building

Abstract

We provide buildings that offer greater design flexibility. [Solution] The building comprises a frame. The frame comprises a reinforcing beam 10 and a first column 20 that supports the reinforcing beam 10. The reinforcing beam 10 has a first beam 50 and a second beam 60 that is shorter than the first beam 50 and connected to the first lower surface 52 of the first beam 50. The first end surface 51 of the first beam 50 faces the first direction A1 to which the reinforcing beam 10 extends. The second end surface 61 of the second beam 60, which faces the first direction A1, is located away from the first end surface 51 of the first beam 50 in the direction opposite to the first direction A1. The first column 20 is connected to the first lower surface 52 of the first beam 50 so as to be located between the first end surface 51 and the second end surface 61 in the first direction A1. The first column side surface 23 of the first column 20, which faces the first direction A1, is located away from the first end surface 51 of the first beam 50 in the direction opposite to the first direction A1.

Description

Technical Field

[0001] The present disclosure relates to buildings.

Background Art

[0002] A building structure in which a column is connected to the lower surface of a beam is known. In the structure disclosed in Patent Document 1, a continuous beam is used for the building frame. By adopting a continuous beam, the degree of freedom in the floor plan of the building is improved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, a beam configured by combining a first beam and a second beam shorter than the first beam is known. The second beam is coupled to the lower surface of the first beam. The end of the second beam is located near the end of the first beam. In this type of beam, the end of the first beam is supported by a column. And by providing such a beam between the first floor and the second floor, a large space can be formed under the beam on the first floor of the building.

[0005] However, in the above beam, since the second beam is coupled to the lower surface of the first beam, the position of the column supporting the beam is restricted. When the position of the column is restricted, the design of the building may be restricted. '

Means for Solving the Problems

[0006] (1) A building that solves the above problem is a building having a frame, the frame comprising a reinforcing beam having a first beam and a second beam that is shorter than the first beam and connected to the first lower surface of the first beam, and a first column that supports the reinforcing beam, wherein the first end face of the first beam faces a first direction in which the reinforcing beam extends, the second end face of the second beam faces the first direction and is located away from the first end face of the first beam in the direction opposite to the first direction, the first column is connected to the first lower surface of the first beam so as to be located between the first end face and the second end face in the first direction, and the first column side of the first column faces the first direction and is located away from the first end face of the first beam in the direction opposite to the first direction.

[0007] In this configuration, the first column is connected to the first lower surface of the first beam such that the first side surface of the first column is offset from the first end surface of the first beam in the direction opposite to the first direction. Therefore, below the reinforced beam, equipment such as load-bearing walls and fittings can be installed between the first end surface of the first beam and the first side surface of the first column. In addition, the first beam can be projected from the exterior wall of the building. This makes it possible to construct protruding structures such as verandas using the first beam as a framework. In this way, the degree of freedom in the design of the building can be improved.

[0008] (2) In the building described in (1) above, in the first direction, the first distance from the first end face of the first beam to the center line of the first column is greater than the second distance from the second end face of the second beam to the center line of the first column.

[0009] With this configuration, since the first distance is greater than the second distance, larger equipment can be placed between the first end face of the first beam and the first side of the first column below the reinforced beam, compared to the case where the first distance is less than or equal to the second distance. Also, when the first beam protrudes from the exterior wall of the building, the protruding distance of protruding structures such as verandas that use the first beam as a framework can be increased.

[0010] (3) In the building described in (1) or (2) above, the first beam has a first flange, a second flange, and a first web connecting the first flange and the second flange, and the second beam has a third flange and a second web connecting the second flange and the third flange of the first beam, and the second web is welded to the second flange such that it overlaps with the first web in plan view.

[0011] With this configuration, since the first beam is an H-shaped steel and the second beam is a T-shaped steel, the weight of the reinforced beam can be reduced compared to when the reinforced beam is constructed using two H-shaped steels.

[0012] (4) In any one of the buildings described in (1) to (3) above, the frame further comprises a load-bearing wall that extends in the first direction in a plan view and is positioned below the reinforcing beam, wherein the load-bearing wall is positioned between the first end face of the first beam and the first column side of the first column in the first direction.

[0013] With this configuration, a shear wall is positioned between the first end face of the first beam and the first side surface of the first column below the reinforced beam, so that the height of the shear wall can be aligned with the height of the first bottom surface of the first beam.

[0014] (5) In the building described in (4) above, the reinforcing beam is located between the first and second floors of the building, and the load-bearing wall has a first brace and a second brace that intersects the first brace in a front view, the first brace is connected to the first lower surface of the first beam and the lower end of the first column, and the second brace is connected to the upper end of the first column and the foundation of the building.

