Building construction method

Abstract

To provide a construction method for a building, which can reduce the weight of the building as a whole, and which can inexpensively and easily enhance heat insulation and structural strength.SOLUTION: A heat insulating material 13C and 23C are filled in an internal hollow part to manufacture the first and second wall panel 10C and 20C, and the first and second wall panel 10C and 20C of the lower floor are erected. An upper floor panel 70 is placed on the 10C of the first wall panel of the lower floor, and a girth 54 is placed on the 20C of the second wall panel of the lower floor. The first wall panel 30C of the upper story is placed on the side end of the upper story panel 70, and the second wall panel 40C of the upper story is placed on the girth 54. First and second wall panels 30C and 40C of an upper story are arranged in one wall body forming a wall line in a straight line shape in a plan view, and are juxtaposed in a back-to-back state of contacting mutual one side surface materials without mutually separating in the thickness direction of the wall body. The 10C and the 30C of the first wall panel of the upper and lower stories are connected to each other, and the 20C and the 40C of the second wall panel of the upper and lower stories are connected to each other.SELECTED DRAWING: Figure 20

Description

[Technical Field]

[0001] The present invention relates to a building construction method. [Background technology]

[0002] In recent years, the construction of houses and other buildings has become increasingly industrialized. For example, panel construction methods have been adopted in some cases, in which components such as walls, floors, and roofs are prefabricated into panels and then assembled at the construction site to build a house. Such wall panels are made by assembling vertical and horizontal frame members into a square frame, with plywood attached to both sides of the frame. Wall panels have also been disclosed in which a heat insulating material is filled in the space between the frame and the plywood to improve heat insulation (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5393017 Summary of the Invention [Problem to be solved by the invention]

[0004] In buildings using wall panels filled with such insulating material, known methods for further improving the thermal insulation include increasing the thickness of the wall panels, increasing the cross section of the wall panels, and increasing the amount of insulating material filled in, or providing external insulation. However, increasing the thickness of the wall panels poses manufacturing problems, such as the need to install new wall panels of different thicknesses, which increases costs, increases the weight of the building as a whole, and requires the allocation of new production facilities.

[0005] The present invention has been made in consideration of the above circumstances, and its object is to provide a building construction method that can reduce the weight of the entire building and easily strengthen the insulation properties and structural strength at low cost. [Means for solving the problem]

[0006] The invention described in claim 1 is, for example, a construction method for a building 300 as shown in FIGS. 20 and 21, a step of attaching a surface material to one or both sides of a frame formed by assembling vertical and horizontal frame members into a rectangular shape to form a hollow structure, and filling the hollow space with heat insulating material 13C, 23C, 23D, 33C, 43C, 43D to manufacture a first building structural material (first wall panel 10C, 30C) and a second building structural material (second wall panel 20C, 20D, 40C, 40D), which are architectural wood panels; A step of erecting the first building structural member of the lower floor (the first wall panel 10C of the lower floor) and the second building structural member of the lower floor (the second wall panels 20C, 20D of the lower floor); A step of placing an upper floor floor panel 70 on the first building structural member of the lower floor (the first wall panel 10C of the lower floor); A process of placing a girth 54 on the second building structural member of the lower floor (second wall panel 20C, 20D of the lower floor); A step of placing the first building structural material (first wall panel 30C of the upper floor) on the side end of the floor panel 70 of the upper floor; A step of placing the second building structural material (second wall panels 40C, 40D) of the upper floor on the girth 54; a step of arranging the first building structural material of the upper floor (the first wall panel 30C of the upper floor) and the second building structural material of the upper floor (the second wall panels 40C, 40D of the upper floor) within one wall body that forms a wall line in a straight line in a plan view, and arranging them side by side in a back-to-back state with the face panels on one side in contact with each other along the thickness direction of the wall body without being spaced apart from each other; a step of connecting an upper end of the first building structural member of the lower floor (first wall panel 10C of the lower floor) and a lower end of the first building structural member of the upper floor (first wall panel 30C of the upper floor) with connecting bolts 55; and a step of connecting the upper end of the second building structural material of the lower floor (second wall panels 20C, 20D of the lower floor) to the lower end of the second building structural material of the upper floor (second wall panels 40C, 40D of the upper floor) with connecting bolts 55. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a building construction method that can easily and inexpensively strengthen the thermal insulation and structural strength of a building while reducing the weight of the entire building. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic perspective view of a heat insulating structure for a building according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a side cross-sectional view of the thermal insulation structure of the building of FIG. 1. [Figure 3] 1(a) is a front view of the first and second wall panels, FIG. 1(b) is a cross-sectional side view of the first and second wall panels, and FIG. 1(c) is a cross-sectional plan view of the first and second wall panels. [Figure 4] 4 is a modified example of FIG. 3, where (a) is a front view of the first and second wall panels, (b) is a side cross-sectional view of the first and second wall panels, and (c) is a plan cross-sectional view of the first and second wall panels. [Figure 5] FIG. 10 is a schematic perspective view of a heat insulating structure for a building according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a side cross-sectional view of the thermal insulation structure of the building of FIG. 5. [Figure 7] FIG. 10 is a side cross-sectional view of a heat-insulating structure for a building according to a third embodiment of the present invention. [Figure 8] 1 is an explanatory diagram of a location where the thermal insulation structure of a building of the present invention is applied. [Figure 9] 1 is a schematic perspective view showing a construction method for a building to which the thermal insulation structure of the present invention is applied. [Figure 10] 1 is a schematic perspective view showing a construction method for a building to which the thermal insulation structure of the present invention is applied. [Figure 11] 1 is a schematic perspective view showing a construction method for a building to which the thermal insulation structure of the present invention is applied. [Figure 12] 1 is a schematic perspective view showing a construction method for a building to which the thermal insulation structure of the present invention is applied. [Figure 13]FIG. 13 is a schematic perspective view showing a modification shown in FIGS. 9 to 12, illustrating a construction method for a building. [Figure 14] FIG. 13 is a schematic perspective view showing a modification shown in FIGS. 9 to 12, illustrating a construction method for a building. [Figure 15] FIG. 13 is a schematic perspective view showing a modification shown in FIGS. 9 to 12, illustrating a construction method for a building. [Figure 16] FIG. 13 is a schematic perspective view showing a modification shown in FIGS. 9 to 12, illustrating a construction method for a building. [Figure 17] FIG. 13 is a schematic perspective view showing a modification shown in FIGS. 9 to 12, illustrating a construction method for a building. [Figure 18] This is a diagram showing the construction method for a five-story building. [Figure 19] This is a diagram showing the construction method for a five-story building. [Figure 20] 1 is a side cross-sectional view showing a reference example of a heat insulating structure applicable to a building according to the present invention. [Figure 21] 1 is a side cross-sectional view showing a reference example of a heat insulating structure applicable to a building according to the present invention. [Figure 22] FIG. 2 is a cross-sectional plan view of the thermal insulation structure of the building in FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are subject to various limitations that are technically preferable for implementing the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Note that the directions in the following embodiments and illustrated examples are set solely for the convenience of explanation.

