of the present invention is an intersection structure of a building wall having an intersection formed by a first wall and a second wall intersecting in a T-shape in a plan view, wherein the first wall is formed by alternately providing a plurality of 1A columns and 1B columns at intervals in a horizontal long side direction thereof, and installing a first surface material on a single side surface of a plurality of the 1A columns, and installing a second surface material on a single side surface of a plurality of the 1B columns, and the second wall is formed by alternately providing a plurality of 2A columns and 2B columns at intervals in a horizontal long side direction thereof, and installing a third surface material on a single side surface of a plurality of the 2A columns, and installing a third surface material on a single side surface of a plurality of the 1B columns. The 2B column is formed by installing the 4th surface material on a single side surface of the column, the 1A column to which the 1st surface material is installed is arranged at the first corner of one of the two corners of the intersection, and the 2A column to which the 3rd surface material is installed is arranged, and the 1B column to which the 2nd surface material is installed is not arranged at the second corner of the other of the two corners of the intersection, but the 2A column to which the 3rd surface material is installed is arranged, and at the second corner, a reinforcing plate spans both the inner side surface of the 2nd surface material and the 2A column, and the reinforcing plate is fixed to both the 2nd surface material and the 2A column.

[0018] In addition, a building wall intersection structure according to another embodiment of the present invention is a building wall intersection structure having an intersection formed by a first wall and a second wall intersecting in a cross shape in a plan view, wherein the first wall is formed by alternately providing a plurality of 1A columns and 1B columns at intervals in a horizontal long side direction thereof, and a first surface material is installed on a single side surface of a plurality of the 1A columns, and a second surface material is installed on a single side surface of a plurality of the 1B columns, and the second wall is formed by alternately providing a plurality of 2A columns at intervals in a horizontal long side direction thereof. The first corner of the four corners of the intersection is provided with the first-side column and the second-side column, and the third surface material is installed on one side of the plurality of the second-side columns, and the fourth surface material is installed on one side of the plurality of the second-side columns, the first corner of the four corners of the intersection is provided with the first-side column to which the first surface material is installed, and the second-side column to which the third surface material is installed is not installed, the second corner of the four corners of the intersection is provided with the second-side column to which the third surface material is installed, and the second-side column to which the third surface material is installed is installed, and the first corner of the four corners of the intersection is provided with the second-side column to which the third surface material is installed, and the second-side column to which the third surface material is installed is provided, and the first corner of the four corners of the intersection is provided with the second-side column to which the third surface material is installed. The third corner among the four corners of the cross section is provided with the 2B column to which the fourth surface material is mounted, and the 1A column to which the first surface material is mounted is not provided. The fourth corner among the four corners of the cross section is provided with the 1B column to which the second surface material is mounted, and the 2B column to which the fourth surface material is mounted is not provided. At the first corner, the reinforcing plate spans across the inner side surface of the third surface material and the 1A column, and the reinforcing plate is fixed to both the third surface material and the 1A column. At the second corner, the reinforcing plate spans across the inner side surface of the third surface material and the 1A column, and the reinforcing plate spans across the inner side surface of the third surface material and the 1A column. At the corner, the reinforcing plate spans over the inner side surface of the second surface material and the 2A column, and the reinforcing plate is fixed to both the second surface material and the 2A column. At the third corner, the reinforcing plate spans over the inner side surface of the first surface material and the 2B column, and the reinforcing plate is fixed to both the first surface material and the 2B column. At the fourth corner, the reinforcing plate spans over the inner side surface of the fourth surface material and the 1B column, and the reinforcing plate is fixed to both the fourth surface material and the 1B column.

[0019] <Effects of the Invention>

[0020] According to the present invention, it is possible to provide a building wall intersection structure having excellent sound insulation and earthquake resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a cross-sectional view of an example (Comparative Example 1) of a conventional intersection structure of a building wall.

[0022] Figure 2 This is a cross-sectional view of an example of the intersection structure of the building wall according to the first embodiment.

[0023] Figure 3It is a cross-sectional view of another example of the intersection structure of the building wall according to the first embodiment.

