Exterior wall structure

Abstract

To provide an exterior wall structure capable of securing an opening in an exterior wall while preventing an interior slab from being visible through the opening.SOLUTION: An exterior wall structure comprises: multiple first exterior wall panels 30 spaced laterally and vertically; multiple second exterior wall panels 42 spaced laterally between the first exterior wall panels 30 in a vertical direction and joined to the first exterior wall panels 30 above and below; and a sleeve wall 44 provided between the second exterior wall panels 42 laterally adjacent and formed integrally with the second exterior wall panel 42.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an exterior wall structure. [Background technology]

[0002] The following Patent Document 1 shows an exterior wall structure formed using panel materials arranged at intervals in the horizontal direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-20231 A Summary of the Invention [Problem to be solved by the invention]

[0004] As shown in the above-mentioned Patent Document 1, by arranging the panels at intervals in the horizontal direction, it is possible to form an opening in the exterior wall, but the end face of the slab inside the building can be seen from the outside through the opening. In this way, it may not necessarily be desirable from a design perspective for the end face of the slab to be visible from the outside.

[0005] In consideration of the above-mentioned circumstances, the present invention aims to provide an exterior wall structure that can ensure an opening in the exterior wall while preventing the internal slab from being visible through the opening. [Means for solving the problem]

[0006] The exterior wall structure of claim 1 comprises a plurality of first exterior wall panels arranged at intervals in the horizontal and vertical directions, a plurality of second exterior wall panels arranged at intervals in the horizontal direction between the vertical directions of the first exterior wall panels and joined to the first exterior wall panels above and below, and a sleeve wall provided between adjacent second exterior wall panels in the horizontal direction and formed integrally with the second exterior wall panel.

[0007] In the exterior wall structure of claim 1, the first exterior wall panels are arranged with a gap between them in the lateral direction, thereby forming an opening between the first exterior wall panels.

[0008] In addition, second exterior wall panels are joined above and below the first exterior wall panel, which allows stress to be transmitted between the first exterior wall panel and the second exterior wall panel.

[0009] Furthermore, a sleeve wall is provided between the second exterior wall panels. If a slab is placed at a height corresponding to the sleeve wall inside the building, the end face of the slab can be prevented from being seen from the outside.

[0010] An exterior wall structure according to claim 2 is the exterior wall structure according to claim 1, wherein the sleeve wall is formed by chamfering the second exterior wall panel and has a height lower than that of the second exterior wall panel.

[0011] In the exterior wall structure of claim 2, the sleeve wall is formed with a beveled surface from the second exterior wall panel, so that a shaded appearance can be formed. Also, the sleeve wall is lower in height than the second exterior wall panel. Therefore, a gap is formed between the sleeve wall and the first exterior wall panel. This gap can be used as an opening or ventilation hole.

[0012] An exterior wall structure according to claim 3 is the exterior wall structure according to claim 1 or 2, in which the height of the first exterior wall panel and the height of the second exterior wall panel are each lower than the height of one floor of a building.

[0013] In the exterior wall structure of claim 3, the height of the first exterior wall panel and the height of the second exterior wall panel are each lower than the height of one layer of the building. In other words, one layer of the building cannot be formed by only the first exterior wall panel or only the second exterior wall panel. For this reason, it is necessary to form one layer of the building by combining the first exterior wall panel and the second exterior wall panel. As a result, the second exterior wall panel and the sleeve wall are arranged in each layer of the building. Therefore, all the slabs can be arranged inside the second exterior wall panel and the sleeve wall.

[0014] The exterior wall structure of claim 4 is the exterior wall structure of claim 1 or 2, in which the second exterior wall panel is a structural member and the sleeve wall is a non-structural member, and the second exterior wall panel and the sleeve wall are integrally molded as a precast concrete panel.

[0015] According to the exterior wall structure of claim 4, the second exterior wall panel is a structural member, and the sleeve wall is a non-structural member. In other words, the structural strength of the exterior wall is ensured by the first exterior wall panel and the second exterior wall panel. Therefore, the thickness and height of the sleeve wall can be freely set. This allows for greater design freedom compared to a configuration in which the sleeve wall is a structural member.