[0015] In conventional designs, if a first brace and a second brace are installed to form a shear wall on a beam where the end of the second beam is located near the end of the first beam, the height of the first brace will differ from the height of the second brace. Specifically, since the end of the first brace is connected to the end of the first beam, while the end of the second brace is connected to the underside of the second beam, the height of the first brace will differ from the height of the second brace. As a result, the balance between the strength in the direction along the first brace and the strength in the direction along the second brace in the shear wall will be different, which may reduce the effectiveness of the shear wall. In this respect, with the above configuration, since the first column is connected to the first underside of the first beam, the difference between the height of the first brace and the height of the second brace can be reduced compared to the case where the first column is connected to the second underside of the second beam.

[0016] (6) The building according to (4) or (5) above, further comprising a first exterior wall, wherein the first exterior wall extends in the first direction in a plan view and is positioned differently from the reinforcing beam in a second direction intersecting the first direction, and the first exterior wall is provided with an opening.

[0017] In this configuration, the building comprises a reinforcing beam extending in a first direction and a first column supporting the reinforcing beam. Furthermore, the building has a first exterior wall at a different location from the reinforcing beam, and a load-bearing wall below the reinforcing beam. In the building, the overall strength of the building 1 is improved by providing a load-bearing wall below the reinforcing beam, making it possible to reduce the strength of other parts. In this configuration, the provision of a load-bearing wall below the reinforcing beam allows for larger openings in the first exterior wall.

[0018] (7) In any one of the buildings described in (1) to (3) above, the building further comprises a second exterior wall and a protruding structure projecting from the second exterior wall into the outdoor space of the building, wherein the second exterior wall extends in a second direction intersecting the first direction in a plan view, the first column is provided within the second exterior wall, at least a portion of the reinforcing beam is located in the outdoor space, and the portion of the reinforcing beam located in the outdoor space supports the protruding structure.

[0019] According to this configuration, while a large space can be formed indoors in the building by the reinforced beams, the protruding structural part can be supported by the beams in the outdoor space. Therefore, compared with the case where the beams for forming a large space indoors and the beams for supporting the protruding structural part in the outdoor space are provided separately, the number of beams in the whole building can be reduced.

Effects of the Invention

[0020] According to the building of the present disclosure, the degree of freedom in the design of the building can be improved.

Brief Description of the Drawings

[0021] [Figure 1] It is a schematic view of a building according to the first embodiment. [Figure 2] In the building of FIG. 1, it is a schematic view of the building body seen from above the reinforced beam. [Figure 3] It is a front view of the connection part between the reinforced beam and the first column in FIG. 1. [Figure 4] It is a plan view of the connection part between the reinforced beam and the first column in FIG. 1. [Figure 5] It is a cross-sectional view of the reinforced beam in FIG. 1. [Figure 6] It is a front view of the shear wall in FIG. 1. [Figure 7] It is a schematic view of a building according to the second embodiment. [Figure 8] In the building of FIG. 7, it is a schematic view of the building body seen from above the reinforced beam. [Figure 9] It is a front view of the connection part between the reinforced beam and the first column in FIG. 7. [Figure 10] It is a plan view of the connection part between the reinforced beam and the first column in FIG. 7.

Modes for Carrying Out the Invention

[0022] <First Embodiment> Referring to FIGS. 1 to 6, the building 1 according to the first embodiment will be described. The building 1 is, for example, a detached house, an apartment house, a commercial facility, a public facility, etc. In this embodiment, it will be described as a detached house.

[0023] <Buildings> As shown in Figure 1, building 1 comprises a structural frame 2. The structural frame 2 comprises a reinforcing beam 10 and a first column 20 that supports the reinforcing beam 10. The reinforcing beam 10 extends in a first direction A1. In the example in Figure 1, the reinforcing beam 10 is located between the first and second floors of building 1.

[0024] The first column 20 is placed on the foundation 3 of the building 1. The first column 20 supports the portion of the reinforced beam 10 that is inward of the end. By having the first column 20 support the portion of the reinforced beam 10 that is inward of the end, the amount of deflection in the central part of the reinforced beam 10 can be reduced compared to when the first column 20 supports the end of the reinforced beam 10.

[0025] Building 1 comprises a space S1. Space S1 is, for example, the living room, dining room, and kitchen (LDK) of Building 1. Space S1 is, for example, a large space located on the first floor of Building 1. Space S1 does not have columns such as the first column 20. In Figures 1 and 2, space S1 is the area enclosed by the dashed line. In the example in Figure 1, the central part of the reinforced beam 10 is located above space S1.

[0026] In this embodiment, the frame 2 further includes a support beam 30. The support beam 30 supports the end of the reinforced beam 10. The support beam 30 is supported by a second column 31. The end of the reinforced beam 10 may also be supported by a column other than the support beam 30.