[0024] Figure 4 It is a cross-sectional view of another example of the intersection structure of the building wall according to the second embodiment.

[0025] Figure 5 It is a cross-sectional view of another example of the intersection structure of the building wall according to the third embodiment.

[0026] Figure 6 It is a cross-sectional view of a modified example of the intersection structure of the building wall according to the third embodiment.

[0027] Figure 7 It is a cross-sectional view of another example (Comparative Example 2) of the intersection structure of the conventional building wall.

[0028] Figure 8 It is a cross-sectional view of still another example (Comparative Example 3) of the conventional intersection structure of a building wall. DETAILED DESCRIPTION

[0029] Hereinafter, the intersection structure of the building wall according to each embodiment will be described with reference to the drawings. In this specification and the drawings, substantially the same structural elements are denoted by the same reference numerals, and duplicate descriptions are sometimes omitted.

[0030] [Intersection structure of building wall according to first embodiment]

[0031] First, refer to Figure 2 and Figure 3 An example of the intersection structure of the building wall according to the first embodiment is described. Figure 2 is a cross-sectional view of an example of the intersection structure of the building wall according to the first embodiment, Figure 3 It is a cross-sectional view of another example of the intersection structure of the building wall according to the first embodiment.

[0032] The intersection structure of the building wall in the example shown in the figure is a wall with two overlapping surfaces composed of two layers of lower and upper layers, but each wall can also be a wall with three or more overlapping surface materials on both sides, or a wall with one (1 layer) surface material on each side.

[0033] Figure 2 The intersection structure 100 of the building wall shown is applicable to buildings with iron frame structures, buildings with RC (Reinforced Concrete) structures, wooden buildings, etc., and these buildings include factories, warehouses, etc. in addition to general single-family houses or collective residences such as apartments.

[0034] The intersection structure 100 is an intersection structure having an intersection 70 formed by the first wall 30 and the second wall 60 intersecting in a T-shape in a plan view.

[0035] The first wall 30 and the second wall 60 both have lower longitudinal members (or floor longitudinal members) and upper longitudinal members (or ceiling longitudinal members) not shown extending in the lateral direction (horizontal direction), and upper and lower ends of columns 20A, 20B, 50A, and 50B extending in the longitudinal direction (vertical direction) are installed relative to the upper and lower longitudinal members. The upper and lower longitudinal members are both formed of a light iron frame material such as channel steel, and the upper longitudinal member is installed on the upper floor structure not shown in the figure in a manner that the opening faces downward, and the lower longitudinal member is installed on the lower floor structure not shown in the figure in a manner that the opening faces upward.

[0036] The columns 20A, 20B, 50A, 50B are formed of channel steel with a lip portion of a lightweight iron frame, but may also be formed of channel steel or square steel pipes. Here, a plurality of vibration isolators (not shown) extending in the horizontal direction may also be provided at a predetermined interval (e.g., an interval of 1200 mm) in the height direction of the columns 20A, 20B, 50A, 50B.

[0037] The upper longitudinal members, lower longitudinal members and spacers 20A, 20B, 50A, 50B are, for example, lightweight iron frame materials with a thickness of 0.4 mm or more, and can be steel longitudinal members and steel spacers specified in JIS A 6517 ("Steel base materials for construction"), or equivalent, conforming or interchangeable products thereof. In the first wall 30 and the second wall 60, a plurality of spacers 20A, 20B, 50A, 50B are provided between the lower longitudinal members and the upper longitudinal members at intervals of 606 mm or less (e.g., intervals of 606 mm and 455 mm) in the horizontal long side direction of the wall. In addition, the spacers 20A, 20B, 50A, and 50B in the illustrated example may be of 65 shape (65mm×45mm×0.8mm) or 75 shape (75mm×45mm×0.8mm), and may also be of 50 shape (50mm×45mm×0.8mm) or 90 shape (90mm×45mm×0.8mm), or 100 shape (100mm×45mm×0.8mm).