[0010] [Building insulation structure] First Embodiment FIG. 1 is a schematic perspective view of a thermal insulation structure for a building according to a first embodiment of the present invention, and FIG. 2 is a side cross-sectional view of the thermal insulation structure for a building. 1 and 2, a building 300 has a first building structural member 10 for the lower floor erected on a foundation 50, and a second building structural member 20 for the lower floor erected outside the first building structural member 10. The first building structural member 10 and the second building structural member 20 are arranged within a wall that forms a straight wall line in a plan view, and are arranged side by side at a distance from each other along the thickness direction of the wall. An insulating layer is formed between the first building structural member 10 and the second building structural member 20 that are arranged side by side at a distance from each other. Furthermore, on the foundation 50, a first building structural member 30 for the upper floor is erected on a first building structural member 10 for the lower floor, and a second building structural member 40 for the upper floor is erected on a second building structural member 20 for the lower floor. These first building structural members 30 and second building structural members 40 are also arranged within a single wall that forms a straight wall line in a plan view, and are arranged side by side at a distance from each other along the thickness direction of the wall. An insulating layer is also formed between the first building structural member 20 and the second building structural member 40.

[0011] The first and second building structural materials 10, 20, 30, 40 may be, for example, architectural wood panels such as pillars used in wooden frame construction, 2x4 panels used in 2x4 construction, or wall panels used in panel construction, and it is preferable to use architectural wood panels, particularly because they are easier to install on site. In the following, a case where the first building structural materials 10, 30 are applied to the first wall panels 10, 30, and the second building structural materials 20, 40 are applied to the second wall panels 20, 40 will be described.

[0012] Figures 3 and 4 are diagrams showing the first and second wall panels, where Figures 3(a) and 4(a) are front views of the first and second wall panels, Figures 3(b) and 4(b) are side cross-sectional views of the first and second wall panels, and Figures 3(c) and 4(c) are plan cross-sectional views of the first and second wall panels. The first and second wall panels 10, 20 of the lower floor are made up of vertical and horizontal frame members assembled into a rectangular shape, with auxiliary beam members assembled vertically and horizontally inside the rectangular frame to form frames 11, 21. Face materials 12, 22 are attached to one or both sides of the frames 11, 21, creating a hollow structure. Furthermore, it is preferable that the hollow interior be filled with heat insulating materials 13, 23. 3 and 4 show the first and second wall panels 10, 20 of the lower floor, but the first and second wall panels 30, 40 of the upper floor have the same configuration. Also, the first and second wall panels 10, 20, 30, 40 shown in FIGS. 1 to 4 have facings 12, 22, 32, 42 attached to both sides. This is the case when a

[0013] Examples of the insulating materials 13, 23 include fiber-based insulating materials 13a, 23a (see FIG. 3) such as glass wool or rock wool, and foamed resin-based insulating materials 13b, 23b (see FIG. 4) such as phenolic foam or polyethylene foam. In particular, fiber-based insulating materials are preferably used for the first wall panel 10 that is placed inside the building 300 where wiring work is required, while foamed resin-based insulating materials are preferably used for the second wall panel 20 that is placed outside the building 300 due to their high insulating performance.

[0014] The foundation 50 is made of reinforced concrete, and anchor bolts 51 (not shown in FIG. 1) are embedded at intervals along the length of the foundation 50. The anchor bolts 51 protrude upward from the upper end surface of the foundation 50. In addition, a ventilation base 52 for taking in outside air under the floor is interposed between the foundation 50 and the first and second wall panels 10, 20 of the lower floor.

[0015] The side end of a floor panel 60 for the lower floor is placed on the ventilation base 52. As with the first and second wall panels 10, 20 described above, the floor panel 60 is formed by assembling vertical and horizontal frame members into a rectangular shape, and auxiliary beam members are assembled vertically and horizontally inside the rectangular frame to form a frame body 61. A face material 62 is attached to one or both sides of this frame body 61, resulting in a hollow structure. Furthermore, it is preferable that the hollow portion is filled with the heat insulating material 63 described above. The floor panel 60 for the lower floor shown in Figures 1 and 2 (and the floor panel 70 for the upper floor, described later) has a face material 62 (72) attached only to the upper surface.

[0016] Furthermore, a half base 53 is placed on the ventilation base 52 on the outside of the side end of the floor panel 60 of the lower floor. Furthermore, a lower connecting member 80 is placed on the ventilation base 52 between the side end of the floor panel 60 of the lower floor and the half base 53.

