Outer wall structure

Abstract

To provide an exterior wall structure capable of reducing stress generated in a decorative material even when the decorative material straddles a working joint between adjacent exterior wall panels at a corner of a building. [Solution] The exterior wall structure comprises a first exterior wall panel 1 arranged along one wall surface (for example, surface 203 of column 201) that forms a corner portion 202 of the building skeleton 200, a second exterior wall panel 2 that is arranged along the other wall surface (for example, surface 204 of column 201) that forms the corner portion 202 and abuts against the first exterior wall panel 1 in a state where it is behind the first exterior wall panel 1, and forms an outside corner together with the first exterior wall panel 1, and a decorative material 150 that abuts against the first exterior wall panel 1 and the second exterior wall panel 2 at the outside corner, and is adhered to the first exterior wall panel 1 but not adhered to the second exterior wall panel 2.

Description

[Technical Field]

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

[0002] Conventionally, panels made of concrete-based materials such as autoclaved lightweight concrete (ALC) have been used as exterior wall panels. In the building described in Patent Document 1, a pair of ALC panels adjacent at a corner (protruding corner) are arranged in an L-shape in plan view, with one panel fitting as the winning panel. That is, at the adjacent side edges of the winning and losing panels, the end face of the side edge of the losing panel abuts against the back surface of the side edge of the winning panel. A decorative material that is L-shaped in plan view is attached to the surface of the winning panel along the edge of the adjacent side edge. A separate decorative material is attached to the surface of the losing panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-12408 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the above-mentioned L-shaped decorative material is sized so as not to span the working joint between the winning panel and the losing panel, i.e., between the end face at the side end of the winning panel and the surface of the losing panel. However, when the size of the decorative material needs to be increased due to factors such as the pattern of the decorative material, the L-shaped decorative material may straddle the working joint. Therefore, when the winning panel and the losing panel are joined together and external force is applied, such as during an earthquake, the L-shaped decorative material straddling the working joint may be damaged.

[0005] The present invention has been made in consideration of the above circumstances, and its purpose is to provide an exterior wall structure that can reduce the stress generated in decorative materials and prevent damage to the decorative materials, even when the decorative materials straddle the working joints of adjacent exterior wall panels at the corners of a building. [Means for solving the problem]

[0006] The invention described in claim 1 is, for example, as shown in FIGS. 1 and 2: a first exterior wall panel 1 disposed along one wall surface (for example, a surface 203 of a column 201) that forms a corner portion 202 of a building skeleton 200; a second exterior wall panel 2 that is arranged along the other wall surface (for example, the surface 204 of the pillar 201) that forms the corner portion 202, abuts against the first exterior wall panel 1 in a state where it is behind the first exterior wall panel 1, and forms an external corner together with the first exterior wall panel 1; a decorative material 150 that is applied to the first exterior wall panel 1 and the second exterior wall panel 2 at the protruding corner, and is adhered to the first exterior wall panel 1 but not adhered to the second exterior wall panel 2; The present invention is characterized by the following features.

[0007] According to the invention described in claim 1, the building comprises a first exterior wall panel 1 arranged along one wall surface (for example, surface 203 of column 201) that forms a corner portion 202 of the building skeleton 200, a second exterior wall panel 2 that is arranged along the other wall surface (for example, surface 204 of column 201) that forms the corner portion 202, abutted against the first exterior wall panel 1 in a state where it is behind the first exterior wall panel 1, and forms an exterior corner together with the first exterior wall panel 1, and a decorative material 150 that abuts against the first exterior wall panel 1 and the second exterior wall panel 2 at the exterior corner, is adhered to the first exterior wall panel 1, and is not adhered to the second exterior wall panel 2. Therefore, even if the size of the decorative material 150 is increased due to the design pattern or the like and the decorative material 150 is provided across the working joint between the first exterior wall panel 1 and the second exterior wall panel 2, the decorative material 150 is adhered to the first exterior wall panel 1 and not to the second exterior wall panel 2, so that stress generated in the decorative material 150 when an external force due to an earthquake or the like is applied can be reduced and damage to the decorative material 150 can be reliably prevented.

[0008] The invention described in claim 2 is, for example, as shown in Figs. 1 and 2, in the exterior wall structure described in claim 1, At each side end portion (adjacent side end portions 1a, 2a) where the first exterior wall panel 1 and the second exterior wall panel 2 are adjacent, the side end portion 1a of the first exterior wall panel 1 protrudes from the other wall surface 204 that forms the corner portion 202, An end surface 21a at the side end 2a of the second exterior wall panel 2 is abutted against a back surface 11a at the side end 1a of the protruding first exterior wall panel 1, and the first exterior wall panel 1 and the second exterior wall panel 2 are arranged in an L-shape in a plan view, A decorative material 150 is provided on the surface 13 of the first exterior wall panel 1, the end face 12a at the side end 1a, and the surface 23 of the second exterior wall panel 2, The decorative material 150 is characterized in that it is adhered to the surface 13 of the first exterior wall panel 1 and the end face 12a at the side end 1a, but is not adhered to the surface 23 of the second exterior wall panel 2.

