JP3619211B2 - Exterior wall structure of extension and renovation building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outer wall structure of an extension / reconstruction building that has excellent appearance and can prevent breakage in the event of a disaster such as an earthquake or can reduce the degree of breakage.
[0002]
[Prior art]
2. Description of the Related Art In recent years, when a resident's lifestyle changes in a house, refurbishment in a store, etc., the number of existing buildings has been increased, and some of the existing buildings have been demolished.
[0003]
In such a building, in order to improve the efficiency of construction and the finished appearance, the outer wall structure to be expanded and reconstructed is continuously formed integrally with the existing outer wall structure, and the outdoor side and the indoor side are also formed. In general, the surface finish is continuously formed integrally.
[0004]
By the way, in these increased buildings, the type of structure itself is often different, such as adding a wooden structure to an existing building with a steel structure, or even if the type of structure is the same, in most cases its rigidity The structural characteristics such as natural frequency are different. For this reason, the behavior differs between the existing building and the extension / reconstruction building under earthquake and traffic vibrations. As a result, the outer wall structure formed in the continuous unit is deformed at the boundary part, and the outdoor side formed in the continuous unit is further formed. , And the surface finish on the indoor side will crack and cause peeling.
[0005]
[Problems to be solved by the invention]
In order to solve such a problem, it is considered to construct an extension / reconstruction building that is separated and independent from an existing building, and adopt a structure that provides a gap between the two parts to absorb the difference in behavior. . However, in such an extended and reconstructed building structure, there is a problem that air, sound, and rainwater are likely to enter between the existing building and the extended and reconstructed building, thereby impairing the indoor environment.
[0006]
In addition, a bellows-like connecting material that can be stretched or a covering material is attached to cover the gap between the existing building and the extension / reconstruction building. There is a problem that damages.
[0007]
The present invention was devised in view of the above problems, and even if the behavior differs between an existing building and an extension / reconstruction building at the time of occurrence of traffic vibration, the structure of the existing building and the extension / reconstruction building such as an outer wall plate, etc. It is an object of the present invention to provide an outer wall structure of an extension / reconstruction building that does not cause stress on the body and prevents deformation in an existing building or extension / reconstruction building, or breakage of the outer wall plate such as a crack.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, the boundary between the outer wall of the existing building and the outer wall of the extension building is parallel to the surface direction of the outer wall of the extension building at the extension building side of the outer wall of the existing building. in and Ri Wataru across the upper and lower boundary of the outer wall, the substrate and the exterior plate of the existing housing buildings the substrate a cover plate and a main plate to extend in parallel to the substrate via a stepped portion bent the side edges increasing the with Keru mounted in sandwiched between the base sheet and extending the outer casing of the renovation building at regular intervals on the outer side of the main plate of the cover plate, the cover plate and the renovation building perimeter walls plate It is an outer wall structure of an extended and reconstructed building that can slide in the surface direction of the outer wall of the renovated building.
[0009]
Because of this structure, the cover plate on the outer wall of the existing building and the exterior plate of the additional building are expanded and remodeled even if the behavior differs between the existing building and the expanded building when an earthquake or traffic vibration occurs. Because it is slidable in the surface direction of the outer wall of the building, there is no stress on the structure of the existing building and extension building such as exterior panels, and the existing building and extension building are deformed and cracked in the exterior plate. It can prevent damage.
[0010]
Further, as in the invention described in claim 2, by forming the cover plate with an elastic plate, between the existing building and the extension building at the time of the occurrence of an earthquake or traffic vibration, the cover plate is perpendicular to the outer wall surface of the extension building. Even for the difference in behavior that occurs, the deformation of the cover plate absorbs this and can prevent the deformation in the existing building and the extension / reconstruction building and the breakage of the exterior plate such as cracks.
[0011]
Furthermore, as in the invention of claim 3, a receiving plate is attached to the back side of the exterior plate of the extension and renovation building, and the tip of the watertight piece provided at the tip of the receiving plate toward the cover plate comes into contact with the surface of the cover plate. By interposing a water-tight material between the cover plate and the backing plate, there is no gap between the outer wall of the existing building and the outer wall of the extension / reconstruction building, so that the appearance is not impaired and air, sound, and rainwater can enter. Prevent and maintain a comfortable indoor environment.