[0017] The lower connection member 80 has a portal-like shape in side cross section. The lower connection member 80 is composed of a first connection portion 81 located at the lower end of the first wall panel 10 of the lower floor and outside the side end of the floor panel 60 of the lower floor, a second connection portion 82 located at the lower end of the second wall panel 20 of the lower floor and inside the half foundation 53, and a third connection portion 83 which is a plate material connecting the upper ends of the first and second connection portions 81, 82. The first connection portion 81 and the second connection portion 82 are spaced apart along the thickness direction of the wall body, and this space is filled with heat insulating material 84. The first to third connection portions 81 to 83 are elongated plate-like and extend along the foundation 50, and are integrally formed. As such, the lower connecting member 80 is made up of first to third connecting parts 81 to 83 and has a portal shape when viewed from the side, making it lighter and more insulating than, for example, a connecting member that is rectangular when viewed from the side (such as a solid beam).

[0018] Although the lower connecting member 80 is formed by integrally forming the first to third connecting portions 81 to 83 in the shape of a long plate along the foundation 50, it may also be formed by integrally forming the first to third connecting portions in the shape of a short plate rather than by forming them in the shape of a long plate, and multiple such lower connecting members 80 may be scattered along the foundation 50.

[0019] The lower connection member 80 is placed on the ventilation base ring 52, between the side edge of the floor panel 60 of the lower floor and the half base 53. The upper surface of the floor panel 60 of the lower floor, the upper surface of the third connection part 83 of the lower connection member 80, and the upper surface of the half base 53 are all approximately flush with each other. The lower connection member 80 is preferably adhered to the side edge of the floor panel 60 of the lower floor and the half base 53 with an adhesive, and screws may also be used in combination.

[0020] Then, the first wall panel 10 of the lower floor is placed on top of the side end of the lower connecting member 80 and the floor panel 60 using adhesive (screws can also be used; the same applies below), and the second wall panel 20 of the lower floor is placed on top of the lower connecting member 80 and the half base 53 using adhesive. The lower horizontal frames constituting the first and second wall panels 10, 20 of the lower floor are each formed with a through hole (not shown) for inserting an anchor bolt 51 therethrough. Of the anchor bolts 51 embedded in the foundation 50, the upper part of the inner anchor bolt 51 is inserted through the ventilation base ring 52 and further inserted between the lower connection member 80 and the side end face of the floor panel 60, and a tightening nut N is screwed onto the lower end of the first wall panel 10 via a washer (not shown). Similarly, of the anchor bolts 51 embedded in the foundation 50, the upper part of the outer anchor bolt 51 is inserted through the ventilation base ring 52 and further inserted between the lower connection member 80 and the half base 53, and a tightening nut N is screwed onto the lower end of the second wall panel 20 via a washer (not shown). In this way, the first and second wall panels 10, 20 of the lower floor, which are erected spaced apart on the foundation 50, are connected via the lower connecting member 80.

[0021] In addition, it is preferable that an insulating layer is provided between the first wall panel 10 and the second wall panel 20 on the lower floor, and that insulating material 100 (omitted in Figure 1) is provided, as this can further improve the insulation properties. Examples of the insulating material 100 include fiber-based insulating materials such as glass wool and rock wool, and foamed resin-based insulating materials such as phenol foam and polyethylene foam, similar to the insulating materials 13 and 23 filled in the first and second wall panels 10 and 20 described above. By adjusting the distance between the first wall panel 10 and the second wall panel 20 as appropriate, the amount of heat insulating material 100, 200 filled can be easily adjusted.

[0022] Meanwhile, an upper building structural member 70 is placed on top of the first wall panel 10 of the lower floor. Examples of upper building structural materials 70 that can be used include beams used in wooden framework construction, and architectural wood panels such as floor panels and roof panels used in panel construction. The following describes a case where the upper building structural materials 70 are floor panels 70 for the upper floor.

[0023] A girth 54 is placed on the second wall panel 20 of the lower floor. An upper connecting member 90 is placed on the first wall panel 10 and the second wall panel 20 of the lower floor, between the side edge of the floor panel 70 of the upper floor and the girth 54.

[0024] The upper connection member 90 has a portal-like shape in side cross section, similar to the lower connection member 80. The upper connection member 90 is composed of a first connection portion 91 that is located at the upper end of the first wall panel 10 of the lower floor and outside the side end of the floor panel 70 of the upper floor, a second connection portion 92 that is located at the upper end of the second wall panel 20 of the lower floor and inside the girth 54, and a third connection portion 93 that connects the upper ends of the first and second connection portions 91, 29 together. The first to third connection portions 91 to 93 are elongated plate-like portions that extend along the foundation 50, and are integrally formed.

[0025] The upper connecting member 90 may also be formed by integrally forming the first to third short plate-shaped connecting portions 91 to 93, and a plurality of such upper connecting members 90 may be scattered along the foundation 50 (see FIG. 22). This allows the insulating materials 100, 200 to be continuous across the upper and lower floors, further improving insulation.

[0026] The upper connection member 90 is placed on the first and second wall panels 10, 20 of the lower floor, between the side end of the floor panel 70 of the upper floor and the girth 54. The upper surface of the floor panel 70 of the upper floor, the upper surface of the third connection part 93 of the upper connection member 90, and the upper surface of the girth 54 are all approximately flush with each other. The upper connection member 90 is attached to the first wall panel 10 of the lower floor and the second wall panel 20 of the It is preferably glued to the panel 20, the side edges of the upper floor panel 70, and the girth 54.

[0027] Furthermore, the first wall panel 30 of the upper floor (not shown in Figure 1) is placed on top of the upper connecting member 90 and the side end of the floor panel 70 of the upper floor, and the second wall panel 40 of the upper floor (not shown in Figure 1) is placed on top of the upper connecting member 90 and the girth 54. The lower horizontal frames that make up the first and second wall panels 30, 40 on the upper floor each have a through hole (not shown) for inserting a girth bolt 55 (omitted in Figure 1) that connects the wall panels 10, 20 on the lower floor to the wall panels 30, 40 on the upper floor.