[0038] In the first wall 30, a plurality of 1A columns 20A and a plurality of 1B columns 20B are alternately staggered and arranged in a direction orthogonal to the horizontal long side direction at intervals relative to the horizontal long side direction to form a zigzag arrangement, and a first surface material 10A is installed on a single side surface of the plurality of 1A columns 20A, and a second surface material 10B is installed on a single side surface of the plurality of 1B columns 20B. The first surface material 10A is an overlapping structure of a lower coating layer 11A formed by a plurality of lower coating surface materials and an upper coating layer 12A formed by a plurality of upper coating surface materials, one of which is arranged in a horizontal direction and the other is arranged in a vertical direction. Similarly, the second surface material 10B is an overlapping structure of a lower coating layer 11B formed by a plurality of lower coating surface materials and an upper coating layer 12B formed by a plurality of upper coating surface materials, one of which is arranged in a horizontal direction and the other is arranged in a vertical direction. The lower cladding layers 11A and 11B are fixed to the studs 20A and 20B respectively by means of fixing members 25 such as screws, and the upper cladding layers 12A and 12B are fixed to the lower cladding layers 11A and 11B by means of adhesives, nails or the like.

[0039] The first wall 30 has a hollow space 15 inside, and sound insulation and heat insulation are ensured by the hollow space 15. In addition, in order to further improve the sound insulation performance, the hollow space 15 may be filled with a sound insulation material (including a sound absorbing material or a sound insulating material) such as glass wool or rock wool.

[0040] In the second wall 60, a plurality of 2A columns 50A and a plurality of 2B columns 50B are alternately staggered and arranged in a direction orthogonal to the horizontal long side direction at intervals relative to the horizontal long side direction to form a zigzag arrangement, and a third surface material 40A is installed on a single side surface of a plurality of 2A columns 50A, and a fourth surface material 40B is installed on a single side surface of a plurality of 2B columns 50B. The third surface material 40A is an overlapping structure of a lower coating layer 41A formed by a plurality of lower coating surface materials and an upper coating layer 42A formed by a plurality of upper coating surface materials, one of which is arranged in a horizontal direction and the other is arranged in a vertical direction. Similarly, the fourth surface material 40B is an overlapping structure of a lower coating layer 41B formed by a plurality of lower coating surface materials and an upper coating layer 42B formed by a plurality of upper coating surface materials, one of which is arranged in a horizontal direction and the other is arranged in a vertical direction. The lower cladding layers 41A and 41B are fixed to the studs 50A and 50B respectively by means of fixing members 25 such as screws, and the upper cladding layers 42A and 42B are fixed to the lower cladding layers 41A and 41B by means of adhesives, nails or the like.

[0041] The second wall 60 has a hollow space 45 inside, and sound insulation and heat insulation are ensured by the hollow space 45. In order to further improve the sound insulation performance, the hollow space 45 may be filled with a sound insulation material such as glass wool or rock wool.

[0042] The intersection 70 formed by the first wall 30 and the second wall 60 intersecting in a T-shape in a top view forms an intersection structure 100, and the first corner 71 and the second corner 72 of the two inner corners of the intersection 70 are respectively opposite to the two rooms R1 and R2. In the intersection structure 100, in order to prevent sound from propagating through the lower cladding layer 41A of the third surface material 40A constituting the second wall 60, a wide slit 56 extending in the longitudinal direction (vertical direction) is provided in the intersection 70.

[0043] The lower coating surface material used to form the lower coating layers 11A, 11B, 41A, 41B may be a bare gypsum board or gypsum board, calcium silicate board, particle board, hardboard, plywood, structural plywood, etc. Among them, a bare gypsum board or gypsum board is preferably used.

[0044] On the other hand, as the upper coating layer material forming the upper coating layers 12A, 12B, 42A, and 42B, bare gypsum board, gypsum board, calcium silicate board, and the like can be used. Among them, bare gypsum board or gypsum board is preferably used.

[0045] In addition to general gypsum boards, gypsum boards also include reinforced gypsum boards, ordinary hard gypsum boards, matured hard gypsum boards, moisture-absorbing and desorption reinforced gypsum boards, moisture-absorbing and desorption ordinary gypsum boards, moisture-absorbing and desorption matured hard gypsum boards, glass fiber non-woven gypsum boards, glass felt gypsum boards, etc.

