building

Abstract

To provide a building that can be adequately insulated. [Solution] The building comprises a first structure 12 having a plurality of wooden columns 32 arranged in a first direction D1. The first structure 12 has a load-bearing section 12a having CLT 21 provided between the columns 32 in the first direction D1, and a non-load-bearing section 12b where CLT 21 is not provided between the columns 32 in the first direction D1. The load-bearing section 12a has a first insulation material 22 located on the outdoor side of the CLT 21. The non-load-bearing section 12b has CLT 21, the first insulation material 22, and a second insulation material 23 arranged in the first direction D1.

Description

Technical Field

[0001] The present disclosure relates to a building.

Background Art

[0002] The building described in Patent Document 1 has an outer wall. Part or all of the outer wall is composed of a shear wall. The shear wall has a frame structure part and a shear panel located within the frame structure part. The shear panel is composed of, for example, CLT (Cross Laminated Timber).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 does not disclose the heat insulation structure of the outer wall. Therefore, the heat insulation structure of a building in which a part of the outer wall is composed of a shear wall due to the partial provision of CLT is not disclosed.

Means for Solving the Problems

[0005] (1) The building that solves the above problems includes a structure having a plurality of wooden shafts arranged in a first direction, and the structure has a shear part having CLT provided between the wooden shafts in the first direction and a non-shear part where the CLT is not provided between the wooden shafts in the first direction. The shear part has a first heat insulating material located on the outdoor side of the CLT, and the non-shear part has a second heat insulating material arranged in the first direction with the CLT and the first heat insulating material. [[ID=​​

[0006] (2) In the building described in (1) above, the non-load-bearing part is provided between the wooden framing where the CLT is installed. This configuration allows load-bearing and non-load-bearing sections to be placed between common wooden framing members.

[0007] (3) In the building described in (1) above, three or more of the wooden shafts are arranged in the first direction, and the non-load-bearing portion is provided between wooden shafts different from the wooden shafts where the CLT is provided. This configuration allows load-bearing and non-load-bearing sections to be placed between different wooden frames.

[0008] (4) In any one of the buildings described in (1) to (3) above, the thickness of the first insulation material is thinner than the thickness of the second insulation material. This configuration allows for a thinner load-bearing section compared to the case where the thickness of the first insulation material is equal to or greater than the thickness of the second insulation material.

[0009] (5) In any one of the buildings described in (1) to (4) above, the thermal conductivity of the first insulation material is lower than the thermal conductivity of the second insulation material. With this configuration, the thickness of the first insulation material can be reduced compared to the case where the thermal conductivity of the first insulation material is greater than or equal to that of the second insulation material. Therefore, the thickness of the load-bearing section can be reduced.

[0010] (6) In a building described in any one of (1) to (5) above, the load-bearing part is provided with a first base material located on the outdoor side of the first insulation material, and the first base material is in the form of a plate. Deterioration of the first insulation material may cause its thickness to partially decrease. With the above configuration, since the first base material is in the form of a board, its position is less likely to change even if the thickness of the first insulation material partially decreases, compared to when it is in the form of a rod like a furring strip. Therefore, the position of the members fixed to the first base material is less likely to change.

[0011] (7) In the building described in (6) above, the first base material is fixed to the CLT. This configuration allows the first base material to be stably fixed. Furthermore, when the thickness of the first insulation material partially decreases due to deterioration, the position of the first base material is less likely to change.

[0012] (8) In the building described in (7) above, the first insulation material is placed between the first base material and the CLT, and the first base material is fixed to the CLT by wood screws that penetrate the first base material and the first insulation material. With this configuration, not only the first base material but also the first insulation material can be fixed to the CLT.

[0013] (9) In a building described in any one of (6) to (8) above, the non-load-bearing portion is provided with a second base material located on the outdoor side of the second insulation material, and the second base material is in the form of a plate.