[0028] The connecting bolt 55, which is threaded onto the upper end of the first wall panel 10 of the lower floor with a clamping nut N via a washer (not shown), has its upper part inserted between the upper connecting member 90 and the side end face of the floor panel 70 of the upper floor, and a clamping nut N is threaded onto the lower end of the first wall panel 30 of the upper floor with a washer (not shown). Similarly, the girth bolt 55, which is threaded onto the upper end of the second wall panel 40 of the lower floor with a clamping nut N via a washer (not shown), has its upper part inserted between the upper connecting member 90 and the girth 54, and a clamping nut N is threaded onto the lower end of the second wall panel 40 of the upper floor with a washer (not shown). In this way, the first and second wall panels 10, 20 of the lower floor, which are erected at a distance from each other on the foundation 50, and the first and second wall panels 30, 40 of the upper floor, which are erected at a distance from each other on the first and second wall panels 10, 20 of the lower floor, are connected by the lower connecting member 80 and the upper connecting member 90.

[0029] In addition, the upper ends of the wall panels 30, 40 on the upper floor are connected to the first and second wall panels 30, 40 on the upper floor and to upper building structural materials (e.g., floor panels and roof panels on the floor above) placed on the upper ends of the wall panels 30, 40 on the upper floor via upper connecting members (not shown), just like the upper ends of the wall panels 10, 20 on the lower floor. It is also preferable that the space between the first and second wall panels 30, 40 of the upper floor be filled with the insulating material 200. Furthermore, although not shown, the space between the first and second connecting portions 91, 92 of the upper connecting member 90 may also be filled with the insulating material.

[0030] According to the above embodiment, the first wall panels (first wall panel 10 on the lower floor, first wall panel 30 on the upper floor) erected on the foundation 50 and the second wall panels (second wall panel 20 on the lower floor, second wall panel 40 on the upper floor) arranged outside the first wall panels 10, 30 are arranged side by side at a distance from each other along their thickness direction, so that an insulating layer can be formed between the first wall panels 10, 30 and the second wall panels 20, 40, resulting in excellent insulating properties. Therefore, for example, when providing a thermal insulation layer inside one wall panel, it was necessary to increase the thickness of the wall panel in order to increase the thickness of the thermal insulation layer, but with the present invention, the thickness of the thermal insulation layer can be easily changed by using two existing wall panels and appropriately adjusting the spacing between the first and second wall panels 10, 20, 30, 40. This makes it possible to reduce weight at low cost and improve thermal insulation.

[0031] In addition, lower connecting members 80 are provided at the ends of the first wall panel 10 of the lower floor and the second wall panel 20 of the lower floor, and between the first wall panel 10 of the lower floor and the second wall panel 20 of the lower floor, and the first and second wall panels 10, 20 of the lower floor are connected by the lower connecting members 80, so that the first and second wall panels 10, 20 can be firmly erected while being spaced apart, and an insulating layer can be reliably secured. Similarly, in the case of the first wall panel 30 on the upper floor and the second wall panel 40 on the upper floor, the first and second wall panels 30, 40 on the upper floor are connected by the upper connecting member 90, so that the first and second wall panels 30, 40 can be firmly erected while being spaced apart, and an insulating layer can be reliably secured.

[0032] Furthermore, the connecting members (lower connecting member 80, upper connecting member 90) include first connecting portions 81, 91 arranged at the ends of the first wall panels (first wall panel 10 of the lower floor, first wall panel 20 of the upper floor), second connecting portions 82, 92 arranged at the ends of the second wall panels (second wall panel 20 of the lower floor, second wall panel 40 of the upper floor), and third connecting portions 83, 93 connecting the first and second connecting portions 81, 82. Therefore, by manufacturing the connecting members (lower connecting member 80, upper connecting member 90) in advance at a factory or the like, they can be easily installed on site at the ends of the first and second wall panels 10, 20, 30, 40.

[0033] <Second embodiment> FIG. 5 is a schematic perspective view of a thermal insulation structure for a building according to a second embodiment of the present invention, and FIG. 6 is a side cross-sectional view of the thermal insulation structure for a building. In the thermal insulation structure of a building of the second embodiment, the shapes of the lower connecting member 80 and the upper connecting member 90 in the first embodiment are different. The other components, such as the foundation 50, the first and second wall panels 10, 20 of the lower floor, the first and second wall panels 30, 40 of the upper floor, the floor panels 60, 70 of the lower and upper floors, the ventilation base ring 52, the half base 53, and the girth 54, are the same as those in the first embodiment described above, and therefore similar components are designated by the same reference numerals and their description will be omitted.

[0034] As shown in Figures 5 and 6, the side end of the floor panel 60 of the lower floor is placed on the ventilation base 52 on the foundation 50, and a half base 53 is placed on the outside of the side end of the floor panel 60 of the lower floor. In addition, a lower connecting member 80A is placed on the ventilation base 52 between the side end of the floor panel 60 of the lower floor and the half base 53.

[0035] The lower connecting member 80A includes a fourth connecting portion 81A that is positioned at the lower end of the first wall panel 10 of the lower floor and outside the side end of the floor panel 60, a fifth connecting portion 82A that is positioned at the lower end of the second wall panel 20 of the lower floor and inside the half foundation 53, and a driving member 83A that is driven from the fifth connecting portion 82A toward the fourth connecting portion 81A. Specifically, the fourth and fifth connecting portions 81A, 82A are formed in the shape of long plates that extend along the foundation 50. The driving member 83A is preferably cylindrical or columnar, and has a length that penetrates from the half base 53 to the fifth connecting portion 82A, the fourth connecting portion 81A, and the side end portion of the floor panel 60. Furthermore, the driving member 83A is preferably made of, for example, metal or wood, and specifically is preferably a dowel or the like. Such lower connection member 80A is preferably adhered to the side edge of the floor panel 60 of the lower floor and to the half base 53 with an adhesive.