[0009] According to the invention recited in claim 2, at each side end 1a, 2a where the first exterior wall panel 1 and the second exterior wall panel 2 are adjacent, the side end 1a of the first exterior wall panel 1 protrudes from the other wall surface 204 that forms the corner portion 202, and the end face 21a of the side end 2a of the second exterior wall panel 2 abuts against the back surface 11a of the protruding side end 1a of the first exterior wall panel 1, so that the first exterior wall panel 1 and the second exterior wall panel 2 are arranged in an L-shape in plan view. Furthermore, a decorative material 150 is provided on the surface 13 and the end face 12a of the side end 1a of the first exterior wall panel 1 and on the surface 23 of the second exterior wall panel 2. The decorative material 150 is bonded to the surface 13 and the end face 12a of the side end 1a of the first exterior wall panel 1, but is not bonded to the surface 23 of the second exterior wall panel 2. Therefore, even if the size of the decorative material 150 is increased due to the design pattern or the like and the decorative material 150 is provided across the working joint between the first exterior wall panel 1 and the second exterior wall panel 2, the decorative material 150 is adhered to the first exterior wall panel 1 and not to the second exterior wall panel 2, so that stress generated in the decorative material 150 when an external force due to an earthquake or the like is applied can be reduced and damage to the decorative material 150 can be reliably prevented. Furthermore, the decorative material 150 is adhered to the surface 13 and the end face 12a of the side end 1a of the first exterior wall panel 1, but is not adhered to the surface 23 of the second exterior wall panel 2, so that the adhesion points are easy to grasp. Therefore, the decorative material 150 can be installed smoothly.

[0010] The invention described in claim 3 is, for example, as shown in Figs. 1 to 3, in the exterior wall structure described in claim 1 or claim 2, An insulating material T is provided on the surface 23 of the second exterior wall panel 2, The decorative material 150 is provided via the insulating material T.

[0011] According to the invention described in claim 3, an insulating material T is provided on the surface 23 of the second exterior wall panel 2, and a decorative material 150 is provided via the insulating material T, so that the adhesion between the second exterior wall panel 2 and the decorative material 150 can be reliably and easily severed by the insulating material T.

[0012] The invention described in claim 4 is, for example, as shown in Figs. 1 to 3, in the exterior wall structure described in claim 2, The decorative material 150 is a first decorative material 5 provided on the surface 13 of the first exterior wall panel 1; and a second decorative material 6 provided across an end face 12a at the side end 1a of the first exterior wall panel 1 and a surface 23 of the second exterior wall panel 2.

[0013] According to the invention recited in claim 4, the decorative material 150 comprises a first decorative material 5 provided on the surface 13 of the first exterior wall panel 1, and a second decorative material 6 provided across the end face 12a at the side end 1a of the first exterior wall panel 1 and the surface 23 of the second exterior wall panel 2. Therefore, the first decorative material 5 and the second decorative material 6 are easy to manufacture, and also easy to install on the first exterior wall panel 1 and the second exterior wall panel 2.

[0014] The invention described in claim 5 is, for example, as shown in Figs. 2 and 6, in the exterior wall structure described in claim 4, At each side end portion (adjacent side end portions 5a, 6a) where the first decorative material 5 and the second decorative material 6 are adjacent to each other, the side end portion 5a of the first decorative material 5 and the side end portion 6a of the second decorative material 6 each have an inclined surface 51, 61 cut so as to be inclined at approximately 45 degrees in a plan view, The two inclined surfaces 51 and 61 are abutted against each other.

[0015] According to the invention described in claim 5, at each side end 5a, 6a where the first decorative material 5 and the second decorative material 6 are adjacent, the side end 5a of the first decorative material 5 and the side end 6a of the second decorative material 6 each have inclined surfaces 51, 61 cut so as to be inclined at approximately 45 degrees when viewed in a plane, and since the two inclined surfaces 51, 61 are abutted against each other, the design of each side end 5a, 6a of the abutted first decorative material 5 and second decorative material 6 is improved.

[0016] The invention described in claim 6 is, for example, as shown in Figs. 1 to 3, in the exterior wall structure described in claim 2, A back surface 11a of the side end portion 1a of the first exterior wall panel 1 and an end surface 21a of the side end portion 2a of the second exterior wall panel 2 are abutted against each other without being bonded together.

[0017] According to the invention described in claim 6, the back surface 11a at the side end portion 1a of the first exterior wall panel 1 and the end face 21a at the side end portion 2a of the second exterior wall panel 2 are abutted against each other without being bonded together, so that even when an external force such as an earthquake is applied, stress generated in the first exterior wall panel 1 and the second exterior wall panel 2 is reduced.