[0014] Deterioration of the second insulation material may cause its thickness to thin in some areas. With the above configuration, since the second base material is in the form of a board, its position is less likely to change even if the thickness of the second insulation material thins in some areas, compared to when it is in the form of a rod like a furring strip. Therefore, the position of the members fixed to the second base material is less likely to change. Furthermore, since plate-shaped base materials are provided not only in load-bearing areas but also in non-load-bearing areas, the degree of freedom in attaching ancillary components to the structure is increased.

[0015] (10) In the building described in (9) above, the structure is provided on the outdoor side of the first base material and the second base material and comprises a plurality of exterior materials fixed to the first base material and the second base material.

[0016] As described above, even if the thickness of the first heat insulating material becomes partially thinner due to deterioration of the first heat insulating material, the position of the first base material is unlikely to change, so the position of the member fixed to the first base material is unlikely to change. Further, even if the thickness of the second heat insulating material becomes partially thinner due to deterioration of the second heat insulating material, the position of the second base material is unlikely to change, so the position of the member fixed to the second base material is unlikely to change. Therefore, unevenness of the exterior material due to a change in the position of a part of the exterior material can be suppressed.

[0017] (11) In the building according to any one of (1) to (10) above, the CLT has an exposed surface that is exposed indoors. According to this configuration, since the grain of the CLT is exposed indoors, the interior design is improved. In addition, changes indoors due to the aging beautification of the wood can be provided.

[0018] (12) In the building according to any one of (1) to (11) above, the structure is an outer wall, the wooden shaft is a column, and the CLT is a wall material. According to this configuration, a part of the outer wall can be made into a shear wall by the CLT.

Advantages of the Invention

[0019] According to the building of the present disclosure, heat insulation can be suitably performed.

Brief Description of the Drawings

[0020] [Figure 1] It is a schematic diagram of a building. [Figure 2] It is a cross-sectional view of the structure along the line 2-2 in FIG. 1. [Figure 3] It is an exploded perspective view of the structure. [Figure 4] It is a cross-sectional view of the shear wall portion along the line 4-4 in FIG. 2. [Figure 5] It is a cross-sectional view of the non-shear wall portion along the line 5-5 in FIG. 2.

Embodiments for Carrying Out the Invention

[0021] The building 10 of this embodiment will be described with reference to Figures 1 to 5. As shown in Figure 1, the building 10 comprises a foundation 11, a first structure 12, and a second structure 13. The foundation 11 has a rising portion 11a extending in a first direction D1. The first structure 12 in this embodiment is an exterior wall. The first structure 12 is provided on the foundation 11. The second structure 13 in this embodiment is a roof.

[0022] The first structure 12 has a wooden frame 20. The wooden frame 20 is composed of multiple wooden shafts. In Figure 1, only the wooden frame 20 is shown among the members that make up the first structure 12.

[0023] The wooden frame 20 comprises multiple wooden shafts, including a horizontal member 31 and multiple columns 32. The horizontal member 31 extends in a first direction D1 above the rising portion 11a. The multiple columns 32 include a first column 32a, a second column 32b, a third column 32c, a fourth column 32d, and a fifth column 32e. The first column 32a, the second column 32b, the third column 32c, the fourth column 32d, and the fifth column 32e are arranged in this order with spacing in the first direction D1. Therefore, the first structure 12 has multiple wooden shafts arranged in the first direction D1. In this embodiment, the first column 32a, the third column 32c, the fourth column 32d, and the fifth column 32e are structural columns. The first column 32a, the third column 32c, the fourth column 32d, and the fifth column 32e are made of, for example, 120mm x 120mm square timber. The second column 32b is an intermediate column. The second column 32b is made of, for example, 60mm x 120mm square timber.

[0024] The multiple wooden frames constituting the wooden frame 20 further include an upper window frame 34, a lower window frame 35, an upper stud 36, and a lower stud 37. The upper window frame 34 and the lower window frame 35 each extend in the first direction D1. The upper window frame 34 and the lower window frame 35 are each located between the third column 32c and the fourth column 32d in the first direction D1. The upper window frame 34 and the lower window frame 35 each connect the third column 32c and the fourth column 32d. The lower window frame 35 is located below the upper window frame 34. The opening 20a is partitioned by the third column 32c, the fourth column 32d, the upper window frame 34, and the lower window frame 35. A window sash 14 is provided in the opening 20a.