[0036] Then, the first wall panel 10 of the lower floor is placed on top of the fourth connection portion 81A and the side end of the floor panel 60 of the lower floor using adhesive, and the second wall panel 20 of the lower floor is placed on top of the fifth connection portion 82A and the half base 53 using adhesive.

[0037] Of the anchor bolts 51 (omitted from FIG. 5) embedded in the foundation 50, the upper part of the inner anchor bolt 51 is inserted through the ventilation base ring 52 and further inserted between the fourth connection part 81A and the side end face of the floor panel 60 of the lower floor, and a tightening nut N is screwed onto the lower end part of the first wall panel 10 of the lower floor via a washer (not shown).Similarly, of the anchor bolts 51 embedded in the foundation 50, the upper part of the outer anchor bolt 51 is inserted through the ventilation base ring 52 and further inserted between the fifth connection part 82A and the half base 53, and a tightening nut N is screwed onto the lower end part of the second wall panel 20 of the lower floor via a washer (not shown). In addition, a plurality of driving members 83A are provided at intervals from the outer surface of the half base 53 toward the floor panel 60 of the lower floor so as to penetrate from the fifth connecting portion 82A to the fourth connecting portion 81A in a substantially horizontal direction. The half base 53, the fourth and fifth connection portions 81A, 82A and the floor panel 60 of the lower floor are connected by being driven in at intervals (for example, at equal intervals). In this way, the first and second wall panels 10, 20 erected apart from each other on the foundation 50 are connected via the lower connecting member 80.

[0038] Furthermore, it is preferable that the space between the first wall panel 10 and the second wall panel 20 of the lower floor be filled with the above-mentioned heat insulating material 100 (omitted in FIG. 5). The amount of heat insulating material 100 filled can be easily adjusted by appropriately adjusting the distance between the first wall panel 10 on the lower floor and the second wall panel 20 on the lower floor.

[0039] Meanwhile, the upper floor floor panel 70 is placed on the first wall panel 10 of the lower floor, and the girth 54 is placed on the second wall panel 20 of the lower floor. In addition, an upper connecting member 90A is placed on the first and second wall panels 10, 20 of the lower floor between the side end of the upper floor floor panel 70 and the girth 54. The upper connection member 90A has the same shape as the lower connection member 80A described above, and is composed of a fourth connection portion 91A, a fifth connection portion 92A, and a driving member 93A. Such upper connecting member 90A is preferably adhered to the first wall panel 10, the second wall panel 20 of the lower floor, the side edges of the floor panel 70 of the upper floor, and the girth 54 with an adhesive.

[0040] In addition, the first wall panel 30 of the upper floor (omitted in Figure 5) is placed on top of the fourth connection portion 91A and the side end of the floor panel 70 of the upper floor, and the second wall panel 40 of the upper floor (omitted in Figure 5) is placed on top of the fifth connection portion 92A and the girth 54.

[0041] The upper part of the girth bolt 55 (omitted from FIG. 5) that is threaded with a clamping nut N via a washer (not shown) to the upper end of the first wall panel 10 of the lower floor is inserted between the fourth connection part 91A and the side end face of the floor panel 70 of the upper floor, and the clamping nut N is threaded with a washer (not shown) to the lower end of the first wall panel 30 of the upper floor. Similarly, the upper part of the girth bolt 55 that is threaded with a clamping nut N via a washer (not shown) to the upper end of the second wall panel 20 of the lower floor is inserted between the fifth connection part 92A and the girth 54, and the clamping nut N is threaded with a washer (not shown) to the lower end of the second wall panel 40 of the upper floor. In addition, multiple driving members 93A are driven at predetermined intervals from the outer surface of the girth 54 in an approximately horizontal direction toward the floor panel 70 of the upper floor, penetrating from the fifth connection portion 92A to the fourth connection portion 91A, thereby connecting the girth 54, the fourth and fifth connection portions 91A, 92A and the floor panel 70 of the upper floor. In this way, the first and second wall panels 10, 20 of the lower floor, which are erected at a distance from each other on the foundation 50, and the first and second wall panels 30, 40 of the upper floor, which are erected at a distance from each other on the first and second wall panels 10, 20 of the lower floor, are connected by the lower connecting member 80A and the upper connecting member 90A.

[0042] According to the above embodiment, as in the first embodiment, the spaces between the first wall panels 10, 30 and the second wall panels 20, 40 can be made into insulating layers, respectively, resulting in excellent thermal insulation. Therefore, by using two existing wall panels and appropriately adjusting the spacing between the first and second wall panels 10, 20, 30, 40, the thickness of the insulating layer can be easily changed. This allows for weight reduction at low cost and improved thermal insulation.

[0043] Furthermore, since the first and second wall panels 10, 20, 30, 40 are connected by the lower connecting member 80A and the upper connecting member 90A, the first and second wall panels 10, 20, 30, 40 can be firmly erected while being spaced apart, thereby reliably securing an insulating layer.

[0044] Furthermore, the connecting members (lower connecting member 80A, upper connecting member 90A) are provided with fourth connecting portions 81A, 91A arranged at the ends of the first wall panels 10, 30, fifth connecting portions 82A, 92A arranged at the ends of the second wall panels 20, 40, and driving members 83A, 93A that are driven from the fifth connecting portions 82A, 92A toward the fourth connecting portions 81A, 91A, so that they can be easily installed on site according to the spacing between the first and second wall panels 10, 20, 30, 40.