[0046] For example, when gypsum board is used, it is formed by quasi-non-combustible material with short sides, long sides and thickness of 910mm×1820mm×9.5mm, or non-combustible material of 910mm×1820mm (2420mm, 2730mm)×12.5mm (15mm, 21mm, 25mm). In addition to 910mm, the width of the gypsum board can also be 606mm, 1000mm, 1220mm, etc.

[0047] The first wall 30 is a partition wall that divides the rooms R1 and R2. On the other hand, the second wall 60 may be another partition wall that forms the rooms R1 and R2 together with the first wall 30, or may be an outer wall.

[0048] In this way, by having a structure in which no surface material is installed on both surfaces of the 1A column 20A and the 1B column 20B constituting the first wall 30, and the lower cladding layer 41A of the third surface material 40A constituting the second wall 60 has a longitudinal slit 56 at the intersection 70, the sound insulation performance of the partition wall 30 can be improved.

[0049] In addition, Figure 1Unlike the intersection structure 90 shown, in order to prevent the formation of a structural weak portion W in the second corner portion 72, at the second corner portion 72 where the second surface material 10B is not supported by the 1B column 20B, a flat reinforcing plate 80 (an example of a reinforcing plate) spans both the inner side surface of the second surface material 10B and the 2A column 50A forming the second wall 60, and is fixed to both the second surface material 10B and the 2A column 50A using fasteners 28 such as screws.

[0050] The flat reinforcing plate 80 is in the form of a long strip having the length in the vertical direction of the second surface material 10B and the 2A column 50A, and is fixed to the second surface material 10B and the 2A column 50A at predetermined intervals in the vertical direction by a plurality of fixing members 28. In addition, the flat reinforcing plate 80 may also be in the form of a plurality of relatively short strips, and a plurality of flat reinforcing plates 80 may be intermittently arranged and fixed to each of the second surface material 10B and the 2A column 50A.

[0051] In addition, as shown in the figure, the fixing position of the flat reinforcing plate 80 relative to the fixing piece 28 of the second surface material 10B and the second A column 50A is set as close to the second corner 72 as possible, thereby shortening the distance from each fixing piece 28 when the second corner 72 is used as a fulcrum, thereby reducing the pulling force caused by the bending moment acting on each fixing piece 28, so this form is preferred. From the viewpoint of being as close to the second corner 72 as possible and ensuring good fastening, the fixing position of the fixing piece 28 can be set at a position about 10 to 15 mm away from the second corner 72.

[0052] According to the intersection structure 100 of the building wall, the second corner 72 of the second surface material 10B not supported by the 1B stud 20B is reinforced by the flat reinforcing plate 80, so that an intersection structure with excellent sound insulation and earthquake resistance can be formed.

[0053] Although not shown in the figure, the flat reinforcing plate 80 may be fixed to both the 2A column 50A and the 1B column 20B by the fixing member 28. In addition, stoppers may be installed on the upper and lower longitudinal members not shown in the figure to suppress the movement of the flat reinforcing plate 80. In addition, the flat reinforcing plate 80 may be sandwiched by the upper and lower longitudinal members not shown in the figure and the spacers provided on the upper and lower longitudinal members. Furthermore, the end face of the lower surface material 11B may be abutted against the 2A column 50A without passing through the lower surface material 41A, thereby setting the fixing position of the fixing member 28 for fixing the flat reinforcing plate 80 to the lower surface material 11B at a position closer to the 2A column 50A.

[0054] on the other hand, Figure 3The intersection structure 100A of the building wall shown in the figure is different from the intersection structure 100 as follows. That is, in the first wall 30, the first A column 20A and the first B column 20B are both arranged on the wall core L1, and the first surface material 10A and the second surface material 10B are alternately installed through the pad 21. In addition, in the second wall 60, the second A column 50A and the second B column 50B are both arranged on the wall core L2, and the third surface material 40A and the fourth surface material 40B are alternately installed through the pad 51.

[0055] In the intersection structure 100A, the second corner portion 72 of the second surface material 10B not supported by the 1B stud 20B is also reinforced by the flat reinforcing plate 80, thereby forming an intersection structure with excellent sound insulation and earthquake resistance.