[0016] In addition, the exterior wall structure of claim 4 may be an exterior wall structure described in any one of claims 1 to 3, in which the second exterior wall panel is a structural member, the sleeve wall is a non-structural member, and the second exterior wall panel and the sleeve wall are integrally molded as a precast concrete panel. Effect of the Invention

[0017] According to the exterior wall structure of the present invention, it is possible to prevent the internal slab from being visible through an opening while ensuring an opening in the exterior wall. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1A is a plan view showing an example of a building to which an exterior wall structure according to an embodiment of the present invention is applied, and FIG. 1B is an elevation view showing a portion of the exterior wall structure. [Diagram 2] 1A is a plan view showing an example of a foundation beam of a building to which an exterior wall structure according to an embodiment of the present invention is applied, and FIG. 1B is an elevation view partially showing the configuration of the base part. [Diagram 3] FIG. 1A is a cross-sectional view showing an example of an exterior wall structure according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line BB in FIG. [Figure 4] FIG. 1A is a cross-sectional view showing an example of a joining style between an exterior wall structure and an inner frame that form an exterior wall structure according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line BB in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, a building and an exterior wall structure according to an embodiment of the present invention will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and may be present in multiple numbers.

[0020] In addition, explanations of configurations and symbols that are duplicated in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting configurations, replacing them with different configurations, or combining one embodiment and various modified examples, within the scope of the purpose of the present disclosure.

[0021] (building) 1(A) and (B) show a building 10 according to an embodiment of the present invention. The building 10 includes a wall-type outer peripheral structure 20 and a steel-framed inner frame 60 that is pin-joined to the outer peripheral structure 20.

[0022] (Outer structure - overview) 1(B) is a structure that forms the outer wall structure of the building 10. The outer periphery structure 20 is a laminated structure formed by alternately arranging two types of layers, that is, a first layer 20A and a second layer 20B, in the vertical direction.

[0023] The first layer 20A is formed using a first exterior wall panel 30 and a sash 32. The first exterior wall panels 30 are exterior wall materials formed using precast concrete, and a plurality of first exterior wall panels 30 are arranged at intervals in the horizontal direction. The sashes 32 are fitted between adjacent first exterior wall panels 30. The sashes 32 form openings between the first exterior wall panels 30.

[0024] The first layers 20A are disposed at intervals in the vertical direction. The second layers 20B are disposed between adjacent first layers 20A.

[0025] The second layer 20B is formed using a second exterior wall panel 42 and a sleeve wall 44. The second exterior wall panel 42 and the sleeve wall 44 are integrally formed using precast concrete to form an exterior wall material (hereinafter, may be referred to as an exterior wall material 40).

[0026] The second exterior wall panel 42 is bridged between adjacent first exterior wall panels 30. Specifically, the left lower end portion of the second exterior wall panel 42 is joined to the right upper end portion of the first exterior wall panel 30. The right lower end portion of the second exterior wall panel 42 is joined to the left upper end portion of another first exterior wall panel 30.

[0027] Similarly, the left upper end of the second exterior wall panel 42 is joined to the right lower end of another first exterior wall panel 30. The right upper end of the second exterior wall panel 42 is joined to the left lower end of another first exterior wall panel 30.

[0028] As shown in FIG. 2(B), a base portion 50 is provided below the outer periphery structure 20 formed by alternately arranging the first layers 20A and the second layers 20B in the vertical direction.

[0029] The base 50 is formed by a column-beam structure having steel columns 52 and beams 54, and concrete 56 covering the column-beam structure.

[0030] The base portion 50 is supported by the seismic isolation device 70. In other words, the outer periphery structure 20 is supported by the seismic isolation device 70 via the base portion 50.

[0031] (inner frame) 1(A), a steel-framed inner frame 60 is arranged inside the exterior wall formed by arranging the outer periphery structural body 20 on all four sides. The inner frame 60 includes, as an example, a square steel pipe or H-shaped steel column 62, an H-shaped steel girder 64 erected between the column 62 and the outer periphery structural body 20, and an H-shaped steel sub-beam 66 erected between the girder 64 and the outer periphery structural body 20.

[0032] (Foundation structure) As shown in Fig. 2(A), the building 10 has a foundation beam 12. The foundation beam 12 is integrally formed across the outer periphery structure 20 and the inner frame 60. The foundation beam 12 is supported by a seismic isolation device 70.