[0045] It should be noted that the lower connecting member 80A and the upper connecting member 90A are comprised of the fourth and fifth connecting portions 81A, 82A, 91A, 92A which are elongated plates extending along the foundation 50, and a plurality of driving-in members 83A, 93A. However, the fourth and fifth connecting portions 81A, 82A, 91A, 92A are not limited to being elongated plates, and may be short plates, and a plurality of such lower connecting members 80A and upper connecting members 90A may each be arranged so as to be scattered along the foundation 50.

[0046] <Third embodiment> FIG. 7 is a side cross-sectional view of a heat insulating structure for a building according to a third embodiment of the present invention. The thermal insulation structure of a building of the third embodiment uses lower connection members 80B and upper connection members 90B that have shapes different from the lower connection members 80 and upper connection members 90 used in the first embodiment. The other components, such as the foundation 50, the first and second wall panels 10, 20 of the lower floor, the first and second wall panels 30, 40 of the upper floor, the floor panels 60, 70 of the lower and upper floors, the ventilation base ring 52, the half base 53, and the girth 54, are the same as those in the first embodiment described above, and therefore similar components are designated by the same reference numerals and their description will be omitted.

[0047] Specifically, the lower connecting member 80 in the first embodiment had a portal-like shape in side cross section, with the upper ends of the first connecting portion 81 and the second connecting portion 82 connected to each other by the third connecting portion 83, but the connecting member 80B in the third embodiment, as shown in Fig. 7, has a size and shape such that the third connecting portion 83B can fit between the first and second connecting portions 81B, 82B (i.e., between the first and second wall panels 10, 20) like a solid beam, and these first to third connecting portions 81B to 83B are bonded together. Note that the upper connecting member 90B is also formed by bonding first to third connecting portions 91B to 93B together, similar to the lower connecting member 80B.

[0048] Therefore, for example, at a construction site, the first to third connection portions 81B to 83B, 91B to 93B of the lower connection member 80B and the upper connection member 90B can be placed and adhered together to easily connect the first and second wall panels 10, 20, 30, 40 that are erected at a distance from each other.

[0049] It should be noted that the lower connecting member 80B and the upper connecting member 90B are described as consisting of the first to third connecting portions 81B to 83B, 91B to 93B which are elongated plates extending along the foundation 50, but the first to third connecting portions 81B to 83B, 91B to 93B are not limited to being elongated plates and may also be short plates, and multiple such lower connecting members 80B and upper connecting members 90B may each be arranged scattered along the foundation 50.

[0050] Furthermore, in the above first to third embodiments, the lower connecting members 80, 80A, 80B are provided at the lower ends of the first and second wall panels 10, 20 of the lower floor, and the upper connecting members 90, 90A, 90B are provided at the upper ends of the first and second wall panels 10, 20 of the lower floor and at the lower ends of the first and second wall panels 30, 40 of the upper floor. However, this is not limited to this, and the upper connecting members 90, 90A, 90B may be provided at the side ends of the first and second wall panels 10, 20, 30, 40, for example, to connect the side ends of the first and second wall panels 10, 20, 30, 40 to each other.

[0051] <Example> Next, we will explain the locations where the insulating structure of the present invention, which is a structure in which first and second building structural materials are arranged side by side at a distance from each other (hereinafter also referred to as a "double structure"), as described in the first to third embodiments, is applied. Of the multiple walls that make up a building, the wall to which the double structure is applied is determined by whether the area on either side of the target wall is an outdoor area with outdoor air attributes or an indoor area with indoor air attributes.

[0052] Examples of the areas with outdoor air attributes include a front porch, a garage, a balcony, an external storage area, an external warehouse, and the like. The areas with the shy attribute include an entrance hall, a corridor, a living room, a kitchen, a storage room, a private room, a stairwell, a utility room, a bedroom, a toilet, a dressing room, and a bathroom.

[0053] 12, for example, when one area of ​​a predetermined wall P1 among the multiple walls P that make up the building 300 is an area with outdoor air attributes (outdoor air area Ra) and the other area is an area with indoor air attributes (indoor air area Rb), the predetermined wall P1 is composed of first and second building structural materials (first and second wall panels 10, 20, 30, 40) that are arranged side by side and spaced apart from each other. In other words, the double structure described above is applied.

[0054] Furthermore, when a specific wall P1 among the multiple wall bodies P that make up the building 300 is made up of first and second building structural materials (first and second wall panels 30, 40) arranged side by side and spaced apart from each other (the double structure), the wall P2 on the lower floor located below the specific wall P1 is also made up of first and second building structural materials (first and second wall panels 10, 20) arranged side by side and spaced apart from each other (the double structure).

[0055] Specifically, when the one area is the balcony 305 and the other area is the bedroom 306, the wall P1 erected between these areas is of a double structure. Furthermore, the wall P2 on the first floor located below the wall P1 on the second floor to which the double structure is applied is also of a double structure.

[0056] Other patterns are as shown in FIG. In Figure 8, the notation "outside air + NON" means the area outside the building that is adjacent to the area with the outside air attribute, the notation "outside air + outside air" means the wall between the area with the outside air attribute and the area with the outside air attribute, the notation "outside air + inside air" means the wall between the area with the outside air attribute and the area with the inside air attribute, and the notation "inside air + inside air" means the wall between the area with the inside air attribute and the area with the inside air attribute. In addition, in Figure 8, "W" represents a double structure, and "S" represents a single structure, which is a conventional structure with one wall panel.

[0057] As shown in Figure 8, in the case of "outside air + NON", if the upper floor is a double structure, the double structure will be used with no insulation between the first and second wall panels, and if the upper floor is a single structure, the single structure will be used with no insulation. In the case of "outside air + outside air," if the upper floor is a double structure, it is considered to be a double structure with no insulation, and if the upper floor is a single structure, it is considered to be a single structure with no insulation. In the case of "outside air + inside air," as mentioned above, the structure is double and has insulation. In the case of "inner air" + "inner air", it is a normal inner wall, and if the upper floor is a double structure, it is a double structure inner wall, and if the upper floor is a single structure, it is a single structure inner wall.