[0025] The upper stud 36 and the lower stud 37 are located between the third column 32c and the fourth column 32d in the first direction D1, respectively. The upper stud 36 connects the horizontal member 31 and the upper window frame 34. The lower stud 37 connects the lower window frame 35 and the rising section 11a.

[0026] <Load-bearing part 12a> As shown in Figures 2 and 3, the first structure 12 has CLT (Cross Laminated Timber) 21. CLT 21 is a cross-laminated timber. CLT 21 is composed of multiple sawn timbers. The multiple sawn timbers are laminated and bonded together so that the fiber directions are perpendicular to each other. The thickness of CLT 21 is, for example, 90 mm to 120 mm. The width of CLT 21 is, for example, 2 m to 3 m.

[0027] CLT21 is used as a load-bearing element in the first structure 12. Therefore, the portion of the first structure 12 where CLT21 is provided is a load-bearing section 12a. In other words, the load-bearing section 12a has CLT21. The load-bearing section 12a bears horizontal loads. If the first structure 12 is an exterior wall, then CLT21 is a wall material, and the load-bearing section 12a is a load-bearing wall.

[0028] The CLT21 is provided between the columns 32 in the first direction D1. In this embodiment, the CLT21 is provided between the second column 32b and the third column 32c in the first direction D1. In this embodiment, the CLT21 is partially provided between the second column 32b and the third column 32c in the first direction D1. Specifically, the width of the CLT21 is smaller than the distance between the second column 32b and the third column 32c in the first direction D1. The CLT21 is provided adjacent to the third column 32c in the first direction D1 and away from the second column 32b in the first direction D1.

[0029] As shown in Figure 4, the upper end of the CLT 21 is connected to the horizontal member 31 via an upper connecting member 15. The lower end of the CLT 21 is connected to the rising portion 11a of the foundation 11 via a lower connecting member 16. The CLT 21 is supported by the upper connecting member 15 and the lower connecting member 16. The upper connecting member 15 and the lower connecting member 16 each have an elastic portion. Due to the elastic portion, the CLT 21 can rotate or move vertically around an axis extending in the thickness direction of the CLT 21 relative to the horizontal member 31 and the rising portion 11a. The CLT 21 has an exposed surface 21a that is exposed to the indoors.

[0030] As shown in Figures 2 and 4, the load-bearing section 12a has a first insulation material 22. The first insulation material 22 is located in a portion of the space between the second column 32b and the third column 32c in the first direction D1. The first insulation material 22 is aligned with the CLT 21 in the second direction D2. The second direction D2 is perpendicular to the first direction D1 in a plan view. The first insulation material 22 is located on the outdoor side of the CLT 21.

[0031] The load-bearing section 12a is equipped with a first base material 25. The first base material 25 is in the shape of a board. The first base material 25 is made of plywood. The width of the first base material 25 is, for example, 1 m. The first base material 25 is aligned with the first insulation material 22 in the second direction D2. The first base material 25 is located on the outdoor side of the first insulation material 22. The first insulation material 22 is positioned between the first base material 25 and the CLT 21 in the second direction D2.

[0032] The upper end of the first base material 25 is fixed to the horizontal member 31. The lower end of the first base material 25 is fixed to the base horizontal member 28 which is installed on the foundation 11. The first base material 25 is fixed to the CLT 21 with wood screws 29 to the extent that it does not hinder the rotation and movement of the CLT 21 relative to the foundation 11 and the horizontal member 31. The wood screws 29 penetrate the first base material 25 and the first insulation material 22. Therefore, the first insulation material 22 is fixed to the CLT 21 together with the first base material 25 by the wood screws 29.

[0033] <Non-load-bearing part 12b> As shown in Figure 2, the first structure 12 has a non-load-bearing section 12b in the first direction D1 where CLT 21 is not provided between the columns 32. The non-load-bearing section 12b is aligned with the load-bearing section 12a in the first direction D1.