[0027] Building 1 includes an exterior wall 4. Support beams 30 and second columns 31 are arranged, for example, inside the exterior wall 4. The exterior wall 4 separates the interior from the exterior of building 1.

[0028] The structural frame 2 further includes a shear wall 40. The shear wall 40 extends in a first direction A1 in a plan view. The shear wall 40 is positioned below the reinforced beam 10. In the first direction A1, the shear wall 40 is located between the first column 20 and the second column 31.

[0029] As shown in Figure 2, the structure 2 is provided with, for example, multiple reinforcing beams 10. The multiple reinforcing beams 10 are spaced apart in a second direction A2 that intersects a first direction A1 in a plan view. Connecting beams 10X extending in the second direction A2 are placed between the multiple reinforcing beams 10. The connecting beams 10X are connected to the sides of the reinforcing beams 10. The connecting beams 10X are made of, for example, H-shaped steel similar to the first beam 50 of the reinforcing beams 10.

[0030] Building 1 further comprises a first exterior wall 5. The first exterior wall 5 is part of the exterior wall 4. The first exterior wall 5 extends in a first direction A1 in a plan view. The first exterior wall 5 is positioned differently from the reinforcing beam 10 in a second direction A2. An opening 6 is provided in the first exterior wall 5.

[0031] Opening 6 is an opening that connects the interior and exterior of building 1. Opening 6 is, for example, a window. Opening 6 connects, for example, space S1 within the interior space to the exterior space.

[0032] Two shear wall structures 5Y are provided in the first exterior wall 5. The shear wall structures 5Y are positioned below the beam 5X that supports the first exterior wall 5. In Figure 2, the areas where the shear wall structures 5Y and shear wall 40 are provided are indicated by dot hatching. The opening 6 is provided between the two shear wall structures 5Y in the first direction A1. The shear wall structures 5Y have the same structure as, for example, the shear wall 40. In structural calculations for building 1, it is preferable that the height of the shear wall structures 5Y is approximately equal to the height of the shear wall 40.

[0033] <Reinforced beam> As shown in Figure 1, the reinforced beam 10 has a first beam 50 and a second beam 60. The second beam 60 is shorter than the first beam 50. The second beam 60 is connected to the first lower surface 52 of the first beam 50. The second beam 60 is located, for example, above space S1. By using the reinforced beam 10 in which the second beam 60 is connected to the first lower surface 52 of the first beam 50, a large space can be created below the second beam 60 in building 1. In the example in Figure 1, space S1 can be created as a large space by using the reinforced beam 10.

[0034] As shown in Figures 3 and 4, the first end face 51 of the first beam 50 faces the first direction A1. A support beam 30 is connected to the first end face 51. The support beam 30 is, for example, an H-shaped steel beam. The first end face 51 of the first beam 50 is fixed to the support beam 30 by, for example, a fixing bracket 32. The fixing bracket 32 ​​is fixed to the web of the support beam 30 by a fixing member such as a bolt, with the first web 55 of the first beam 50 sandwiched between the first end face 51 of the first beam 50.

[0035] The second end face 61 of the second beam 60 faces the first direction A1. The second end face 61 of the second beam 60 is located away from the first end face 51 of the first beam 50 in the direction opposite to the first direction A1. Below the second lower surface 62 of the second beam 60, the ceiling 1X of the first floor of the building 1 is provided. The ceiling 1X is composed of ceiling members such as ceiling panels placed below the reinforcing beam 10. The ceiling 1X is located above the space S1.

[0036] An arrangement surface 11 is provided on the first lower surface 52 of the first beam 50, in the first direction A1, in the portion located between the first end surface 51 of the first beam 50 and the second end surface 61 of the second beam 60. The upper end portion 21 of the first column 20 is attached to the arrangement surface 11.

[0037] In the first beam 50, below the arrangement surface 11, a first inner wall 7 extending in the second direction A2 and a second inner wall 8 extending in the first direction A1 are arranged. The first inner wall 7 is arranged, for example, across multiple arrangement surfaces 11 in multiple reinforcing beams 10 aligned in the second direction A2. A first column 20 is arranged inside the first inner wall 7. The second inner wall 8 is provided between the first inner wall 7 and the outer wall 4. The first inner wall 7 and the second inner wall 8 partition the indoor space of the building 1.

[0038] Interior furnishings such as curtain boxes may be placed in the space below the arrangement surface 11. Such furnishings may be placed, for example, between the second end surface 61 of the second beam 60 and the first interior wall 7. Between the second end surface 61 of the second beam 60 and the first interior wall 7, the height of the ceiling 1X is set to match the height of the first lower surface 52 of the first beam 50.