[0058] [Building construction method] 9 to 12 are schematic perspective views showing a construction method for a building to which the heat insulating structure of the present invention is applied. do. In building 300 shown in Figures 9 to 12, living room 302 is located to the right of entrance 301, and garage 303 is located to the left of entrance 301. Furthermore, storage space 304 is located at the back of garage 303. There is also an open atrium above garage 303, and balcony 305 is located above entrance 301, and bedroom 306 and balcony 305 on the upper floor are located above living room 302 on the lower floor.

[0059] To construct such a building 300, first, as shown in Figure 9, the lower connection member 80 and the half base 53 are placed on the foundation 50 on which the wall P constituting the living room 302 to which the double structure is to be applied is to be installed. Also, only the half base 53 is placed on the foundation 50 on which the wall P constituting the living room 302 to which the single structure is to be applied is to be installed. Furthermore, the lower connection member 80 and the half base 53 are placed on the foundation 50 on which the wall body P constituting the entrance 301 to which the double structure is to be applied is to be provided. Furthermore, only the half base 53 is placed on the foundation 50 on which the wall body P constituting the entrance 301 to which the single structure is to be applied is to be provided. Furthermore, the lower connection member 80 and the half base 53 are placed on the foundation 50 on which the wall body P constituting the garage 303 to which the double structure is to be applied is to be installed. Also, only the half base 53 is placed on the foundation 50 on which the wall body P constituting the garage 303 to which the single structure is to be applied is to be installed. Then, floor panels 60 and the like for the lower floor are placed at predetermined locations on the foundation 50.

[0060] Next, as shown in Figure 10, where a double structure is to be applied, the first wall panel 10 of the lower floor is placed on top of the lower connecting member 80 and the side end of the floor panel 60, and the second wall panel 20 of the lower floor is placed on top of the lower connecting member 80 and the half base 53. At this time, the first and second wall panels 10, 20 are placed apart from each other and then fastened together with anchor bolts. In addition, in areas where a shingle structure is applied, the wall panel S is placed on the half base 53 and fastened with anchor bolts. Furthermore, the wall panel S is installed on the floor panel 60 that will become the interior wall of the room.

[0061] Next, as shown in Figure 11, floor panels 70 and girths 54 for the upper floor are placed on the wall bodies P that make up the entrance 301 and living room 302. At this time, upper connecting members 90 are placed on the upper floors as well, where walls to which a double structure will be applied will be installed. Furthermore, girths (not shown) are placed on the wall bodies P that make up the garage 303, and upper connecting members (not shown) are placed on the parts to which a double structure will be applied.

[0062] Next, as shown in Figure 12, where a double structure is to be applied, the first wall panel 30 of the upper floor is placed on top of the upper connecting member 90 (see Figure 11) and the side end of the floor panel 70 of the upper floor, and the second wall panel 40 of the upper floor is placed on top of the upper connecting member 90 and girth 54 (see Figure 11). At this time, the first and second wall panels 30, 40 are placed apart and then fastened together with girth bolts. In addition, in areas where a single structure is applied, the wall panel S is placed on the girth and fastened with girth bolts. Furthermore, the wall panel S is installed on the floor panel 70 that will become the interior wall of the living room. In addition, roof panels Y, etc. are installed at designated locations on the wall panels 30, 40, and S on the upper floors.

[0063] As described above, the specified wall P1 sandwiched between the outdoor air area Ra and the indoor air area Rb is composed of the first and second wall panels 10, 20, 30, 40 arranged side by side at a distance from each other, and a double structure is applied, so the building 300 can have excellent insulation properties. In addition, when a predetermined wall body P1 on an upper floor is composed of first and second wall panels 30, 40 arranged side by side at a distance from each other, the wall of the lower floor located below the predetermined wall body P1 The body P2 is also made up of the first and second wall panels 10, 20 arranged side by side and spaced apart from each other, so that the strength of the building 300 can be sufficiently ensured.

[0064] 13 to 17 show a construction method for the building shown in FIGS. 9 to 12, in which a heat insulating material is provided between the first and second wall panels. 13 to 17, unlike the building 300 shown in Figures 9 to 12, a bedroom 407 is located above a garage 403. Note that reference numeral 401 denotes an entrance, reference numeral 402 denotes a living room, reference numerals 404 and 406 denote bedrooms, and reference numeral 405 denotes a balcony.

[0065] To construct such a building 400, first, as shown in Fig. 13, the lower connection member 80 and the half base 53 are placed on the foundation 50 on which the wall body to which the double structure is applied will be installed. Also, only the half base 53 is placed on the foundation 50 on which the wall body to which the single structure is applied will be installed. Then, floor panels 60 and the like for the lower floor are placed at predetermined locations on the foundation 50.

[0066] Next, as shown in Figure 14, where a double structure is used, the first wall panel 10 of the lower floor is placed on top of the lower connecting member 80 and the side end of the floor panel 60. Where a single structure is used, the wall panel S is placed on top of the half base 53 and fastened with anchor bolts. Furthermore, a wall panel S is also installed on top of the floor panel 60, which will become the interior wall of the room.

[0067] Next, as shown in Fig. 15, among the walls employing the double structure, a heat insulating material 100 is attached to the first wall panel 10 of the wall facing an area with an inside air attribute (for example, the living room 402, etc.). Note that among the walls employing the double structure, no heat insulating material is attached to the first wall panel 10 of the wall facing an area with an outside air attribute (for example, the garage 403, etc.).