[0056] [Intersection structure of building wall according to the second embodiment]

[0057] Next, refer to Figure 4 , an example of the intersection structure of the building wall according to the second embodiment is described. Figure 4 It is a cross-sectional view of another example of the intersection structure of the building wall according to the second embodiment.

[0058] Figure 4 The intersection structure 100B of the building wall shown is different from the intersection structure 100 in that an L-shaped reinforcement plate 85 (another example of a reinforcement plate) is used instead of the flat reinforcement plate 80. The L-shaped reinforcement plate 85 can also be used for the intersection structure 100A having the pads 21 and 51.

[0059] The L-shaped reinforcing plate 85 is pre-installed on one surface of the 2A column 50A by using double-sided tape or screws, for example. The reinforcing plate is clamped by one surface of the 2A column 50A and the third surface material 40A, and the other piece of the L-shaped reinforcing plate 85 is tightly attached to the inner side surface of the second surface material 10B. The two reinforcing plates are installed on the 2A column 50A and the second surface material 10B and fixed by fasteners 28 such as screws.

[0060] The L-shaped reinforcing plate 85 is in the form of a long strip having the length in the vertical direction of the second surface material 10B and the 2A column 50A, and is fixed to the second surface material 10B and the 2A column 50A at predetermined intervals in the vertical direction by a plurality of fixing members 28. In addition, the L-shaped reinforcing plate 85 can also be in the form of a plurality of relatively short strips, and a plurality of L-shaped reinforcing plates 85 are intermittently provided and fixed to the second surface material 10B and the 2A column 50A.

[0061] In addition, as shown in the figure, the fixing position of the L-shaped reinforcing plate 85 to the second surface material 10B and the 2A spacer 50A by the fixing piece 28 is set as close to the second corner 72 as possible, thereby shortening the distance from each fixing piece 28 when the second corner 72 is used as a fulcrum, thereby reducing the pulling force caused by the bending moment acting on each fixing piece 28. Therefore, the above form is preferred. From the viewpoint of being as close to the second corner 72 as possible and ensuring good fastening, the position of the fixing piece 28 can be set at a distance of about 10 to 15 mm from the second corner 72.

[0062] In the intersection structure 100B of the building wall, the L-shaped reinforcing plate 85 is also used to reinforce the second corner 72 of the second surface material 10B not supported by the 1B stud 20B, thereby forming an intersection structure with excellent sound insulation and earthquake resistance.

[0063] Although not shown in the figure, the L-shaped reinforcing plate 85 may be fixed to both the 2A column 50A and the 1B column 20B by the fixing member 28. In addition, a stopper may be installed on the upper and lower longitudinal members not shown in the figure to suppress the movement of the L-shaped reinforcing plate 85. In addition, the flat reinforcing plate 80 may be clamped by the upper and lower longitudinal members not shown in the figure and the spacers provided on the upper and lower longitudinal members. Furthermore, the end face of the lower surface material 11B may be abutted against the 2A column 50A without passing through the lower surface material 41A, thereby setting the fixing position of the fixing member 28 for fixing the L-shaped reinforcing plate 85 to the lower surface material 11B at a position closer to the 2A column 50A.

[0064] [Intersection structure of building wall according to the third embodiment]

[0065] Below, refer to Figure 5 and Figure 6 , an example of the intersection structure of the building wall according to the third embodiment is described. Figure 5 is a cross-sectional view of another example of the intersection structure of the building wall according to the third embodiment, Figure 6 It is a cross-sectional view of a modified example of the intersection structure of the building wall according to the third embodiment.

[0066] Figure 5 The intersection structure 100C of the building wall shown is an intersection structure having an intersection 70A formed by a first wall 30 and a second wall 60 intersecting in a cross shape in a plan view. Since the intersection 70A is in a cross shape, it has a total of four corners (inner corners) including a first corner 71 and a second corner 72, a third corner 73, and a fourth corner 74. In addition, four wide slits 56 extending in the longitudinal direction (vertical direction) are provided in the intersection 70A.