[0018] The invention described in claim 7 is, for example, as shown in Figs. 1 to 3, in the exterior wall structure described in claim 2, The first exterior wall panel 1 and the second exterior wall panel 2 are characterized in that they are lightweight aerated concrete (ALC) panels.

[0019] According to the invention of claim 7, the first exterior wall panel 1 and the second exterior wall panel 2 are lightweight aerated concrete (ALC) panels, so that an exterior wall structure with excellent fire resistance, heat insulation, and reinforcement can be achieved. In addition, the first exterior wall panel 1 and the second exterior wall panel 2 are lightweight, so construction is easy.

[0020] The invention described in claim 8 is, for example, as shown in Figs. 1 to 3, in the exterior wall structure described in claim 2, The present invention is characterized in that exterior wall panels (for example, a first PALC panel 3 and a second PALC panel 4) having decorative patterns on their surfaces are provided adjacent to a side end 1b of the first exterior wall panel 1 opposite the second exterior wall panel 2 and a side end 2b of the second exterior wall panel 2 opposite the first exterior wall panel 1.

[0021] According to the invention recited in claim 8, exterior wall panels (first PALC panel 3 and second PALC panel 4) having a decorative pattern on their surfaces are provided adjacent to the side end 1b of the first exterior wall panel 1 opposite the second exterior wall panel 2 and the side end 2b of the second exterior wall panel 2 opposite the first exterior wall panel 1. Therefore, by matching the exterior wall panels 3 and 4 having decorative patterns to the patterns of the decorative material 150 provided on the surfaces 13 and 23 of the first exterior wall panel 1 and the second exterior wall panel 2, it is possible to create a unified exterior appearance for the building. [Effects of the Invention]

[0022] According to the present invention, an exterior wall structure can be provided that can reduce the stress generated in the decorative material and prevent damage to the decorative material, even when the decorative material straddles the working joint of adjacent exterior wall panels at the corner of a building. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 2 is a cross-sectional plan view showing the exterior wall structure before the decorative material is attached. [Figure 2] FIG. 10 is a cross-sectional plan view showing the exterior wall structure after the decorative material has been attached. [Figure 3] FIG. 2 is an external perspective view of the exterior wall structure before the decorative material is attached. [Figure 4] 1A is a perspective view of the appearance of a first decorative material, FIG. 1B is a plan view of the first decorative material, and FIG. 1C is a side view of the first decorative material. [Figure 5] FIG. 2 is an external perspective view of a first PALC panel and a first decorative material. [Figure 6] FIG. 2 is a plan view of the first decorative material and the second decorative material. [Figure 7] FIG. 10 is a cross-sectional plan view showing the outer wall structure of Modified Example 1. [Figure 8] FIG. 10 is a cross-sectional plan view showing the outer wall structure of Modified Example 2. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. The drawings are provided for illustrative purposes only, and the scope of the present invention is not limited to the examples in the drawings.

[0025] [Exterior wall structure] Figures 1 and 2 are plan cross-sectional views showing the exterior wall structure, with Figure 1 showing the state before the decorative material is attached and Figure 2 showing the state after the decorative material has been attached. Figure 3 is a perspective view of the exterior wall structure before the decorative material is attached. As shown in Figures 1 and 2, the exterior wall panels 3, 4 are spaced apart from each other but are attached to a building skeleton 200 so as to form an external corner of the building. The exterior wall panels 3, 4 are panel materials made of lightweight aerated concrete. The exterior wall panels 3, 4 may have a decorative pattern on their surfaces. Such exterior wall panels 3, 4 with decorative patterns may be, for example, concrete exterior wall materials in the form of panels made of aerated concrete material such as PALC (Precastable Autoclaved Lightweight Ceramics). Alternatively, they may be ceramic or metal siding materials. A rectangular pillar 201 of the building skeleton 200 is arranged at the inside corner between the exterior wall panels 3 and 4. The pillar 201 closes the gap between the exterior wall panels 3 and 4. The pillar 201 stands upright at the corner of the building skeleton 200. An exterior wall material 10 is arranged along the corner 202 of the pillar 201. In the example shown in FIG. 1 , the pillar 201 is a steel pillar such as a light-gauge steel pillar or a heavy-gauge steel pillar, that is, made of a square steel pipe. However, the pillar 201 may also be designed to be a wooden pillar with a square bar shape. One surface 203 of the two side surfaces that form the corner 202 of the pillar 201, i.e., the corner 202, is perpendicular to the other surface 204.

[0026] The exterior wall material 10 comprises a first exterior wall panel 1 and a second exterior wall panel 2. The first exterior wall panel 1 and the second exterior wall panel 2 may be concrete exterior wall materials such as panels made of lightweight aerated concrete, also known as ALC (Autoclaved Lightweight Aerated Concrete). The first exterior wall panel 1 and the second exterior wall panel 2 are long panels extending in the vertical direction of the building skeleton 200.