[0068] Next, as shown in Figure 16, the second wall panel 20 is placed on the portion of the first wall panel 10 where the insulation material 100 is attached, and fastened with anchor bolts. Also, the second wall panel 20 is placed on the first wall panel 10 that does not have the insulation material 100 on the wall facing the garage 403 or the like, and fastened with anchor bolts.

[0069] Next, as shown in Figure 17, where a double structure is used, the first wall panel 30 of the upper floor is placed on the upper connecting member (not shown) and the side edge of the floor panel 70 of the upper floor, and the second wall panel 40 of the upper floor is placed on the upper connecting member (not shown) and girth (not shown). At this time, insulation may be provided between the first and second wall panels 30, 40 of the upper floor as needed, and then they are fastened together with girth bolts. In addition, in areas where a single structure is used, the wall panel S is placed on a girth (not shown) and fastened with a girth bolt. Furthermore, the wall panel S is also installed on the floor panel 70 that will become the interior wall of the living room. In addition, roof panels Y, etc. are installed at designated locations on the wall panels 30, 40, and S on the upper floors.

[0070] The lower connecting members 80 and upper connecting members 90 used in the buildings 300, 400 described in Figures 9 to 17 are the side cross-sectional gate-shaped members described in the first embodiment, but are not limited to this and the lower connecting members 80A, 80B and upper connecting members 90A, 90B described in the second and third embodiments may also be used.

[0071] Although the buildings 300 and 400 described above were two stories high, the same construction method can be used for buildings with three or more stories. 18 and 19 are diagrams showing the construction method for a five-story building. As shown in FIGS. 18 and 19, for a predetermined wall P1 among a plurality of walls P constituting the building 500, one region sandwiching the predetermined wall P1 is an outside air region Ra, and the other region is an inside air region. In the air region Rb, the predetermined wall body P1 has the double structure constituted by first and second building structural materials (for example, first and second wall panels 10, 20, 30, 40) arranged side by side and spaced apart from each other.

[0072] <Reference example> Next, a reference example of a heat insulating structure for a building will be described with reference to FIGS. 20 and 21. FIG. FIG. 20 is a diagram showing a heat insulating structure of a building in which first and second wall panels are erected back to back without any space between them. That is, the thermal insulation structure of the building 300 shown in Figure 20 has a first building structural material (e.g., a first wall panel 10) and a second building structural material (e.g., a second wall panel 20) erected on the structural body of the building 300, and the first building structural material (first wall panel 10) and the second building structural material (first wall panel 20) are arranged within a wall that forms a wall line in a straight line when viewed in plan, and are arranged side by side back to back along the thickness direction of the wall without any space between them. Specifically, the first and second wall panels 10C, 20C, 30C, 40C have facings 12C, 22C, 32C, 42C attached to only one side of the frame body 11C, 21C, 31C, 41C, and the hollow interior portion is filled with insulating material 13C, 23C, 33C, 43C. The wall panels 10C, 20C, 30C, and 40C are erected so that the face materials 12C, 22C, 32C, and 42C are back-to-back with each other. Because the first and second wall panels 10C, 20C, 30C, and 40C are back-to-back, the overall wall thickness of the first and second wall panels is thick, resulting in excellent thermal insulation. For example, when providing a thermal insulation layer inside a single building structural member (wall panel), the thickness of the building structural member (wall panel) had to be increased to increase the thickness of the thermal insulation layer. However, with the thermal insulation structure of the building shown in Figure 20, multiple existing building structural members (wall panels) are used, and the first wall panel 10C and the second wall panel 20C are installed back-to-back, allowing for easy wall thickness increase. This allows for cost-effective weight reduction and enhanced thermal insulation and structural strength. Such a back-to-back structure may be applied to a part of the building according to the present invention.

[0073] Figure 21 shows an example in which the types of insulating material filled in the first wall panels 10C, 30C and the second wall panels 20D, 40D are different, and such a back-to-back structure may also be applied to part of the building according to the present invention. Specifically, as mentioned above, the insulation materials 23D, 43D filled in the second wall panels 20D, 40D placed on the outside of the building are preferably foamed resin insulation materials with high insulation performance, and the insulation materials 13C, 33C filled in the third wall panels 10C, 30C placed on the inside of the building are preferably fiber insulation materials that allow for easy wiring work. 20 and 21, the same components as those in FIG. 2 are denoted by the same reference numerals. [Explanation of symbols]

[0074] 10 First wall panel (first building structural material) 20 Second wall panel (second building structural material) 50 Basics 80, 80A Connection member (lower connection member) 81 First connection 82 Second connection 83 Third Connection 81A 4th connection 82A 5th connection 83A Drive-in material 100 Insulation 300 buildings P,P1,P2 wall Ra Outside air area Rb Inner air area

Claims

[Claim 1] A building construction method comprising: a step of attaching a surface material to one or both sides of a frame formed by assembling vertical and horizontal frame members into a rectangular shape to form a hollow structure, and filling the hollow space with a heat insulating material to manufacture a first building structural material and a second building structural material, which are wooden panels for construction; erecting the first building structural material of the lower floor and the second building structural material of the lower floor; placing a floor panel of an upper floor on the first building structural member of the lower floor; placing a girth on the second building structural member of the lower floor; placing the first building structural member of the upper floor on the side edge of the floor panel of the upper floor; A step of placing the second building structural material of the upper floor on the girth; a step of arranging the first building structural material of the upper floor and the second building structural material of the upper floor within one wall body that forms a wall line in a straight line in a plan view, and arranging them side by side in a back-to-back state with the face materials on one side in contact with each other along the thickness direction of the wall body without being spaced apart from each other; a step of connecting an upper end portion of the first building structural member of the lower floor and a lower end portion of the first building structural member of the upper floor with connecting bolts; A building construction method characterized by comprising a step of connecting the upper end of the second building structural member of the lower floor to the lower end of the second building structural member of the upper floor with a connecting bolt.

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