[0034] In this embodiment, CLT 21 is not provided between the first column 32a and the second column 32b, a portion of the space between the second column 32b and the third column 32c, between the third column 32c and the fourth column 32d, and between the fourth column 32d and the fifth column 32e in the first direction D1. Therefore, the non-load-bearing portion 12b in this embodiment is provided between the first column 32a and the second column 32b, between the second column 32b and the CLT 21, between the third column 32c and the fourth column 32d, and between the fourth column 32d and the fifth column 32e in the first direction D1.

[0035] The non-load-bearing section 12b provided between the second column 32b and the CLT 21 is the non-load-bearing section 12b provided between the columns 32 on which the CLT 21 is installed, that is, between the second column 32b and the third column 32c. The non-load-bearing sections 12b provided between the first column 32a and the second column 32b, between the third column 32c and the fourth column 32d, and between the fourth column 32d and the fifth column 32e are non-load-bearing sections 12b provided between columns 32 that are different from the columns 32 on which the CLT 21 is installed.

[0036] The non-load-bearing section 12b has a second insulation material 23. In this embodiment, the second insulation material 23 is provided between the first column 32a and the second column 32b, between the second column 32b and the CLT 21, between the third column 32c and the fourth column 32d, and between the fourth column 32d and the fifth column 32e in the first direction D1.

[0037] The second insulation material 23 is aligned with the CLT 21 and the first insulation material 22 in the first direction D1. More specifically, the second insulation material 23 positioned between the second column 32b and the CLT 21 in the first direction D1 is adjacent to the CLT 21 and the first insulation material 22 in the first direction D1. The second insulation material 23 positioned between the first column 32a and the second column 32b, between the third column 32c and the fourth column 32d, and between the fourth column 32d and the fifth column 32e in the first direction D1 is aligned with the CLT 21 and the first insulation material 22 via the column 32 in the first direction D1.

[0038] In this embodiment, the types and thicknesses of the first insulation material 22 and the second insulation material 23 are set so that the thermal insulation performance of the load-bearing section 12a and the non-load-bearing section 12b are approximately the same. Specifically, the thermal insulation performance of the load-bearing section 12a is determined by the thermal insulation performance of the CLT 21 and the thermal insulation performance of the first insulation material 22. The thermal insulation performance of the CLT 21 is determined by the thermal conductivity of the CLT 21 and the thickness of the CLT 21. The thermal insulation performance of the first insulation material 22 is determined by the thermal conductivity of the first insulation material 22 and the thickness of the first insulation material 22. The thermal insulation performance of the non-load-bearing section 12b is determined by the thermal insulation performance of the second insulation material 23. The thermal insulation performance of the second insulation material 23 is determined by the thermal conductivity of the second insulation material 23 and the thickness of the second insulation material 23. In order to ensure that the thermal insulation performance of the load-bearing section 12a and the non-load-bearing section 12b are roughly the same, the thermal insulation performance of the first insulation material 22 is set lower than that of the second insulation material 23 by the amount of the thermal insulation performance of the CLT 21.

[0039] Specifically, the first insulation material 22 is made of a foamed plastic insulation material. The foamed plastic insulation material is, for example, polystyrene foam or urethane foam. In this embodiment, the first insulation material 22 is made of polystyrene foam. The second insulation material 23 is made of a fibrous insulation material. The fibrous insulation material is, for example, rock wool, glass wool, cellulose fiber, or wood fiber. In this embodiment, the second insulation material 23 is made of rock wool. Therefore, the thermal conductivity of the first insulation material 22 is lower than that of the second insulation material 23.

[0040] The thickness of the first insulation material 22 is, for example, 50 mm to 60 mm. The thickness of the second insulation material 23 is, for example, 100 mm to 120 mm. Therefore, the thickness of the first insulation material 22 is thinner than the thickness of the second insulation material 23.