[0027] The first exterior wall panel 1 is provided in the shape of a strip. The first exterior wall panel 1 is arranged along one surface 203 that forms a corner portion 202 of the pillar 201. The first exterior wall panel 1 has a front surface 13, a back surface 11a, an end surface 12a, and a second end surface around its periphery. The back surface 11a of the first exterior wall panel 1 faces one surface 203 at the corner portion 202. The front surface 13 of the first exterior wall panel 1 faces away from the back surface 11a. The end surface 12a of the first exterior wall panel 1 is formed between the edge of the front surface 13 and the edge of the back surface 11a. The second end surface of the second exterior wall panel 2 faces away from the end surface 12a.

[0028] The second exterior wall panel 2 is provided in the shape of a strip. The second exterior wall panel 2 is arranged along the other surface 204 that forms the corner portion 202 of the column 201. The second exterior wall panel 2 has a front surface 23, a back surface, an end surface 21a, and a second end surface around its periphery. The back surface of the second exterior wall panel 2 faces the other surface 204 at the corner portion 202. The front surface 23 of the second exterior wall panel 2 faces away from the back surface of the second exterior wall panel 2. The end surface 21a of the second exterior wall panel 2 is formed between the edge of the front surface 23 and the edge of the back surface. The second end surface of the second exterior wall panel 2 faces away from the end surface 21a.

[0029] At each side end (adjacent side end) 1a, 2a where the first exterior wall panel 1 and the second exterior wall panel 2 are adjacent, the adjacent side end 1a of the first exterior wall panel 1 protrudes outward from the other surface 204 that forms the corner portion 202. An end face 21a at the adjacent-side end 2a of the second exterior wall panel 2 abuts against a back face 11a at the adjacent-side end 1a of the first exterior wall panel 1. The back face 11a at the adjacent-side end 1a of the first exterior wall panel 1 abuts against the end face 21a at the adjacent-side end 2a of the second exterior wall panel 2 without being bonded to the end face 21a. In this way, the second exterior wall panel 2 is butted against the first exterior wall panel 1, with the first exterior wall panel 1 in a winning position relative to the second exterior wall panel 2 and the second exterior wall panel 2 in a winning position relative to the exterior wall panel 3. The first exterior wall panel 1 and the second exterior wall panel 2 are arranged in an L-shape in plan view. The combination of the first exterior wall panel 1 and the second exterior wall panel 2 forms an external corner on the outside of the column 201.

[0030] The first exterior wall panel 1 and the second exterior wall panel 2 are fixed to a surface 203 and a surface 204 of the column 201, respectively, via furring strips 205 attached to one surface 203 and the other surface 204 of the column 201, respectively. The first exterior wall panel 1 and the second exterior wall panel 2 can be fixed to the column 201 using, for example, an adhesive, screws, etc.

[0031] On the wall surface of the building skeleton 200, an exterior wall panel 3 with a decorative pattern is attached to a side end 1b of the first exterior wall panel 1 opposite the second exterior wall panel 2. Also, on the wall surface of the building skeleton 200, an exterior wall panel 4 with a decorative pattern is attached to a side end 2b of the second exterior wall panel 2 opposite the first exterior wall panel 1. The thickness M1 of the decorative-patterned exterior wall panels 3, 4 is thicker than the thickness M2 of the first and second exterior wall panels 1, 2. That is, as shown in Fig. 2, the thickness M1 of the decorative-patterned exterior wall panel 3 is preferably approximately equal to the sum of the thickness M2 of the first exterior wall panel 1 and the thickness M3 of the first decorative material 5 provided on the surface of the first exterior wall panel 1. Furthermore, the thickness M1 of the decorative-patterned exterior wall panel 4 is preferably approximately equal to the sum of the thickness M2 of the second exterior wall panel 2 and the thickness M3 of the second decorative material 6 provided on the surface of the second exterior wall panel 2. In the following explanation, we will explain the case where PALC is used as the decorative patterned exterior wall panels 3, 4. The exterior wall panels made of PALC will be referred to as PALC panels hereinafter. The exterior wall panel 3 will be referred to as the first PALC panel 3, and the exterior wall panel 4 will be referred to as the second PALC panel 4.

[0032] A fire-resistant joint material 7 is attached to the gap between adjacent side edges 1b and 3b of the first exterior wall panel 1 and the first PALC panel 3. Similarly, a fire-resistant joint material 7 is attached to the gap between adjacent side edges 2b and 4b of the second exterior wall panel 2 and the second PALC panel 4. The fireproof joint material 7 may be, for example, rock wool.