[0039] As shown in Figure 5, the first beam 50 has a first flange 53, a second flange 54, and a first web 55. The first web 55 connects the first flange 53 and the second flange 54. The second beam 60 has a third flange 63 and a second web 64. The second web 64 connects the second flange 54 and the third flange 63 of the first beam 50. In one example, the first beam 50 is an H-shaped steel beam and the second beam 60 is a T-shaped steel beam. The second beam 60 is joined to the first beam 50 by welding. The second web 64 is welded to the second flange 54 so that it overlaps with the first web 55 in a plan view.

[0040] The first height H1 of the first beam 50 is greater than the second height H2 of the second beam 60. The first height H1 is, for example, 200 mm. The second height H2 is, for example, 98 mm. The second height H2 is set according to the height of the ceiling 1X of the space S1 of the building 1. The second height H2 of the second beam 60 may be equal to the first height H1 of the first beam 50.

[0041] <Pillar 1> As shown in Figure 3, the first column 20 is connected to the first lower surface 52 of the first beam 50 so as to be located between the first end surface 51 of the first beam 50 and the second end surface 61 of the second beam 60 in the first direction A1. The first column 20 is connected to the first lower surface 52 of the first beam 50 by attaching the upper end portion 21 of the first column 20 to the second flange 54 of the first beam 50 with fixing members such as bolts. The lower end portion 22 of the first column 20 is connected to, for example, the foundation 3 (see Figure 6).

[0042] The first column side 23 of the first column 20 faces the first direction A1. The first column side 23 of the first column 20 is located away from the first end face 51 of the first beam 50 in the direction opposite to the first direction A1. The second column side 24 of the first column 20 faces the direction opposite to the first direction A1. The second column side 24 of the first column 20 is the end face of the first column 20 opposite to the first column side 23. The second column side 24 of the first column 20 is located away from the second end face 61 of the second beam 60 in the first direction A1. The second column side 24 of the first column 20 faces the second end face 61 of the second beam 60.

[0043] The length of the first beam 50 in the first direction A1 is, for example, 6000 mm or more and 8000 mm or less. The length of the first beam 50 in the first direction A1 is, for example, 8000 mm. The length of the second beam 60 in the first direction A1 is, for example, 5000 mm or more and 7000 mm or less. The length of the second beam 60 in the first direction A1 is, for example, 5360 mm. The distance L from the first end face 51 of the first beam 50 to the second end face 61 of the second beam 60 is, for example, 1000 mm or more and 2000 mm or less. The distance L is, for example, 1320 mm.

[0044] The first distance L1 from the first end face 51 of the first beam 50 to the centerline CL of the first column 20 is greater than the second distance L2 from the second end face 61 of the second beam 60 to the centerline CL of the first column 20. The centerline CL passes through the center of the first column 20 in the first direction A1. The first distance L1 is, for example, 1000 mm. The second distance L2 is, for example, 320 mm.

[0045] <Load-bearing wall> As shown in Figure 6, the shear wall 40 is positioned between the first end face 51 of the first beam 50 and the first column side surface 23 of the first column 20 in the first direction A1. In the vertical direction, the shear wall 40 is positioned between the reinforced beam 10 and the foundation 3.

[0046] The load-bearing wall 40 has a first brace 41 and a second brace 42. The second brace 42 intersects the first brace 41 in a front view. The first brace 41 and the second brace 42 are located inside the second interior wall 8. The first brace 41 and the second brace 42 are concealed, for example, by the sheathing material of the second interior wall 8.

[0047] The first brace 41 is connected to the first lower surface 52 of the first beam 50 and the lower end 22 of the first column 20. One end of the first brace 41 is attached, for example, to a first fitting 43 which is fixed to the first lower surface 52 of the first beam 50. The other end of the first brace 41 is attached, for example, to a second fitting 44 which is fixed to the lower end 22 of the first column 20.

[0048] The second brace 42 is connected to the upper end 21 of the first column 20 and the foundation 3 of the building 1. One end of the second brace 42 is attached to a third fitting 45, for example, which is fixed to the upper end 21 of the first column 20. The other end of the second brace 42 is attached to a fourth fitting 46, for example, which is fixed to the foundation 3 of the building 1.

[0049] In the example shown in Figure 6, the first fitting 43, which fixes one end of the first brace 41 to the first lower surface 52 of the first beam 50, is positioned so as to roughly overlap with the first end surface 51 of the first beam 50 in the vertical direction. Similarly, the fourth fitting 46, which fixes the other end of the second brace 42 to the foundation 3 of the building 1, is also positioned so as to roughly overlap with the first end surface 51 of the first beam 50 in the vertical direction. The first fitting 43 and the fourth fitting 46 may be positioned at a distance from the first end surface 51 of the first beam 50 in the direction opposite to the first direction A1. This allows for the provision of fittings such as doors between the load-bearing wall 40 and the outer wall 4 in the second inner wall 8.