[0033] As shown in Fig. 2(B), the seismic isolation device 70 is provided at a position corresponding to the column 52 of the base 50 in the outer periphery structure 20. The seismic isolation device 70 is also provided at a position corresponding to the column 62 of the inner frame 60 shown in Fig. 1(A). As a result, the outer periphery structure 20 and the inner frame 60 are supported by the seismic isolation device 70, and the building 10 becomes a seismically isolated building.

[0034] (Details of the outer periphery structure) 3(B), the sleeve wall 44 is formed to be thinner than the second exterior wall panel 42. Both the front and back surfaces of the sleeve wall 44 are formed to be chamfered from the front and back surfaces of the second exterior wall panel 42, respectively.

[0035] 3(A), the height of the sleeve wall 44 is lower than the height of the second exterior wall panel 42. As a result, an opening 46 is formed between the sleeve wall 44 and the first exterior wall panel 30. A sash or a louver may be fitted into the opening 46. Also, nothing may be placed in the opening 46.

[0036] As shown in Figure 1 (B), the upper end of the sleeve wall 44 is at the same height as the upper end of the second exterior wall panel 42, but in the present invention, the lower end of the sleeve wall 44 may be at the same height as the lower end of the second exterior wall panel 42.

[0037] As shown in Fig. 3(A), reinforcing bars 80 are arranged in the second exterior wall panel 42 and the sleeve wall 44. Of the reinforcing bars 80, some of the reinforcing bars arranged horizontally are arranged across the second exterior wall panel 42 and the sleeve wall 44. As a result, the second exterior wall panel 42 and the sleeve wall 44 are integrally formed.

[0038] In addition, connecting bars 82 are arranged in the first exterior wall panel 30 and the second exterior wall panel 42. The connecting bars 82 are reinforcing bars that connect the first exterior wall panel 30 and the second exterior wall panel 42 in the up-down direction, and are arranged on both lateral sides of each of the first exterior wall panel 30 and the second exterior wall panel 42.

[0039] A mechanical joint 84 is embedded in the lower ends of the first exterior wall panel 30 and the second exterior wall panel 42.

[0040] The upper end of the connecting bar 82 embedded in the first exterior wall panel 30 protrudes from the upper end of the first exterior wall panel 30 and is inserted into a mechanical joint 84 embedded in the lower end of the second exterior wall panel 42. Meanwhile, the lower end of this connecting bar 82 is inserted into a mechanical joint 84 embedded in the lower end of the first exterior wall panel 30.

[0041] Similarly, the upper end of the connecting bar 82 embedded in the second exterior wall panel 42 protrudes from the upper end of the second exterior wall panel 42 and is inserted into a mechanical joint 84 embedded in the lower end of the first exterior wall panel 30. Meanwhile, the lower end of this connecting bar 82 is inserted into a mechanical joint 84 embedded in the lower end of the second exterior wall panel 42.

[0042] The first exterior wall panel 30 and the second exterior wall panel 42 are structural members arranged in a staggered pattern on the outer periphery of the building 10. On the other hand, the sleeve wall 44 formed integrally with the second exterior wall panel 42 is a non-structural member (miscellaneous wall).

[0043] (Connection structure between the outer structure and the inner frame) As shown in FIG. 4, a main girder 64 (and a minor girder 66, not shown) forming the inner frame 60 is joined to the second exterior wall panel 42 forming the outer periphery structure 20 by a pin.

[0044] Specifically, a steel plate 86 is embedded in the second exterior wall panel 42. The steel plate 86 is embedded so that the in-plane direction is perpendicular to the in-plane direction of the second exterior wall panel 42, and the end portion on the indoor side of the building 10 is disposed so as to protrude from the second exterior wall panel 42.

[0045] A stud bolt S1 is welded to a portion of the steel plate 86 embedded in the second exterior wall panel 42. Meanwhile, a splice plate S2 is bolted to a portion of the steel plate 86 protruding from the second exterior wall panel 42. The splice plate S2 is also bolted to the girder 64. In other words, the portion of the steel plate 86 protruding from the second exterior wall panel 42 and the girder 64 are bolted via the splice plate S2. In this way, the inner frame 60 is pin-connected to the outer periphery structure 20.