[0033] A sealant 9 is filled onto the surface of the fireproof joint material 7 via a backup material 8. This allows the sealant 9 to adhere closely to the backup material 8 and the fireproof joint material 7 in the gap. Depending on the width of the gap, either a square or round backup material is used as the backup material 8. The backup material 8 is made of a silicone sponge body, but is not limited to this and may be made of a material such as polyethylene foam. The sealant 9 is a joint filler and is used in combination with the backup material 8. The sealant 9 is typically a urethane-based sealant that has excellent heat resistance, cold resistance, and weather resistance and is suitable for painting, but is not limited to this. For example, a modified silicone rubber-based sealant may also be used as the sealant 9.

[0034] The surfaces of the first PALC panel 3 and the second PALC panel 4 are formed with a tile-like or brick-like pattern, in which protrusions 31, 41 such as tiles or bricks are arranged in a grid pattern.

[0035] A decorative material 150 is provided on the surface 13 and the end face 12a at the side end 1a of the first exterior wall panel 1, and on the surface 23 of the second exterior wall panel 2. The decorative material 150 includes a first decorative material 5 and a second decorative material 6. An adhesive S is applied to the entire surfaces 13, 23 of the first exterior wall panel 1 and the second exterior wall panel 2. A plurality of first decorative materials 5 are attached to the surface 13 of the first exterior wall panel 1 along the up-and-down direction via this adhesive S. An insulating material T is attached to the entire surface 23 of the second exterior wall panel 2. As the insulating material T, it is preferable to use, for example, a commercially available rubber tape such as silicone tape. A plurality of second decorative materials 6 are provided on the end face 12a at the adjacent side end 1a of the first exterior wall panel 1 and on the surface 23 of the second exterior wall panel 2, straddling the end face 12a and the surface 23 along the vertical direction. The second decorative material 6 is attached to the end face 12a at the adjacent side end 1a of the first exterior wall panel 1 via adhesive S, and is attached to the surface 23 of the second exterior wall panel 2 via insulating material T. Therefore, since the insulating material T is interposed between the second exterior wall panel 2 and the second decorative material 6, the second exterior wall panel 2 and the second decorative material 6 are not directly bonded to each other.

[0036] FIG. 4(a) is an external perspective view of the first decorative material, FIG. 4(b) is a plan view of the first decorative material, and FIG. 4(c) is a side view of the first decorative material. The surfaces of the first decorative material 5 and the second decorative material 6 are formed with patterns similar to the patterns formed on the first PALC panel 3 and the second PALC panel 4. Therefore, when the first decorative material 5 and the second decorative material 6 are provided on the first exterior wall panel 1 and the second exterior wall panel 2, the building as a whole can have a unified appearance. FIG. 5 is an external perspective view showing an example of a pattern formed on the first PALC panel 3 and the first decorative material 5. In FIG. 5, a pattern of rectangular protrusions 50 arranged vertically in a front view is formed on the surface of the first decorative material 5. A pattern of rectangular protrusions 31 long in the left-right direction and short rectangular protrusions 32 arranged alternately in the up-down direction in a front view is formed on the surface of the first PALC panel 3. Note that FIGS. 4 and 5 are merely examples, and the present invention is not limited to these patterns and can be modified as appropriate. Also, due to the nature of the drawing, the patterns on the first PALC panel 3 and the second PALC panel 4 have been omitted from FIG. 3.

[0037] FIG. 6 is a plan view of the first decorative material and the second decorative material. The first decorative material 5 and the second decorative material 6 are formed in a substantially parallelogram shape in a plan view. At each side end (adjacent side end) 5a, 6a where the first decorative material 5 and the second decorative material 6 are adjacent, the adjacent side end 5a of the first decorative material 5 and the adjacent side end 6a of the second decorative material 6 each have inclined surfaces 51, 61 cut so as to be inclined at approximately 45 degrees when viewed in a plane. The first decorative material 5 and the second decorative material 6 are fitted together with their inclined surfaces 51, 61 abutting against each other, and are arranged in an L-shape in plan view. The inclined surfaces 51, 61 of the first decorative material 5 and the second decorative material 6 are bonded together with an adhesive S.

[0038] The side end 5b of the first decorative material 5 on the first PALC side has, in a plan view, a vertical surface 52 that is approximately perpendicular to the back surface of the first decorative material 5, and an inclined surface 53 that slopes from the vertical surface 52 toward the front surface. The inclination angle α1 formed by this inclined surface 53 and the surface of the first decorative material 5 is larger than the inclination angle α2 formed by the inclined surface 51 of the side end (adjacent side end) 5a on the second decorative material 6 side and the surface of the first decorative material 5. 2, a corner backing material P is attached to the gap between the vertical surface 52 of the first decorative material 5 and the end face of the adjacent side end 3b of the first PALC panel 3. The corner backing material P forms the bottom of the joint G formed between the first PALC panel 3 and the first decorative material 5.