[0050] <Operation of this embodiment> The first operation of this embodiment will now be described. In building 1, a large space is formed below the second beam 60 by the reinforced beam 10, and equipment such as a shear wall 40 can be placed between the first column side 23 of the first column 20 and the first end face 51 of the first beam 50 below the reinforced beam 10. Since the first column side 23 of the first column 20 is positioned away from the first end face 51 of the first beam 50 in the direction opposite to the first direction A1, the height between the first column side 23 of the first column 20 and the first end face 51 of the first beam 50 below the arrangement surface 11 becomes constant. This simplifies the structure of the equipment placed below the reinforced beam 10.

[0051] The second operation of this embodiment will now be described. In building 1, a load-bearing wall 40 is located below the layout surface 11. If the height of the first brace 41 in the load-bearing wall 40 differs significantly from the height of the second brace 42, the structural calculations for building 1 become complicated. However, in building 1, since the height of the space below the layout surface 11 where the load-bearing wall 40 is located is constant, the heights of the first brace 41 and the second brace 42 can be made roughly the same.

[0052] The third function of this embodiment will now be described. In building 1, an opening 6 is provided in the first exterior wall 5. The first exterior wall 5 extends in the first direction A1, which is the direction in which the reinforcing beam 10 extends. Since a load-bearing wall 40 is provided below the reinforcing beam 10, the number of load-bearing walls and other structures extending in the first direction A1 can be reduced compared to the case where a load-bearing wall 40 is not provided below the reinforcing beam 10.

[0053] <Effects of this embodiment> The effects of this embodiment will now be explained. (1-1) The building 1 comprises a frame 2. The frame 2 comprises a reinforcing beam 10 and a first column 20 that supports the reinforcing beam 10. The reinforcing beam 10 extends in a first direction A1. The reinforcing beam 10 has a first beam 50 and a second beam 60. The second beam 60 is shorter than the first beam 50. The second beam 60 is connected to the first lower surface 52 of the first beam 50. The first end surface 51 of the first beam 50 faces the first direction A1. The second end surface 61 of the second beam 60 faces the first direction A1. The second end surface 61 of the second beam 60 is located away from the first end surface 51 of the first beam 50 in the direction opposite to the first direction A1. The second direction A2 is the opposite direction to the first direction A1. The first column 20 is connected to the first lower surface 52 of the first beam 50 so as to be located between the first end surface 51 and the second end surface 61. The first column side surface 23 of the first column 20 faces the first direction A1. The first column side surface 23 of the first column 20 is located away from the first end surface 51 of the first column 20 in the direction opposite to the first direction A1.

[0054] In this configuration, the first column 20 is connected to the first lower surface 52 of the first beam 50 such that the first column side surface 23 of the first column 20 is offset from the first end surface 51 of the first beam 50 in the direction opposite to the first direction A1. Therefore, below the reinforced beam 10, equipment such as load-bearing walls and fittings can be installed between the first end surface 51 of the first beam 50 and the first column side surface 23 of the first column 20. In addition, the first beam 50 can be projected from the outer wall 4 of the building 1. This makes it possible to construct a projecting structure such as a veranda using the first beam 50 as a framework. In this way, the design freedom of the building 1 can be improved.

[0055] (1-2) In the first direction A1, the first distance L1 from the first end face 51 of the first beam 50 to the centerline CL of the first column 20 is greater than the second distance L2 from the second end face 61 of the second beam 60 to the centerline CL of the first column 20.

[0056] With this configuration, since the first distance L1 is greater than the second distance L2, a larger piece of equipment can be placed between the first end face 51 of the first beam 50 and the first column side 23 of the first column 20 below the reinforced beam 10, compared to the case where the first distance L1 is less than or equal to the second distance L2. Also, when the first beam 50 protrudes from the outer wall 4 of the building 1, the protruding distance of protruding structures such as verandas that use the first beam 50 as a framework can be increased.

[0057] (1-3) The first beam 50 has a first flange 53, a second flange 54, and a first web 55. The first web 55 connects the first flange 53 and the second flange 54. The second beam 60 has a third flange 63 and a second web 64. The second web 64 connects the second flange 54 and the third flange 63 of the first beam 50. The second web 64 is welded to the second flange 54 so that it overlaps with the first web 55 in plan view.

[0058] With this configuration, since the first beam 50 is an H-shaped steel and the second beam 60 is a T-shaped steel, the reinforced beam 10 can be made lighter compared to when the reinforced beam 10 is made of two H-shaped steels.