[0046] A slab 90 is spanned across the main girder 64 (and the minor girder 66 shown in FIG. 1). The slab 90 is positioned so that its end face faces the inner surfaces of the second exterior wall panel 42 and the sleeve wall 44. As shown by the dashed lines in FIG. 4(A), the slab 90 and the sleeve wall 44 may be positioned with a gap between them, or a protrusion may be provided on the slab 90 so that the slab 90 and the sleeve wall 44 come into contact with each other.

[0047] As shown in Fig. 1(B), the height H1 of the first exterior wall panel and the height H2 of the second exterior wall panel are each lower than the height H3 of one layer of the building 10. The sum of the height H1 of the first exterior wall panel and the height H2 of the second exterior wall panel is equal to the height H3 of one layer of the building 10. The height H3 of one layer of the building 10 is the interval at which the upper and lower slabs 90 are arranged.

[0048] <Action and Effects> In the exterior wall structure according to the embodiment of the present invention, the first exterior wall panels 30 are arranged at intervals in the horizontal direction, as shown in Fig. 1(B). This forms an opening between the first exterior wall panels 30.

[0049] In addition, a second exterior wall panel 42 is joined above and below the first exterior wall panel 30. This allows stress to be transmitted between the first exterior wall panel 30 and the second exterior wall panel 42.

[0050] Furthermore, a sleeve wall 44 is provided between the second exterior wall panels 42. As a result, as shown in Fig. 1(B), by disposing a slab 90 at a height where the sleeve wall 44 is located inside the building 10, it is possible to prevent the end face of the slab 90 from being visible from the outside.

[0051] In the exterior wall structure according to the embodiment of the present invention, as shown in Fig. 3(B), the sleeve wall 44 is formed with a chamfered surface from the second exterior wall panel 42, so that a shaded appearance can be formed. Also, as shown in Fig. 1(B), the sleeve wall 44 is lower in height than the second exterior wall panel 42. Therefore, a gap is formed between the sleeve wall 44 and the first exterior wall panel 30. This gap can be used as an opening, a ventilation hole, or the like.

[0052] In addition, in the exterior wall structure according to the embodiment of the present invention, the height H1 of the first exterior wall panel 30 and the height H2 of the second exterior wall panel 42 are each lower than the height H3 of one layer of the building 10. In other words, one layer of a building cannot be formed by only the first exterior wall panel 30 or only the second exterior wall panel 42.

[0053] For this reason, it is necessary to combine the first exterior wall panel 30 and the second exterior wall panel 42 to form one layer of the building 10. As a result, the second exterior wall panel 42 and the sleeve wall 44 are arranged in each layer of the building 10. Therefore, all of the slabs 90 can be arranged inside the second exterior wall panel 42 and the sleeve wall 44.

[0054] In addition, in the exterior wall structure according to the embodiment of the present invention, the second exterior wall panel 42 is a structural member, and the sleeve wall 44 is a non-structural member. That is, the structural strength of the exterior wall is ensured by the first exterior wall panel 30 and the second exterior wall panel 42. Therefore, the thickness and height of the sleeve wall 44 can be freely set. This allows for greater design freedom compared to a configuration in which the sleeve wall 44 is a structural member.

[0055] In addition, in the exterior wall structure according to the embodiment of the present invention, the outer periphery structure 20 is a wall structure, as shown in Figures 1(A) and (B). In a wall structure, the steel frame and the like are not exposed as the structural frame, so the fireproof coating work for the structure can be reduced. And, in the area surrounded by the outer periphery structure 20, the columns and beams do not protrude indoors or outdoors, so there are few design restrictions. This ensures freedom in terms of appearance.

[0056] In addition, the inner frame 60 of the building 10 is made of steel. This allows the weight of the building 10 to be reduced compared to an inner frame made of reinforced concrete. The inner frame 60 is pin-jointed to the outer periphery structure 20, which prevents bending moment from being applied to the outer periphery structure 20. This allows the weight of the outer periphery structure 20 to be reduced.

[0057] In addition, in the exterior wall structure according to the embodiment of the present invention, the outer peripheral structure 20 is formed of precast members. Therefore, the construction period can be shortened compared to the case where cast-in-place concrete is used.

[0058] 2(A) and (B), in the building 10 according to the embodiment of the present invention, the outer periphery structure 20 and the inner frame 60 are supported by the seismic isolation device 70, so that the external force input to the outer periphery structure 20 can be reduced. This allows the weight of the outer periphery structure 20 to be reduced.