[0039] Similarly, the side end 6b of the second decorative material 6 on the second PALC panel 4 side has, in a plan view, a vertical surface 62 that is approximately perpendicular to the back surface of the second decorative material 6, and an inclined surface 63 that slopes from the vertical surface 62 toward the front surface. The inclination angle α1 formed by this inclined surface 63 and the surface of the second decorative material 6 is larger than the inclination angle α2 formed by the inclined surface 53 of the side end (adjacent side end) 5b on the first decorative material 5 side and the surface of the second decorative material 6. 2, a corner backing material P is attached to the gap between the vertical surface 62 of the second decorative material 6 and the end face of the adjacent side end 4b of the second PALC panel 4. The corner backing material P forms the bottom of the joint G formed between the second PALC panel 4 and the second decorative material 6.

[0040] [How to install decorative materials] Next, a method for installing the first decorative material 5 and the second decorative material 6 will be described. As shown in FIG. 1 , a first PALC panel 3 and a second PALC panel 4 are attached to the wall surface of a building skeleton 200. Next, a first exterior wall panel 1 and a second exterior wall panel 2 are attached to a column 201 via furring strips 205. A fireproof joint material 7 is fitted into the gap between the first PALC panel 3 and the first exterior wall panel 1. After that, a sealant 9 is filled into the fireproof joint material 7 via a backup material 8, filling the gap between the first PALC panel 3 and the first exterior wall panel 1 and adhering them together. Similarly, the sealant 9 is filled into the gap between the second PALC panel 4 and the second exterior wall panel 2 via the fireproof joint material 7 and the backup material 8.

[0041] After the surface of the sealant 9 has dried, a bond breaker (not shown) is attached to the surface of the sealant 9 to prevent adhesion of a surface preparation material (not shown) to be applied in the next step. Thereafter, a surface preparation material (not shown) is applied to the entire surface 13 of the first exterior wall panel 1, the end face 12a at the adjacent side end 1a of the first exterior wall panel 1, and the entire surface 23 of the second exterior wall panel 2. After applying the base preparation material, the bond breaker is immediately peeled off. After curing overnight, an insulating material T is attached to the surface 23 of the second exterior wall panel 2.

[0042] 2, adhesive S is applied to the entire surface 13 of the first exterior wall panel 1 and the end face 12a of the adjacent side end 1a. Thereafter, a first decorative material 5 is attached to the surface 13 of the first exterior wall panel 1. Next, a second decorative material 6 is provided on the end face 12a of the adjacent-side end 1a of the first exterior wall panel 1 and the surface 23 of the second exterior wall panel 2. At this time, the second decorative material 6 spans the end face 12a of the adjacent-side end 1a of the first exterior wall panel 1 and the surface 23 of the second exterior wall panel 2. However, although adhesive S is applied to the end face 12a of the adjacent-side end 1a of the first exterior wall panel 1, insulating material T is provided on the surface 23 of the second exterior wall panel 2. Therefore, the second decorative material 6 is adhered only to the first exterior wall panel 1, and is separated from the second exterior wall panel 2 by the insulating material T.

[0043] The first decorative material 5 and the second decorative material 6 are attached together using adhesive S that has been sufficiently applied in advance to the inclined surface 51 of the first decorative material 5 and the inclined surface 61 of the second decorative material 6 (see FIG. 6). Any excess adhesive S is wiped off.

[0044] 2, a corner backing material P is fitted onto the surface of the sealant 9 provided in the gap between the first decorative material 5 and the first PALC panel 3 to seal the joint. A corner backing material P is also fitted onto the surface of the sealant 9 provided in the gap between the second decorative material 6 and the second PALC panel 4 to seal the joint. The first decorative material 5 and the second decorative material 6 are installed in this manner.

[0045] According to this embodiment, the following excellent effects are achieved. A first exterior wall panel 1 is arranged along one wall surface 203 that forms a corner portion 202, and a second exterior wall panel 2 is arranged along the other wall surface 204. At each side end portion 1a, 2a where the first exterior wall panel 1 and the second exterior wall panel 2 are adjacent, the side end portion 1a of the first exterior wall panel 1 protrudes from the other wall surface 204 that forms the corner portion 202, and an end face 21a of the side end portion 2a of the second exterior wall panel 2 abuts against a back surface 11a of the protruding side end portion 1a of the first exterior wall panel 1, so that the first exterior wall panel 1 and the second exterior wall panel 2 are arranged in an L-shape in plan view. In addition, a decorative material 150 is provided on the surface 13 and the end face 12a of the side end portion 1a of the first exterior wall panel 1 and on the surface 23 of the second exterior wall panel 2. The decorative material 150 is adhered to the surface 13 and the end face 12a of the side end portion 1a of the first exterior wall panel 1, but is not adhered to the surface 23 of the second exterior wall panel 2. Therefore, even if the size of the decorative material 150 is increased due to the design pattern or the like and the decorative material 150 is provided across the working joint between the first exterior wall panel 1 and the second exterior wall panel 2, the decorative material 150 is adhered to the first exterior wall panel 1 and not to the second exterior wall panel 2, so that stress generated in the decorative material 150 when an external force due to an earthquake or the like is applied can be reduced and damage to the decorative material 150 can be reliably prevented. Furthermore, the decorative material 150 is adhered to the surface 13 and the end face 12a of the side end 1a of the first exterior wall panel 1, but is not adhered to the surface 23 of the second exterior wall panel 2, so that the adhesion points are easy to grasp. Therefore, the decorative material 150 can be installed smoothly.