[0059] (1-4) The structural frame 2 further comprises a shear wall 40. The shear wall 40 extends in a first direction A1 in a plan view. The shear wall 40 is positioned below the reinforced beam 10. The shear wall 40 is positioned in the first direction A1 between the first end face 51 of the first beam 50 and the first column side surface 23 of the first column 20.

[0060] With this configuration, a shear wall 40 is positioned between the first end face 51 of the first beam 50 and the first column side 23 of the first column 20 below the reinforced beam 10, so that the height of the shear wall 40 can be aligned with the height of the first lower surface 52 of the first beam 50.

[0061] (1-5) The reinforcing beam 10 is positioned between the first and second floors of the building 1. The load-bearing wall 40 has a first brace 41 and a second brace 42. The second brace 42 intersects with the first brace 41 in a front view. The first brace 41 is connected to the first lower surface 52 of the first beam 50 and the lower end 22 of the column. The second brace 42 is connected to the upper end 21 of the first column 20 and the foundation 3 of the building 1.

[0062] In conventional designs, if a first brace and a second brace are provided to a beam such that the end of the second beam is located near the end of the first beam, the height of the first brace will differ from the height of the second brace. Specifically, since the end of the first brace is connected to the end of the first beam, while the end of the second brace is connected to the underside of the second beam, the height of the first brace will differ from the height of the second brace. As a result, the balance between the strength in the direction along the first brace and the strength in the direction along the second brace in the shear wall will be different, which may reduce the effectiveness of the shear wall. In this regard, with the above configuration, since the first column 20 is connected to the first underside 52 of the first beam 50, the difference between the height of the first brace 41 and the height of the second brace 42 can be reduced compared to the case where the first column 20 is connected to the second underside 62 of the second beam 60.

[0063] (1-6) The building 1 has a first exterior wall 5. The first exterior wall 5 extends in a first direction A1 in a plan view. The first exterior wall 5 is positioned differently from the reinforcing beam 10 in a second direction A2 that intersects with the first direction A1. An opening 6 is provided in the first exterior wall 5.

[0064] In this configuration, building 1 comprises a reinforcing beam 10 extending in a first direction A1 and a first column 20 supporting the reinforcing beam 10. Furthermore, building 1 has a first exterior wall 5 in a second direction A2 at a different position from the reinforcing beam 10, and a load-bearing wall 40 is provided below the reinforcing beam 10. In building 1, the overall strength of building 1 is improved by providing the load-bearing wall 40 below the reinforcing beam 10, making it possible to reduce the strength of other parts. In this configuration, the opening 6 in the first exterior wall 5 can be made larger by providing the load-bearing wall 40 below the reinforcing beam 10.

[0065] <Second Embodiment> The building 1 according to the second embodiment will be described with reference to Figures 7 to 10. In this embodiment, components that are substantially unchanged from those of the first embodiment are given the same reference numerals as those of the first embodiment, and their descriptions are omitted.

[0066] In this embodiment, at least a portion of the reinforcing beam 10 is placed in the outdoor space of the building 1. The portion of the reinforcing beam 10 placed in the outdoor space supports the protruding structure 70.

[0067] As shown in Figures 7 and 8, the building 1 of this embodiment comprises a second exterior wall 9 and a protruding structure 70. The second exterior wall 9 is part of the exterior wall 4 of the building 1. The second exterior wall 9 extends in the second direction A2.

[0068] The end of the first beam 50 of the reinforced beam 10 is located in the outdoor space of building 1. The second beam 60 of the reinforced beam 10 is located in the indoor space of building 1. In the example in Figure 7, the second beam 60 is located above space S1. In plan view, the protruding structural part 70 does not overlap with the second beam 60 of the reinforced beam 10.

[0069] The protruding structure 70 projects from the second exterior wall 9 into the outdoor space of the building 1. In plan view, the protruding structure 70 is positioned away from space S1. The protruding structure 70 is configured to be accessible from, for example, the second floor of the building 1. The protruding structure 70 is, for example, a balcony or a veranda. A portion of the first floor of the building 1 may be provided below the protruding structure 70.

[0070] As shown in Figures 9 and 10, the reinforcing beam 10 of this embodiment is constructed in accordance with the reinforcing beam 10 of the first embodiment. The first column 20 of this embodiment is provided within the second outer wall 9. The protruding structure 70 is positioned away from the first column side surface 23 of the first column 20 in the first direction A1.