[0041] As shown in Figures 2 and 5, the non-load-bearing section 12b is provided with an indoor-side base material 24. The indoor-side base material 24 is in the shape of a board. In this embodiment, the indoor-side base material 24 is made of gypsum board. The indoor-side base material 24 is aligned with the second insulation material 23 in the second direction D2. The indoor-side base material 24 is located on the indoor side of the second insulation material 23. The indoor-facing side of the indoor-side base material 24 is located on approximately the same plane as the exposed surface 21a of the CLT 21.

[0042] The non-load-bearing section 12b has a second base material 26. The second base material 26 is in the shape of a plate. The second base material 26 is made of plywood. The width of the second base material 26 is, for example, 1 m. The thickness of the second base material 26 is approximately the same as the thickness of the first base material 25. The second base material 26 is aligned with the second insulation material 23 in the second direction D2. The second base material 26 is located on the outdoor side of the second insulation material 23. The upper end of the second base material 26 is fixed to the horizontal member 31. The lower end of the second base material 26 is fixed to the base horizontal member 28. The second base material 26 is fixed to the column 32. The second base material 26 is located on the same plane as the first base material 25.

[0043] As shown in Figure 3, the first structure 12 has a plurality of exterior materials 27. The plurality of exterior materials 27 are provided on the outdoor side of the first base material 25 and the second base material 26. The plurality of exterior materials 27 are fixed to the first base material 25 and the second base material 26. In this embodiment, the plurality of exterior materials 27 are arranged in the vertical direction.

[0044] [Operation and Effects of This Embodiment] The operation and effects of this embodiment will now be explained. (1) The first structural element 12 of the building 10 has a plurality of wooden columns 32 arranged in a first direction D1. The first structural element 12 has a load-bearing section 12a having CLT 21 provided between the columns 32 in the first direction D1, and a non-load-bearing section 12b where CLT 21 is not provided between the columns 32 in the first direction D1. The load-bearing section 12a has a first insulation material 22 located on the outdoor side of the CLT 21. The non-load-bearing section 12b has CLT 21, the first insulation material 22, and a second insulation material 23 arranged in the first direction D1.

[0045] With this configuration, since insulation material is individually provided in the load-bearing section 12a and the non-load-bearing section 12b, suitable insulation can be achieved in each of the load-bearing section 12a and the non-load-bearing section 12b. (2) The CLT 21 is provided between the second column 32b and the third column 32c. The first structure 12 of this embodiment has a non-load-bearing section 12b provided between the second column 32b and the third column 32c. That is, the first structure 12 has a non-load-bearing section 12b provided between the columns 32 on which the CLT 21 is provided. With this configuration, the load-bearing section 12a and the non-load-bearing section 12b can be provided between the common columns 32.

[0046] (3) The first structure 12 of this embodiment has a non-load-bearing section 12b provided between the first column 32a and the second column 32b. That is, the first structure 12 has a non-load-bearing section 12b provided between different columns 32 than the columns 32 on which the CLT 21 is provided. With this configuration, the load-bearing section 12a and the non-load-bearing section 12b can be provided between different columns 32.

[0047] (4) The thickness of the first insulation material 22 is thinner than the thickness of the second insulation material 23. With this configuration, the thickness of the load-bearing section 12a can be reduced compared to the case where the thickness of the first insulation material 22 is equal to or greater than the thickness of the second insulation material 23.

[0048] (5) The thermal conductivity of the first insulation material 22 is lower than that of the second insulation material 23. With this configuration, the thickness of the first insulation material 22 can be reduced compared to the case where the thermal conductivity of the first insulation material 22 is equal to or greater than that of the second insulation material 23. Therefore, the thickness of the load-bearing section 12a can be reduced.

[0049] (6) The load-bearing section 12a is provided with a first base material 25 located on the outdoor side of the first insulation material 22. The first base material 25 is in the shape of a plate. Due to deterioration of the first insulation material 22, the thickness of the first insulation material 22 may partially decrease. With the above configuration, since the first base material 25 is in the shape of a plate, the position of the first base material 25 in the second direction D2 is less likely to change compared to the case where it is in the shape of a rod like a furring strip, even if the thickness of the first insulation material 22 partially decreases. Therefore, the position of the member fixed to the first base material 25 is less likely to change.