[0012]
Further, as in the invention described in claim 4, a shroud facing outward is provided at the front end of the receiving plate, and a sealing material is filled in a gap between the edge of the exterior plate of the extension and renovation building and the weir plate. In addition to preventing rainwater from entering the back portion, it is possible to prevent impregnation of rainwater from the end face into the exterior plate and prevent deterioration of the exterior plate.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the present invention, the old part will be described as an existing building 101, the part to be newly expanded / reconstructed will be described as an expanded / reconstructed building 102, and the existing building 101 and the entire expanded / reconstructed building 102 will be described as an expanded / reconstructed building.
[0014]
The outer wall structure A of the extension / reconstruction building shown in FIGS. 1 to 3 includes a cover plate 51 extending over the entire upper and lower sides of the boundary portion at the boundary portion between the outer wall of the existing building 101 and the outer wall of the extension / reconstruction building 102.
[0015]
In the existing building 101 of this embodiment, a lightweight steel frame material 21 has three layers of an exterior plate 52 such as a calcium silicate plate, an ALC plate, and a vinyl chloride steel plate, and an interior plate 23 such as lauan plywood, softwood plywood, and gypsum board. A plurality of outer wall panels 24 pasted together are constructed by being joined and integrated through a joint metal (not shown). The outer wall panel 24 is filled with a heat insulating material 25 such as glass wool, rock wool, or polystyrene foam to improve heat insulation. If necessary, the existing building 101 is demolished partly by removing a part of the outer wall panel 24 and the extension / reconstruction building 102 is constructed continuously in that part.
[0016]
As shown in FIG. 5, the cover plate 51 has a substrate 71, a main plate 73 extending in parallel to the substrate 71 via a stepped portion 72 whose side edges are bent at right angles, and a tip edge thereof folded back into a key shape. It consists of folded pieces 74, and the substrate 71 is attached by being sandwiched between the exterior plate 52 of the existing building 101 and the base material 75 thereof.
[0017]
On the other hand, the extension / reconstruction building 102 according to the present embodiment includes a wooden frame material 27, an exterior plate 52, and an interior plate 23 in a frame structure in which a steel column 26 and a beam (not shown) are bolted and joined by welding or the like. The outer wall panel 28 to which is attached is attached and constructed. In this embodiment, a small auxiliary panel 30 having an exterior plate 52 and an interior plate 23 provided with a reinforcing plate 29 on the back surface is provided on the side of the existing building 101 of the pillar 26 adjacent to the existing building 101.
[0018]
The exterior plate 52 of the extension / reconstruction building 102 is formed to extend outside the main plate 73 of the cover plate 51 with a certain gap. Therefore, the cover plate 51 and the exterior plate 52 can slide in the direction of the surface of the outer wall of the extension / reconstruction building 102. Therefore, even if the behavior differs between the existing building 101 and the extension / reconstruction building 102 when an earthquake or traffic vibration occurs, The generation of stress in the body can be prevented, and deformation in the existing building 101 and the extension / reconstruction building 102 and breakage such as cracks in the exterior plate 52 can be prevented.
[0019]
The cover plate 51 can be formed of a steel plate, stainless steel, aluminum, synthetic resin, or the like. In this embodiment, the cover plate 51 is formed of a galvanium steel plate rich in elasticity. As a result, the cover plate 51 can be easily elastically deformed, and the deformation of the cover plate 51 absorbs the difference in behavior that occurs in the direction perpendicular to the outer wall surface of the extension and renovation building 102, and the existing building 101, It is possible to prevent deformation of the extension / reconstruction building 102 and damage to the exterior plate 52 such as cracking.
[0020]
Moreover, in this embodiment, the receiving plate 53 is provided on the back side of the exterior plate 52 of the extension / reconstruction building 102. The receiving plate 53 is formed of a steel plate, stainless steel, aluminum, synthetic resin, or the like, and has a watertight piece 54 and a weir plate 56 that are bent at right angles in opposite directions at both ends thereof, as shown in FIG.
[0021]
As shown in FIG. 2, the tip of the watertight piece 54 of the receiving plate 53 is in contact with the surface of the main plate 73 of the cover plate 51, so that there is a gap between the outer wall of the existing building 101 and the outer wall of the extension / reconstruction building 102. Occurrence is prevented and appearance is not impaired. Furthermore, a watertight material 55 such as neoprene rubber or sponge is interposed between the main plate 73 and the receiving plate 53 of the cover plate 51, thereby preventing the intrusion of air, sound and rainwater and maintaining the indoor environment comfortably. Yes.