[0071] In the multiple reinforced beams 10, the first end faces 51 of the multiple first beams 50 are connected by connecting beams 30X. The connecting beams 30X extend in the second direction A2 (see Figure 8). The connecting beams 30X are constructed similarly to the support beams 30 of the first embodiment, except that they are not supported by the second column 31. The connecting beams 30X may be supported by columns similar to the second column 31.

[0072] The protruding structure 70 has a wall portion 71 and a floor portion 72. The wall portion 71 constitutes the handrail of the protruding structure 70. In plan view, the wall portion 71 surrounds the floor portion 72. The wall portion 71 has a first wall portion 71A extending in a first direction A1 in plan view and a second wall portion 71B extending in a second direction A2 in plan view.

[0073] The floor portion 72 constitutes the floor of the protruding structure portion 70. For example, a person can stand on the floor of the protruding structure portion 70. The floor portion 72 has a floor surface portion 72A that constitutes the floor surface of the protruding structure portion 70, and a bracket 72B that supports the floor surface portion 72A. The bracket 72B is fixed to the portion of the reinforcing beam 10 that is located in the outdoor space. Specifically, the bracket 72B is fixed to the first flange 53 of the first beam 50 by fixing members such as bolts.

[0074] <Operation of this embodiment> The operation of this embodiment will now be explained. In the building 1 of this embodiment, the portion of the reinforced beam 10 that is located in the outdoor space supports the protruding structure 70. By extending the reinforced beam 10, which is used to form a large space, into the outdoor space and supporting the protruding structure 70 with the extended portion, the structure of the building frame 2 can be simplified.

[0075] <Effects of this embodiment> The effects of this embodiment will now be explained. (2) The building 1 further comprises a second exterior wall 9 and a protruding structural part 70. The protruding structural part 70 protrudes from the second exterior wall 9 into the outdoor space of the building 1. The second exterior wall 9 extends in a second direction A2. The second direction A2 intersects with the first direction A1 in a plan view. The first column 20 is provided within the second exterior wall 9. At least a portion of the reinforcing beam 10 is located in the outdoor space. The portion of the reinforcing beam 10 located in the outdoor space supports the protruding structural part 70.

[0076] With this configuration, the reinforced beam 10 can create a large open space inside the building 1, while the reinforced beam 10 can also support the protruding structural part 70 in the outdoor space. Therefore, compared to the case where separate beams are provided for creating a large open space indoors and for supporting the protruding structural part 70 in the outdoor space, the total number of beams in the building can be reduced.

[0077] <Variation> The embodiments described above are illustrative of possible forms of Building 1 and are not intended to limit its form. Building 1 may take forms different from those illustrated in the embodiments described above. Examples include forms in which parts of the configuration of each embodiment are replaced, modified, or omitted, or forms in which new configurations are added to each embodiment. Modifications of each embodiment are shown below.

[0078] In this embodiment, one end of the reinforced beam 10 was described as an example, but the other end of the reinforced beam 10 may also be constructed in a manner similar to that of one end of the reinforced beam 10.

[0079] The first distance L1 from the first end face 51 of the first beam 50 to the first column 20 may be equal to or less than the second distance L2 from the second end face 61 of the second beam 60 to the first column 20. The position of the first column 20 on the arrangement surface 11 can be freely changed as long as the first column side surface 23 of the first column 20 is located away from the first end face 51 of the first beam 50 in the direction opposite to the first direction A1.

[0080] While an H-shaped steel beam was given as an example of the first beam 50 and a T-shaped steel beam as an example of the second beam 60, the first beam 50 and the second beam 60 are not limited to these examples. For example, both the first beam 50 and the second beam 60 may be made of H-shaped steel beams. Not limited to steel, at least one of the first beam 50 and the second beam 60 may be made of wood.

[0081] In the first embodiment, Figure 2 shows that the load-bearing wall 40 is located only under one reinforced beam 10, but in the building 1, load-bearing walls 40 may be located under two or more reinforced beams 10.

[0082] In the first embodiment, the first brace 41 and the second brace 42 of the load-bearing wall 40 may be wooden diagonal braces.

[0083] In the first embodiment, a seismic damper may be provided below the mounting surface 11 in addition to, or instead of, the load-bearing wall 40. In this modified example, the load on the load-bearing wall 40 can be reduced by the seismic damper.

[0084] This specification discloses the following technologies: [Note 1] A building comprising a frame, the frame comprising a reinforcing beam having a first beam and a second beam shorter than the first beam and connected to the first lower surface of the first beam, and a first column supporting the reinforcing beam, wherein the first end face of the first beam faces a first direction in which the reinforcing beam extends, the second end face of the second beam faces the first direction and is located away from the first end face of the first beam in the direction opposite to the first direction, the first column is connected to the first lower surface of the first beam so as to be located between the first end face and the second end face in the first direction, and the first column side of the first column faces the first direction and is located away from the first end face of the first beam in the direction opposite to the first direction.