[0046] An insulating material T is provided on the surface 23 of the second exterior wall panel 2, and a decorative material 150 is provided via the insulating material T, so that the adhesion between the second exterior wall panel 2 and the decorative material 150 can be securely and easily cut off by the insulating material T.

[0047] The decorative material 150 comprises a first decorative material 5 provided on the surface 13 of the first exterior wall panel 1, and a second decorative material 6 provided across the end face 12a at the side end 1a of the first exterior wall panel 1 and the surface 23 of the second exterior wall panel 2. Therefore, the first decorative material 5 and the second decorative material 6 are easy to manufacture, and also easy to install on the first exterior wall panel 1 and the second exterior wall panel 2.

[0048] At each side end 5a, 6a where the first decorative material 5 and the second decorative material 6 are adjacent, the side end 5a of the first decorative material 5 and the side end 6a of the second decorative material 6 each have inclined surfaces 51, 61 cut so as to be inclined at approximately 45 degrees when viewed in a plane, and since the two inclined surfaces 51, 61 are abutted together, the design of each side end 5a, 6a of the abutted first decorative material 5 and second decorative material 6 is improved.

[0049] Since the back surface 11a at the side end 1a of the first exterior wall panel 1 and the end face 21a at the side end 2a of the second exterior wall panel 2 are butted together without being glued together, stress generated in the first exterior wall panel 1 and the second exterior wall panel 2 is reduced even when an external force such as an earthquake is applied.

[0050] Since the first exterior wall panel 1 and the second exterior wall panel 2 are lightweight aerated concrete (ALC) panels, an exterior wall structure with excellent fire resistance, heat insulation, and reinforcement can be achieved. In addition, the first exterior wall panel 1 and the second exterior wall panel 2 are lightweight, making construction easier.

[0051] Exterior wall panels (first PALC panel 3 and second PALC panel 4) having a decorative pattern on their surfaces are provided adjacent to a side end 1b of the first exterior wall panel 1 opposite the second exterior wall panel 2, and adjacent to a side end 2b of the second exterior wall panel 2 opposite the first exterior wall panel 1. Therefore, by matching the first PALC panel 3 and the second PALC panel 4 to the patterns of the decorative material 150 provided on the surfaces 13, 23 of the first exterior wall panel 1 and the second exterior wall panel 2, a unified exterior appearance of the building can be achieved.

[0052] Furthermore, in recent years, there has been a demand for the realization of a carbon-neutral society by promoting carbon neutrality, which means reducing carbon dioxide emissions to virtually zero, and for the achievement of the Sustainable Development Goals (SDGs), and in this context, the construction industry is also making efforts to use wooden buildings, which have low carbon dioxide emissions.By using wood materials, buildings that adopt the above exterior wall structure can contribute to the realization of a carbon-neutral society by promoting carbon neutrality, and to the achievement of the SDGs.

[0053] It should be noted that the embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit of the present invention. Modifications will be described below. The following modifications may be combined as much as possible. In each of the following modifications, elements common to the above-described embodiments will be assigned the same reference numerals, and descriptions thereof will be omitted or simplified.

[0054] [Variation 1] FIG. 7 is a cross-sectional plan view showing the outer wall structure of the first modified example. In the above embodiment, the first exterior wall panel 1 and the second exterior wall panel 2, which are ALC panels, are arranged in an L-shape in plan view along the corner portion 202 of the column 201, and the first PALC panel 3 and the second PALC panel 4 are arranged on the other wall surfaces of the building structure 200, but in this modified example, only ALC panels are used without using the PALC panels 3 and 4. Specifically, a first ALC panel 1A is provided on one wall surface that forms a corner portion of a building skeleton 200. The first ALC panel 1A is long in the left-right direction of the building skeleton 200 and extends to one surface 203 that forms a corner portion 202 of a column 201. In addition, a second ALC panel 2A is provided on the other wall surface that forms the corner portion of the building skeleton 200. The second ALC panel 2A is long in the front-to-rear direction of the building skeleton 200 and extends to the other surface 204 that forms the corner portion 202 of the column 201. The first ALC panel 1A and the second ALC panel 2A are considered to be the winning combination of the first ALC panel 1A.