[0022]
Further, in this embodiment, as shown in FIG. 2, a sealing material 57 is filled in a gap between the weir plate 56 provided outward at the front end of the receiving plate 53 and the edge of the exterior plate 52 of the extension / reconstruction building 102. In addition, it is possible to prevent rainwater from entering the back of the exterior plate 52, and to prevent impregnation of rainwater from the end surface into the exterior plate 52, thereby preventing deterioration of the exterior plate 52.
[0023]
In this embodiment, the interior side which is the indoor side surface of the outer wall is provided with the eye plate base 5, the eye plate 3 supported by the eye plate base 5, and the bottom joint 4. As shown in FIGS. 2 and 3, the eye plate base 5 is composed of a gypsum board, a plywood, a calcium silicate plate, and the like, and is attached to the base crosspiece 31. Further, a heat insulating material 25 is filled in the back of the eye plate base 5 to ensure heat insulation. The face plate 3 is made of gypsum board, plywood, calcium silicate plate, etc., is formed in a vertically long plate shape, and is laminated at the center on the face plate base 5 and attached by nail attachment or adhesion. On the surface of the face plate 3, an interior sheet that is the same as the interior sheet installed on the surface of the interior plate 23 of the existing building 101 and the extension / reconstruction building 102 or a color and pattern in harmony with these are installed. Finish. As shown in FIGS. 1 and 3, the surface of the eye plate 3 is formed to be substantially flush with the surfaces of the interior finishing layer 2 of the existing building 101 and the extension / reconstruction building 102, and maintains a good appearance.
[0024]
In addition, as shown in FIG. 2, between the interior finishing layer 2 of the extension / reconstruction building 102 composed of the eye plate 3 and the interior panel 23 of the auxiliary panel 30, and between the eye plate 3 and the interior finishing layer 1 of the existing building 101. The bottom joint 4 is formed by separating gaps (5 to 15 mm) of the same width. Under the earthquake and traffic vibration, the behavior differs between the existing building 101 and the extension / reconstruction building 102, and this causes deformation and displacement between the interior finishing layer 1 of the existing building 101 and the interior finishing layer 2 of the extension / reconstruction building 102. There are many cases. However, the bottom joint 4 absorbs the deformation and displacement, suppresses breakage such as cracks and wrinkles on the top plate 3 and the interior finishing layers 1 and 2 adjacent thereto, and prevents the appearance from being damaged. Some deformation does not require repair. In addition, even when deformation and damage are large and repair is required, the interior finishing layers 1 and 2 of the existing building 101 and the extension / reconstruction building 102 are left as they are, and repair such as replacement of the eye plate 3 is sufficient, and the construction is facilitated. To do. Furthermore, if a material that easily breaks due to an external force load exceeding a certain level, such as gypsum board, is used as the faceplate base 5, even if there is a difference in the behavior of the existing building 101 and the extension / reconstruction building 102, Absorb. Therefore, the interior plate 23 of the existing building 101 and the extension / reconstruction building 102 does not generate stress due to the difference in behavior, and in combination with the action of the bottom joint 4, no damage is caused on both sides. .
[0025]
The outer wall structure B of the extension / reconstruction building shown in FIG. 4 is the same as the outer wall structure A of the extension / reconstruction building in the configuration of the outer side of the outer wall, but the eye plate base 5 is a pair of base components 5a, 5b. Consists of. The groove 33 formed on the side surface of one base component 5a is slidably fitted with the convex portion 34 formed on the opposite side surface of the other base component 5b. The difference in behavior can be absorbed. In addition, the eye plate base 5 is not damaged and does not require any repairs. The eye plate 3 is laminated at the center on the eye plate base 5, and is fixed to one base component 5a only by nailing or bonding. Further, both the base constituent members 5a and 5b are respectively attached to the base crosspiece 31 at the back portion thereof.
[0026]
The outer wall structure C of the extension / reconstruction building shown in FIGS. 8 and 9 is employed when the outer wall of the extension / reconstruction building 102 is added at a right angle to the outer wall surface of the existing building 101. In this embodiment, as shown in FIG. 7, the cover plate 51 has a substrate 71, a main plate 73 extending at a right angle to the substrate 71 via a key portion 76 on its side edge, and a tip edge thereof folded back into a key shape. It consists of folded pieces 74, and the substrate 71 is attached to the surface of the exterior plate 52 of the existing building 101 with screws. As the receiving plate 53, the same one as the outer wall structure A of the extension / reconstruction building shown in FIG. 6 is adopted.