[0050] (7) The first base material 25 is fixed to the CLT 21. With this configuration, the first base material 25 can be fixed stably. In addition, when the thickness of the first insulation material 22 becomes partially thinner due to deterioration of the first insulation material 22, the position of the first base material 25 in the second direction D2 is less likely to change.

[0051] (8) With the first insulation material 22 positioned between the first base material 25 and the CLT 21, the first base material 25 is fixed to the CLT 21 by wood screws 29 that penetrate both the first base material 25 and the first insulation material 22. With this configuration, not only the first base material 25 but also the first insulation material 22 can be fixed to the CLT 21.

[0052] (9) The non-load-bearing section 12b is provided with a second base material 26 located on the outdoor side of the second insulation material 23. The second base material 26 is in the form of a plate. Due to deterioration of the second insulation material 23, the thickness of the second insulation material 23 may become partially thinner. With the above configuration, since the second base material 26 is in the shape of a plate, the position of the second base material 26 in the second direction D2 is less likely to change compared to the case where it is in the shape of a rod like a furring strip, even if the thickness of the second insulation material 23 becomes partially thinner. Therefore, the position of the member fixed to the second base material 26 is less likely to change.

[0053] Furthermore, since plate-shaped base materials are provided not only in the load-bearing section 12a but also in the non-load-bearing section 12b, the degree of freedom in the attachment position of ancillary components to the first structure 12 is increased. Examples of ancillary components include mailboxes, electric meters, gas meters, ventilation registers, rain gutters, shutter boxes, and exterior lighting.

[0054] (10) The first structure 12 includes a plurality of exterior materials 27 provided on the exterior side of the first base material 25 and the second base material 26. The plurality of exterior materials 27 are fixed to the first base material 25 and the second base material 26.

[0055] As described above, even if the thickness of the first insulation material 22 is partially reduced due to deterioration of the first insulation material 22, the position of the first base material 25 is unlikely to change, and therefore the position of the members fixed to the first base material 25 is unlikely to change. Similarly, even if the thickness of the second insulation material 23 is partially reduced due to deterioration of the second insulation material 23, the position of the second base material 26 is unlikely to change, and therefore the position of the members fixed to the second base material 26 is unlikely to change. Consequently, unevenness of the exterior material 27 caused by changes in the position of some of the exterior material 27 can be suppressed.

[0056] (11) The CLT 21 has an exposed surface 21a that is exposed to the interior. With this configuration, the wood grain of the CLT 21 is exposed to the interior, improving the interior design. In addition, it can provide changes in the interior due to the aging and beautification of the wood.

[0057] (12) The first structural element 12 is the exterior wall. The wooden frame is the column 32. CLT 21 is the wall material. With this configuration, a portion of the exterior wall can be made into a load-bearing wall by using CLT 21.

[0058] (13) The first structure 12 is constructed based on the timber frame construction method, but using CLT21 as load-bearing elements. This reduces the amount of CLT21 used compared to the CLT construction method, thus reducing costs.

[0059] (14) If the first base material 25 and the second base material 26 are rod-shaped base materials such as furring strips, then in the design stage of the building 10, it is necessary to set the positions of the first base material 25 and the second base material 26 taking into consideration the attachment positions of the ancillary structures to the first structural element 12. In contrast, in this embodiment, since the first base material 25 and the second base material 26 are plate-shaped, the design of the building 10 becomes easier.

[0060] (15) If the first base material 25 and the second base material 26 are rod-shaped base materials such as furring strips, depending on the attachment position of the ancillary objects to the first structure 12, the first base material 25 and the second base material 26 may not be positioned in an appropriate location. In this case, the exterior material 27 would have to be removed and the first base material 25 and the second base material 26 installed, which would require extensive construction work. In contrast, in this embodiment, since the first base material 25 and the second base material 26 are plate-shaped, the ancillary objects can be fixed to the first base material 25 or the second base material 26 regardless of the attachment position of the ancillary objects to the first structure 12.