[0059] 4(A) and (B), in the building 10 according to the embodiment of the present invention, a steel plate 86 for pin-joining the inner frame 60 to the outer periphery structure 20 is embedded in the second exterior wall panel 42 of the outer periphery structure 20. For this reason, it is easier to resist the axial force acting on the outer periphery structure 20 from the beams (main beams 64 and minor beams 66) of the inner frame 60 compared to, for example, anchor bolts.

[0060] <Other embodiments> In the above embodiment, the outer peripheral structure 20 and the inner frame 60 are supported by the seismic isolation device 70, but the embodiment of the present invention is not limited to this. For example, both the outer peripheral structure 20 and the inner frame 60 do not have to be supported by the seismic isolation device 70. In other words, the building 10 does not have to be a seismically isolated building.

[0061] In addition, in the above embodiment, the outer peripheral structure 20 is supported by the seismic isolation device 70 via the base 50, but the embodiment of the present invention is not limited to this. For example, such a base 50 does not necessarily have to be provided. Even if the base 50 is not provided, the outer peripheral structure 20 can be supported by the seismic isolation device 70.

[0062] In addition, in the above embodiment, the inner frame 60 is pin-joined to the peripheral structure 20 using the steel plate 86, but the embodiment of the present invention is not limited to this. For example, anchor bolts or the like may be used instead of the steel plate 86. Alternatively, the inner frame 60 may be rigidly or semi-rigidly joined to the peripheral structure 20 instead of being pin-joined.

[0063] In the above embodiment, the inner frame 60 is made of steel, but the embodiment of the present invention is not limited to this. For example, the inner frame 60 may be made of reinforced concrete. Even if the inner frame 60 is made of reinforced concrete, the effect of suppressing the end face of the slab 90 from being visible from the outside can be obtained.

[0064] In the above embodiment, the sleeve wall 44 is formed by chamfering the second exterior wall panel 42 and is formed to have a lower height than the second exterior wall panel 42, but the embodiment of the present invention is not limited to this. For example, at least one of the front and back surfaces of the sleeve wall 44 may be configured to be flush with the second exterior wall panel 42. Furthermore, the sleeve wall 44 may have the same height as the second exterior wall panel 42.

[0065] Even if the sleeve wall 44 is formed in this manner, the effect of preventing the end face of the slab 90 from being visible from the outside can be obtained.

[0066] In addition, in the above embodiment, the height H1 of the first exterior wall panel 30 and the height H2 of the second exterior wall panel 42 are each lower than the height H3 of one layer of the building 10, but the embodiment of the present invention is not limited to this.

[0067] For example, the height H1 of the first exterior wall panel 30 and the height H2 of the second exterior wall panel 42 may be set independently of the height H3 of one layer of the building 10. Also, the height H1 of the first exterior wall panel 30 and the height H2 of the second exterior wall panel 42 may not be a fixed height, but may be different for the first layer 20A and the second layer 20B. Similarly, the height H3 of one layer of the building 10 may also be different for each layer. In this way, the present invention can be embodied in various forms. [Explanation of symbols]

[0068] 20 Peripheral structure 30 First exterior wall panel 42 Second exterior wall panel 44 Sode wall

Claims

1. A plurality of first exterior wall panels arranged at intervals in the horizontal and vertical directions; A plurality of second exterior wall panels are arranged at intervals in the horizontal direction between the first exterior wall panels in the vertical direction and joined to the first exterior wall panels above and below; A sleeve wall provided between the second exterior wall panels adjacent in the horizontal direction and integrally formed with the second exterior wall panels; An exterior wall structure equipped with

2. The sleeve wall is The second exterior wall panel is formed with a chamfered surface and has a height lower than that of the second exterior wall panel. The exterior wall structure according to claim 1 .

3. The height of the first exterior wall panel and the height of the second exterior wall panel are each lower than the height of one floor of a building. The exterior wall structure according to claim 1 or 2.

4. 3. The exterior wall structure according to claim 1, wherein the second exterior wall panel is a structural member and the sleeve wall is a non-structural member, and the second exterior wall panel and the sleeve wall are integrally molded as a precast concrete panel.

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