[0085] [Note 2] The building as described in Appendix 1, wherein, in the first direction, the first distance from the first end face of the first beam to the centerline of the first column is greater than the second distance from the second end face of the second beam to the centerline of the first column.

[0086] [Note 3] The building as described in Appendix 1, wherein the first beam has a first flange, a second flange, and a first web connecting the first flange and the second flange, and the second beam has a third flange and a second web connecting the second flange and the third flange of the first beam, and the second web is welded to the second flange so as to overlap the first web in a plan view.

[0087] [Note 4] The building according to any one of the appendices 1 to 3, wherein the frame further comprises a load-bearing wall that extends in the first direction in a plan view and is positioned below the reinforcing beam, and the load-bearing wall is positioned between the first end face of the first beam and the first column side surface of the first column in the first direction.

[0088] [Note 5] The building as described in Appendix 4, wherein the reinforcing beam is located between the first and second floors of the building, and the load-bearing wall has a first brace and a second brace that intersects the first brace in a front view, the first brace is connected to the first lower surface of the first beam and the lower end of the first column, and the second brace is connected to the upper end of the first column and the foundation of the building.

[0089] [Note 6] The building according to Appendix 4, further comprising a first exterior wall, the first exterior wall extending in the first direction in a plan view and positioned differently from the reinforcing beam in a second direction intersecting the first direction, and the first exterior wall having an opening.

[0090] [Note 7] The building according to any one of the appendices 1 to 3, further comprising a second exterior wall and a projecting structure projecting from the second exterior wall into the outdoor space of the building, wherein the second exterior wall extends in a second direction intersecting the first direction in a plan view, the first column is provided within the second exterior wall, at least a portion of the reinforcing beam is located in the outdoor space, and the portion of the reinforcing beam located in the outdoor space supports the projecting structure. [Explanation of symbols]

[0091] 1...Building, 2...Structure, 3...Foundation, 5...First exterior wall, 6...Opening, 9...Second exterior wall, 10...Reinforcement beam, 20...First column, 21...Upper end, 22...Lower end, 23...Side of first column, 40...Shear wall, 41...First brace, 42...Second brace, 50...First beam, 51...First end face, 52...First bottom face, 53...First flange, 54...Second flange, 55...First web, 60...Second beam, 61...Second end face, 63...Third flange, 64...Second web, 70...Protruding structural part.

Claims

1. A building that has a structural frame, The aforementioned structure is A reinforced beam having a first beam and a second beam that is shorter than the first beam and connected to the first lower surface of the first beam, The system comprises a first column that supports the aforementioned reinforcing beam, The first end face of the first beam faces the first direction in which the reinforcing beam extends. The second end face of the second beam faces the first direction and is located away from the first end face of the first beam in the direction opposite to the first direction. The first column is connected to the first lower surface of the first beam so as to be located between the first end surface and the second end surface in the first direction. The first column side of the first column faces the first direction and is located away from the first end face of the first beam in the direction opposite to the first direction. architecture.

2. In the first direction, the first distance from the first end face of the first beam to the centerline of the first column is greater than the second distance from the second end face of the second beam to the centerline of the first column. The building described in claim 1.

3. The first beam has a first flange, a second flange, and a first web connecting the first flange and the second flange. The second beam has a third flange and a second web connecting the second flange and the third flange of the first beam. The second web is welded to the second flange such that it overlaps with the first web in a plan view. The building described in claim 1.

4. The aforementioned structural body further comprises a load-bearing wall that extends in the first direction in a plan view and is positioned below the reinforcing beam, The load-bearing wall is positioned between the first end face of the first beam and the first column side surface of the first column in the first direction. A building according to any one of claims 1 to 3.

5. The reinforcing beam is positioned between the first and second floors of the building. The load-bearing wall has a first brace and a second brace that intersects the first brace in a front view. The first brace is connected to the first lower surface of the first beam and the lower end of the first column. The second brace is connected to the upper end of the first column and the foundation of the building. The building according to claim 4.

6. Further equipped with a first outer wall, The first outer wall extends in the first direction in a plan view and is positioned differently from the reinforcing beam in a second direction that intersects the first direction. An opening is provided in the first outer wall. The building according to claim 4.

7. The building further comprises a second exterior wall and a protruding structural portion that extends from the second exterior wall into the outdoor space of the building. The second outer wall extends in a second direction that intersects the first direction in a plan view, The first column is provided within the second outer wall, At least a portion of the reinforcing beam is placed in the outdoor space. The portion of the reinforcing beam that is placed in the outdoor space supports the protruding structure. A building according to any one of claims 1 to 3.

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