[0055] The first decorative material 5 described above is arranged on the surface 13A of the first ALC panel 1A. The second decorative material 6 described above is arranged on the end face 12Aa at the adjacent side end 1Aa of the first ALC panel 1A and on the surface 23A of the second ALC panel 2A. The first decorative material 5 and the second decorative material 6 are attached to the first ALC panel 1A and the second ALC panel 2A in the same manner as in the above-described embodiment. That is, an insulating material T is attached to the surface 23A of the second ALC panel 2A, and the insulating material T separates the adhesion between the second decorative material 6 and the second ALC panel 2A.

[0056] Furthermore, multiple decorative materials 300A are arranged on the surface 13A of the first ALC panel 1A in areas where no first decorative material 5 is arranged. Multiple decorative materials 300A are also arranged on the surface 23A of the second ALC panel 2A in areas where no second decorative material 6 is arranged. These decorative materials 300A are attached to the surfaces 13A and 23A of the first ALC panel 1A and the second ALC panel 2A via adhesive S. Furthermore, the decorative material 300A has a pattern on its surface, similar to the first decorative material 5 and the second decorative material 6. Corner backer materials P are fitted into the gaps between adjacent decorative materials 300A. The corner backer materials P form the bottoms of joints G formed between adjacent decorative materials 300A.

[0057] [Variation 2] FIG. 8 is a cross-sectional plan view showing the outer wall structure of the second modification. In the above embodiment, the first decorative material 5 and the second decorative material 6 are fastened together by the inclined surfaces 51, 61, but this is not limited to this. As shown in Figure 8, similar to the first exterior wall panel 1 and the second exterior wall panel 2, the first decorative material 5B may be in a position where it is ahead of the second decorative material 6B and the first decorative material 5B may be abutted against the second decorative material 6B.

[0058] Furthermore, although not shown, the second decorative material may be in a winning position relative to the first decorative material, and the second decorative material may be abutted against the first decorative material. Furthermore, although not shown, the first decorative material 5 and the second decorative material 6 may be integrally formed in advance to form an accessory that is L-shaped in plan view. [Explanation of symbols]

[0059] 1. First exterior wall panel 1a Adjacent side edge (side edge) 1b side end 11a Back side 12a End face 13 Surface 2 Second exterior wall panel 2a Adjacent side edge (side edge) 2b Side edge 21a End face 23 Surface 3. First PALC Panel (exterior wall panel with decorative pattern) 4. Secondary PALC Panel (exterior wall panel with decorative pattern) 5 Daiichi Cosmetic Materials 5a Side edge 51 Slope 6 Secondary decorative material 6a Side edge 61 Slope 150 Cosmetic Materials 200 Building frame 202 Corner section 203 Surface (wall) 204 Surface (wall) T insulation material

Claims

1. a first exterior wall panel disposed along one wall surface forming a corner portion of the building skeleton; a second exterior wall panel that is disposed along the other wall surface that forms the corner portion, abuts against the first exterior wall panel in a state where it is behind the first exterior wall panel, and forms an outside corner together with the first exterior wall panel; a decorative material that is applied to the first exterior wall panel and the second exterior wall panel at the external corner, and is adhered to the first exterior wall panel but not adhered to the second exterior wall panel; Equipped with An exterior wall structure characterized by:

2. At each side end where the first exterior wall panel and the second exterior wall panel are adjacent, the side end of the first exterior wall panel protrudes from the other wall surface that forms the corner portion, The first and second exterior wall panels are arranged in an L-shape in plan view, with an end face at the side end of the second exterior wall panel abutting against a back surface at the side end of the protruding first exterior wall panel, and the decorative material is adhered to a surface of the first exterior wall panel and the end face at the side end, but is not adhered to a surface of the second exterior wall panel. The exterior wall structure according to claim 1 .

3. An insulating material is provided on the surface of the second exterior wall panel, The decorative material is provided via the insulating material.

3. The exterior wall structure according to claim 1 or claim 2.

4. The decorative material is a first decorative material provided on the surface of the first exterior wall panel; a second decorative material provided across the end face at the side end of the first exterior wall panel and the surface of the second exterior wall panel. The exterior wall structure according to claim 2 .

5. At each side end portion where the first decorative material and the second decorative material are adjacent to each other, the side end portion of the first decorative material and the side end portion of the second decorative material each have an inclined surface cut so as to be inclined at approximately 45 degrees in a plan view, The two inclined surfaces are butted against each other. The exterior wall structure according to claim 4 .

6. The back surface of the side end portion of the first exterior wall panel and the end face of the side end portion of the second exterior wall panel are butted against each other without being bonded to each other. The exterior wall structure according to claim 2 .

7. The first exterior wall panel and the second exterior wall panel are lightweight aerated concrete (ALC) panels. The exterior wall structure according to claim 2 .

8. Exterior wall panels having a decorative pattern on a surface are provided adjacent to a side end portion of the first exterior wall panel opposite to the second exterior wall panel and a side end portion of the second exterior wall panel opposite to the first exterior wall panel, respectively. The exterior wall structure according to claim 2 .

Images