[0067] The first wall 30 and the second wall 60 are both partition walls, and four rooms R1 , R2 , R3 , and R4 are provided around the intersection structure 100C with the intersection 70A as the center via the first wall 30 and the second wall 60 .

[0068] In the intersection structure 100C, the 1A stud 20A to which the first face material 10A is attached is arranged at the first corner 71 , but the 2A stud 50A to which the third face material 40A is attached is not arranged. Therefore, the third face material 40A at the first corner 71 forms a structurally weak portion.

[0069] On the other hand, the 1B stud 20B to which the second face material 10B is attached is not arranged at the second corner portion 72 , but the 2A stud 50A to which the third face material 40A is attached is arranged. Therefore, the second face material 10B at the second corner portion 72 forms a structurally weak portion.

[0070] On the other hand, the 2B stud 50B to which the 4th face material 40B is attached is arranged at the 3rd corner portion 73, and the 1A stud 20A to which the 1st face material 10A is attached is not arranged. Therefore, the 1st face material 10A at the 3rd corner portion 73 forms a structurally weak portion.

[0071] In addition, the 1B stud 20B to which the 2nd face material 10B is attached is arranged at the 4th corner portion 74, but the 2B stud 50B to which the 4th face material 40B is attached is not arranged. Therefore, the 4th face material 40B at the 4th corner portion 74 forms a structurally weak portion.

[0072] Therefore, in order to prevent the formation of a structural weak portion at the intersection 70A, an L-shaped reinforcement plate 85 is applied to the first corner 71 to the fourth corner 74 respectively, and the L-shaped reinforcement plate 85 is fixed to the inner side of the corresponding spacer and surface material by fixing parts 28 such as screws.

[0073] According to the intersection structure 100C of the building wall, even in the case of an intersection 70A having a cross shape when viewed from above, at the four corners 71 to 74, the portions of the surface material not supported by the columns are reinforced with L-shaped reinforcing plates 85, thereby forming an intersection structure with excellent sound insulation and earthquake resistance.

[0074] on the other hand, Figure 6 The illustrated intersection structure 100D of the building wall is an intersection structure having an intersection 70A that intersects in a cross shape in a plan view, but a reinforcing plate 80 similar to the intersection structures 100 and 100A is applied instead of an L-shaped reinforcing plate 85 .

[0075] The same is true for the intersection structure 100D through the building wall. In the case of a cross-shaped intersection 70A when viewed from above, flat reinforcing plates 80 are provided to reinforce the four corners 71 to 74 where the surface material is not supported by the columns, thereby forming an intersection structure with excellent sound insulation and earthquake resistance.

[0076] [Study on the structural performance of the intersection of building walls]

[0077] Next, the performance of the intersection structure of the building wall of the embodiment (Example) will be described by comparing with the existing intersection structure of the building wall (Comparative Example). Figure 1 The intersection structure 90 shown is used as Comparative Example 1, and as other comparative examples, Figure 7 The intersection structure 90A shown in FIG. 2 is used as a comparative example. Figure 8 The intersection structure 90B shown is used as Comparative Example 3. Figure 2 The intersection structure 100 shown is used as Example 1. Figure 3 The intersection structure 100A shown in the figure is used as Example 2. Figure 4 The intersection structure 100B shown is Example 3.

[0078] Figure 7 The intersection structure 90A of the comparative example 2 shown is a form in which the first surface material 10A and the second surface material 10B are fixed to both sides of a common stud 20C at the intersection 70. Therefore, in the intersection structure 90A, the intersection 70 does not form a structural weak part. On the other hand, although there is a longitudinal slit 55, the stud 20C can form a sound bridge between the rooms R1 and R2.

[0079] on the other hand, Figure 8 The cross section structure 90B of the comparative example 3 shown is a form in which there is no longitudinal slit 55 in the cross section 70 except that the first surface material 10A and the second surface material 10B are fixed to the two sides of the common spacer 20C, and the third surface material 40A and the fourth surface material 40B are also fixed to the common spacer 50C. Therefore, in the cross section structure 90B, the cross section 70 does not form a structural weak part. On the other hand, the spacer 20C and the lower surface material 41A can form a sound bridge between the chambers R1 and R2.