[0027]
In addition, a face plate 3 is provided between the surface of the interior finishing layer 1 of the existing building 101 and the side surface of the interior finishing layer 2 of the extension / reconstruction building 102 via the bottom road 4. The eye plate 3 is laminated and attached to the eye plate base 5 which is easily damaged by an external force load such as a plaster board, and the surface thereof is formed substantially flush with the surface of the interior finishing layer 2 of the extension / reconstruction building 102.
[0028]
【The invention's effect】
As described above, in the present invention, and the substrate renovation building side of the outer wall of existing housing building, the cover plate having a main plate that extends parallel to the substrate via a stepped portion bent the side edges the with Keru mounted in sandwiched between the substrate of the outer plate and the base material of the existing housing building, to extend the outer casing of the renovation building at regular intervals on the outer side of the main plate of the cover plate, the cover plate Because the exterior plate of the extension / reconstruction building is slidable in the direction of the surface of the outer wall of the extension / reconstruction building, even if the behavior of the existing building and the extension / reconstruction building is different, No stress is generated in the structure, and it is possible to prevent deformation in an existing building or an extension / reconstruction building, or damage such as a crack in an exterior plate.
[0029]
In the invention according to claim 2, since the cover plate is formed of an elastic plate material, the deformation of the cover plate absorbs the difference in behavior that occurs in the direction perpendicular to the outer wall surface of the extension and remodeling building, It can prevent deformation in existing buildings and extension and renovation buildings, and breakage such as cracks in exterior panels.
[0030]
In the invention according to claim 3, since the tip of the water-tight piece provided at the tip of the receiving plate toward the cover plate contacts the surface of the cover plate and a water-tight material is interposed between the two, Because there is no gap between the outer wall of the building and the outer wall of the extension / renovation building, the appearance is not impaired, the ingress of air, sound, and rainwater can be prevented, and the indoor environment can be maintained comfortably.
[0031]
In the invention according to claim 4, since the sealing material is filled in the gap between the edge of the exterior plate of the extension and renovation building and the dam plate, it is possible to prevent the intrusion of rainwater into the back of the exterior plate and from the end surface to the exterior It can prevent impregnation of rainwater into the board and prevent deterioration of the exterior board.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating an embodiment of the present invention.
FIG. 2 is an enlarged view showing the main part.
FIG. 3 is an exploded perspective view thereof.
FIG. 4 is a cross-sectional view of a different embodiment of the present invention.
FIG. 5 is a perspective view showing a cover plate.
FIG. 6 is a perspective view showing a receiving plate.
FIG. 7 is a perspective view showing a cover plate of a different form.
FIG. 8 is a cross-sectional view of yet another embodiment of the present invention.
FIG. 9 is an enlarged view showing the main part.
[Explanation of symbols]
51 Cover plate 52 Exterior plate 53 Base plate 54 Watertight piece 55 Watertight material 56 Barrage plate 57 Sealing material 101 Existing building 102 Extension and renovation building

Claims (4)

In the boundary portion of the outer wall of the outer and renovation building already built buildings, the renovation building side of the outer wall of existing housing buildings, Ri Wataru across the upper and lower boundary of the parallel and the outer wall in the direction of the surface of the outer wall of the renovation building , substrate and, Keru sandwiched to attached between the outer casing and the base material of the existing housing buildings cover plate the substrate having a main plate and that extends in parallel to the substrate via a stepped portion bent the side edges In addition, the exterior plate of the extension / reconstruction building is extended outside the main plate of the cover plate at a certain interval so that the cover plate and the outer wall plate of the extension / reconstruction building can slide in the surface direction of the outer wall of the extension / reconstruction building. The outer wall structure of an extension and renovation building characterized by this. 2. The outer wall structure of an extension and reconstructed building according to claim 1, wherein the cover plate is formed of an elastic plate material. A backing plate is attached to the back side of the exterior plate of the extension and renovation building. The outer wall structure of an extension and remodeling building according to claim 1 or 2, characterized by comprising Increasing according to any one of claims 1 to 3 to the distal end of the receiving plate a weir plate toward the outer provided, characterized by filling the sealing material to the edge and the clearance of the sheathing board of the exterior plate of the renovation building Exterior wall structure of a renovated building.

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