[0061] (16) The movement of the CLT 21 during an earthquake is different from the movement of the first base material 25 and the second base material 26. Therefore, if the first base material 25 is firmly fixed to the CLT 21, the movement of the first base material 25 will be different from the movement of the second base material 26, which is not fixed to the CLT 21. When the movement of the first base material 25 and the movement of the second base material 26 are different in this way, a load is placed on the exterior material 27 that is fixed to the first base material 25 and the second base material 26.

[0062] In contrast, in this embodiment, the first insulation material 22 is positioned between the CLT 21 and the first base material 25, so that the first base material 25 is loosely fixed to the CLT 21. As a result, the difference between the movement of the first base material 25 and the movement of the second base material 26 is reduced. Consequently, the load on the exterior material 27 fixed to the first base material 25 and the second base material 26 can be reduced.

[0063] <Example of changes> The above embodiments are illustrative of possible forms that the building 10 may take, and are not intended to limit its form. The building 10 may take a form different from the form illustrated in the above embodiments. Examples of such forms include forms in which some of the configurations of the embodiments are replaced, modified, or omitted, or forms in which new configurations are added to the embodiments. Examples of modifications to the embodiments are shown below.

[0064] The first structure 12 may be a floor exposed to the outdoor space. The outdoor space may be, for example, an underfloor space or a piloti. In this case, the wooden axes aligned in the first direction D1 are horizontal members, and the CLT 21 is the flooring material.

[0065] The first structure 12 in the above embodiment had both a non-load-bearing section 12b provided between columns 32 on which the CLT 21 is installed, and a non-load-bearing section 12b provided between columns 32 other than those on which the CLT 21 is installed, but it may have only one of them.

[0066] The number of wooden shafts aligned in the first direction D1 may be changed as appropriate, provided there are multiple shafts. If there are two wooden shafts aligned in the first direction D1, the non-load-bearing section 12b is provided between the wooden shafts on which the CLT 21 is installed.

[0067] The position of the load-bearing section 12a in the first structure 12, that is, the position where the CLT 21 is provided in the first structure 12, may be changed as appropriate. The CLT 21 may be provided, for example, between the first column 32a and the second column 32b.

[0068] The first structure 12 may have two or more load-bearing sections 12a. The material and thickness of the first insulation material 22 may be appropriately changed according to the required thermal insulation performance for the load-bearing section 12a. The material and thickness of the second insulation material 23 may be appropriately changed according to the required thermal insulation performance for the non-load-bearing section 12b. The thickness of the first insulation material 22 may be greater than or equal to the thickness of the second insulation material 23. The thermal conductivity of the first insulation material 22 may be greater than or equal to the thermal conductivity of the second insulation material 23.

[0069] The first insulation material 22 does not need to be fixed to the CLT 21. • The first base material 25 may be a rod-shaped base material such as furring strips. The first base material 25 does not need to be fixed to the CLT 21, as long as it is fixed to the wooden frame 20.

[0070] The member used to fix the first base material 25 to the CLT 21 and the member used to fix the first insulation material 22 to the CLT 21 may be different. • The second base material 26 may be a rod-shaped base material such as furring strips.

[0071] • The CLT21 does not necessarily have to have an exposed surface 21a. The horizontal members 31 may be made of, for example, 150 mm wide laminated timber. In this case, the structural strength of the CLT 21 can be increased.

[0072] <Note> This specification discloses the following technologies: [Note 1] A building comprising a structure having a plurality of wooden shafts aligned in a first direction, wherein the structure comprises a load-bearing section having CLT provided between the wooden shafts in the first direction, and a non-load-bearing section in the first direction where CLT is not provided between the wooden shafts, wherein the load-bearing section has a first insulation material located on the outdoor side of the CLT, and the non-load-bearing section has the CLT, the first insulation material and a second insulation material aligned in the first direction.

[0073] [Note 2] In the building described in Appendix 1, the non-load-bearing portion is provided between the wooden framing where the CLT is installed.