[0080] Comparative Example 3 is a T-shaped intersection, which is a conventionally known structure. Comparative Example 2 is an improved structure capable of reducing sound bridges compared to Comparative Example 3. Comparative Example 1 is an improved structure capable of further reducing sound bridges compared to Comparative Example 2.

[0081] The sound insulation performance and anti-vibration performance of each of the above Examples 1 to 3 and Comparative Examples 1 to 3 are shown in the following Table 1. Here, "○" for the sound insulation performance in Table 1 indicates good, "△" indicates not good but applicable, and "×" indicates not applicable. In addition, "○" for the anti-vibration performance indicates high performance, and "×" indicates low performance.

[0082] [Table 1]

[0083] Sound insulation performance Earthquake resistance (strength of corners at intersections) Example 1 ○ ○ Example 2 ○ ○ Example 3 ○ ○ Comparative Example 1 ○ × Comparative Example 2 △ ○ Comparative Example 3 × ○

[0084] As described above, the sound insulation performance improves in the order of Comparative Example 3, Comparative Example 2, and Comparative Example 1. In Comparative Example 1, the sound insulation performance is good, but the anti-seismic performance is reduced due to the presence of a structural weak portion at the intersection 70.

[0085] Compared with Comparative Examples 1 to 3, Examples 1 to 3 are all cross-section structures with excellent sound insulation and anti-seismic performance.

[0086] In addition, with respect to the structure etc. listed in the above embodiment, other embodiments of the combination of other structural elements etc. may also be possible, and the present invention is not limited to the structure shown above. In this regard, changes may be made without departing from the scope of the gist of the present invention, and may be appropriately specified according to its application mode.

[0087] This international application claims priority based on Japanese patent application No. 2022-138307 filed on August 31, 2022, and all the contents of the application are cited in this international application.

[0088] Explanation of symbols

[0089] 10A 1st surface material

[0090] 10B 2nd surface material

[0091] 11A underlay surface material

[0092] 12A top surface material

[0093] 11B lower surface material

[0094] 12B top surface material

[0095] 15 Hollow

[0096] 20A No. 1A Column (Column)

[0097] 20B 1B column (column)

[0098] 21 Pad

[0099] 25 Fasteners (screws)

[0100] 28 Fixing parts (screws)

[0101] 30 The 1st Wall

[0102] 40A 3rd surface material

[0103] 40B 4th surface material

[0104] 41A underlay surface material

[0105] 42A top surface material

[0106] 41B lower surface material

[0107] 42B top surface material

[0108] 45 Hollow

[0109] 50A 2A column (column)

[0110] 50B 2B column (column)

[0111] 56 Slit

[0112] 60 Second Wall

[0113] 70, 70A intersection

[0114] 71 1st corner (corner)

[0115] 72 2nd corner (corner)

[0116] 73 3rd corner (corner)

[0117] 74 4th corner (corner)

[0118] 80 flat reinforcement plate (reinforcement plate)

[0119] 85L-shaped reinforcement plate (reinforcement plate)

[0120] 100, 100A, 100B, 100C, 100D Intersection structure of building wall (intersection structure)

[0121] L1, L2 wall core

Claims

1. A building wall intersection structure, comprising an intersection formed by a first wall and a second wall intersecting in a T-shape in a plan view, wherein: The first wall is formed by alternately arranging a plurality of 1A columns and 1B columns at intervals in the horizontal long side direction thereof, installing a first surface material on a single side surface of a plurality of the 1A columns, and installing a second surface material on a single side surface of a plurality of the 1B columns, The second wall is formed by alternately arranging a plurality of 2A columns and 2B columns at intervals in the horizontal long side direction thereof, installing a third surface material on a single side surface of a plurality of the 2A columns, and installing a fourth surface material on a single side surface of a plurality of the 2B columns. The first corner of one of the two corners of the intersection is provided with the firstA column to which the first surface material is attached, and the secondA column to which the third surface material is attached is provided. At the second corner of the other of the two corners of the intersection, the 1B column to which the second surface material is attached is not arranged, but the 2A column to which the third surface material is attached is arranged, At the second corner, the reinforcing plate spans over both the inner side surface of the second surface material and the 2A-spaced column, and the reinforcing plate is fixed to both the second surface material and the 2A-spaced column.

2. A building wall intersection structure, comprising an intersection formed by a first wall and a second wall intersecting in a cross shape in a plan view, wherein: The first wall is formed by alternately arranging a plurality of 1A columns and 1B columns at intervals in the horizontal long side direction thereof, installing a first surface material on a single side surface of a plurality of the 1A columns, and installing a second surface material on a single side surface of a plurality of the 1B columns, The second wall is formed by alternately arranging a plurality of 2A columns and 2B columns at intervals in the horizontal long side direction thereof, installing a third surface material on a single side surface of a plurality of the 2A columns, and installing a fourth surface material on a single side surface of a plurality of the 2B columns. At the first corner among the four corners of the intersection, the firstA column to which the first surface material is attached is arranged, and the secondA column to which the third surface material is attached is not arranged. At the second corner among the four corners of the intersection, the 1B column to which the second surface material is attached is not arranged, but the 2A column to which the third surface material is attached is arranged. At the third corner among the four corners of the intersection, the 2B column to which the fourth surface material is attached is arranged, and the 1A column to which the first surface material is attached is not arranged. At the fourth corner among the four corners of the intersection, the first B column to which the second surface material is attached is arranged, and the second B column to which the fourth surface material is attached is not arranged. At the first corner, the reinforcing plate spans across the inner side surface of the third surface material and the first A column, and the reinforcing plate is fixed to both the third surface material and the first A column. At the second corner, the reinforcing plate spans across both the inner side surface of the second surface material and the 2A column, and the reinforcing plate is fixed to both the second surface material and the 2A column. At the third corner, the reinforcing plate spans across the inner side surface of the first surface material and the second B column, and the reinforcing plate is fixed to both the first surface material and the second B column. At the fourth corner, the reinforcing plate spans over both the inner side surface of the fourth surface material and the 1B stud, and the reinforcing plate is fixed to both the fourth surface material and the 1B stud.

3. The intersection structure of a building wall 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 reinforcement plate is an L-shaped reinforcement plate.

5. The intersection structure of a building wall according to claim 1, any one of claims 3 or 4 dependent on claim 1, wherein: The first wall is a partition wall, and the second wall is a partition wall or an exterior wall.

6. The intersection structure of a building wall according to claim 2 or claim 4 when dependent on claim 2, wherein: The first wall and the second wall are both partition walls.

7. The intersection structure of a building wall according to claim 5, wherein: The first surface material and the second surface material forming the first wall of the partition wall are both formed by overlapping and laying two or more layers of surface materials.

8. The intersection structure of a building wall according to claim 6, wherein: The first surface material and the second surface material of the first wall forming the partition wall, and the third surface material and the fourth surface material of the second wall are all formed by overlapping and laying two or more layers of surface materials.

9. The intersection structure of a building wall according to claim 5 or 7, wherein: A sound insulating material is disposed between the first surface material and the second surface material.

10. The intersection structure of a building wall according to claim 6 or 8, wherein: Sound insulation materials are disposed between the first surface material and the second surface material, and between the third surface material and the fourth surface material.

11. The intersection structure of a building wall according to any one of claims 1 to 10, wherein: In the first wall, adjacent first-A columns and first-B columns are alternately staggered in a direction perpendicular to the horizontal long side direction. In the second wall, the adjacent 2A columns and the 2B columns are alternately staggered in a direction perpendicular to the horizontal long side direction.

12. The intersection structure of a building wall according to any one of claims 1 to 10, wherein: In the first wall, all the 1A columns and the 1B columns are arranged at the core position of the first wall, and the first surface material and the second surface material are respectively installed with respect to the 1A columns and the 1B columns through pads, In the second wall, all of the 2A columns and the 2B columns are disposed at the core position of the second wall, and the third surface material and the fourth surface material are respectively installed with respect to the 2A columns and the 2B columns via pads.

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