[0074] [Note 3] In the building described in Appendix 1, three or more of the aforementioned wooden shafts are arranged in the first direction, and the non-load-bearing portion is provided between wooden shafts different from the wooden shafts where the CLT is provided.

[0075] [Note 4] In the building described in Appendix 1, the thickness of the first insulation material is thinner than the thickness of the second insulation material.

[0076] [Note 5] In the building described in Appendix 1, the thermal conductivity of the first insulation material is lower than the thermal conductivity of the second insulation material.

[0077] [Note 6] In the building described in Appendix 1, the load-bearing section is provided with a first base material located on the outdoor side of the first insulation material, and the first base material is in the form of a plate.

[0078] [Note 7] In the building described in Appendix 6, the first base material is fixed to the CLT. [Note 8] In the building described in Appendix 7, the first insulation material is placed between the first base material and the CLT, and the first base material is fixed to the CLT by wood screws that penetrate both the first base material and the first insulation material.

[0079] [Note 9] In the building described in Appendix 6, the non-load-bearing portion is provided with a second base material located on the outdoor side of the second insulation material, and the second base material is in the form of a plate.

[0080] [Note 10] In the building described in Appendix 9, the structure is provided on the outdoor side of the first and second base materials and comprises a plurality of exterior materials fixed to the first and second base materials.

[0081] [Note 11] In the building described in Appendix 1, the CLT has an exposed surface that is exposed to the interior. [Note 12] In the building described in Appendix 1, the structure is the exterior wall, the wooden frame is a column, and the CLT is a wall material. [Explanation of Symbols]

[0082] 10...Building, 12...First structural element as a structural body, 12a...Load-bearing part, 12b...Non-load-bearing part, 21...CLT, 21a...Exposed surface, 22...First insulation material, 23...Second insulation material, 25...First base material, 26...Second base material, 27...Exterior material, 29...Wood screw, 32...Column as a wooden shaft, D1...First direction.

Claims

1. The structure comprises multiple wooden shafts aligned in a first direction, The aforementioned structure is A load-bearing section having CLT provided between the wooden shafts in the first direction, In the first direction, a non-load-bearing section is provided between the wooden shafts where the CLT is not installed, A building having, The load-bearing section has a first insulation material located on the outdoor side of the CLT, The non-load-bearing portion has the CLT and the first insulation material and a second insulation material aligned in the first direction, The non-load-bearing portion is provided between the wooden framing where the CLT is installed. architecture.

2. The structure comprises multiple wooden shafts aligned in a first direction, The aforementioned structure is A load-bearing section having CLT provided between the wooden shafts in the first direction, In the first direction, a non-load-bearing section is provided between the wooden shafts where the CLT is not installed, A building having, The load-bearing section comprises a first insulation material located on the outdoor side of the CLT, and a first base material provided on the outdoor side of the first insulation material. The non-load-bearing portion has the CLT and the first insulation material and a second insulation material aligned in the first direction, The first base material is in the form of a plate and is fixed to the CLT. architecture.

3. Three or more of the aforementioned wooden shafts are arranged in the first direction, The non-load-bearing portion is located between wooden joists that are different from the wooden joists where the CLT is installed. The building according to claim 2.

4. The thickness of the first insulation material is thinner than the thickness of the second insulation material. The building according to claim 1 or 2.

5. The thermal conductivity of the first insulating material is lower than that of the second insulating material. The building according to claim 1 or 2.

6. With the first insulation material positioned between the first base material and the CLT, the first base material is fixed to the CLT by wood screws that penetrate both the first base material and the first insulation material. The building according to claim 2.

7. The non-load-bearing portion includes a second base material provided on the outdoor side of the second insulation material, The second base material is in the form of a plate. The building according to claim 2.

8. The structure is provided on the outdoor side of the first and second base materials and comprises a plurality of exterior materials fixed to the first and second base materials. The building according to claim 7.

9. The CLT has an exposed surface that is exposed indoors. The building according to claim 1 or 2.

10. The aforementioned structure is an exterior wall, the aforementioned wooden frame is a column, and the aforementioned CLT is a wall material. The building according to claim 1 or 2.

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