JP2002357005A - Rebuilding method for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a cost and improve workability in a rebuilding method for a building in which an opening section is formed to an existing wall panel for the building. SOLUTION: The method for rebuilding the building contains an opening- section forming process in which the opening section is formed between vertical frame materials 2 and 2 in the existing wall panel P1 for the building, a foundation new-construction process in which an anew constructed foundation in which an anchor bolt is implanted is annexed outside an existing foundation supporting the existing wall panel and a fixing process in which the vertical frame materials on both sides of the opening section and the anchor bolt are connected by fixtures.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of remodeling a house, for example, which can easily form an entrance to an extension part of a house to be added to a built-in wall panel, thereby improving workability.

[0002]

2. Description of the Related Art In recent years,
As shown in FIGS. 11A and 11B, a large wall panel P having a width of about 3 to 5 times that of the reference module, for example, 90 cm, is connected using a connecting metal to form a wall W of a house. Panel-building houses are often used. In recent years, various methods have been proposed for extending or renovating such a panel construction house.

For example, when an extension part b of a one-story building is to be added to a house a of this panel method, an existing wall panel P1 facing the extension part b (hereinafter referred to as “an existing wall panel P1 facing the extension part b”) Is simply referred to as “wall panel P1”.), And as shown in FIG.
Is fixed (for example, Japanese Patent Publication No. 6-96916).

[0004] However, in such a method, since the existing wall panel P1 cannot be effectively used, waste of material occurs and the rebuilding cost increases. In addition, since work such as removal of the existing wall panel P1 and installation of a new wall panel d is required, the construction is large and, in some cases, the construction time is increased, resulting in poor workability.

The present invention has been devised in view of the above problems, and has an opening forming step of forming an opening between vertical frame members of an existing wall panel of a house, and an anchor bolt. A new foundation step of attaching a new foundation having the following to the outside of the existing foundation on which the existing wall panel is supported, and connecting the vertical frame members on both sides of the opening and the anchor bolts with fixing brackets. The purpose is to provide a method of rebuilding a house that can be reused effectively without removing existing wall panels, reducing rebuilding costs and improving workability, basically including I have.

[0006]

According to a first aspect of the present invention, an opening forming step for forming an opening between vertical frame members of an existing wall panel of a house, and an anchor bolt are provided. A new foundation step of attaching the newly installed foundation to the outside of the existing foundation on which the existing wall panel is supported, and connecting the vertical frame members on both sides of the opening and the anchor bolts with fixing brackets. This is a method of remodeling a house, which includes a fixing step.

According to a second aspect of the present invention, in the opening forming step, an opening extending from a floor surface is formed by cutting a face material between the vertical frame members from a lower end thereof. This is a house renovation method according to item 1.

According to a third aspect of the present invention, there is provided the fixing device, wherein the fixing member includes a base fixed to an upper surface of a new foundation, and the vertical frame member rising from the base and parallel to a wall surface of the existing wall panel. The method according to claim 1 or 2, further comprising a first standing piece fixed to the surface by bolts.

According to a fourth aspect of the present invention, the fixing bracket is fixed to a base fixed to an upper surface of a newly-installed foundation, and is bolted to an inner surface rising from the base and facing the opening of the vertical frame member. 3. The method according to claim 1, wherein the second standing piece is integrally provided. 4.

According to a fifth aspect of the present invention, there is provided a method of remodeling a house according to any one of claims 1 to 4, wherein the opening forms a doorway between an existing part and an extension part of the house. It is.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 11A, when an extension part b of, for example, a one-story house is attached to a house a by the panel construction method, an existing wall panel P1 downstairs is installed.
An example in which an opening O which forms an entrance and exit between an existing part and an extension part will be described.

FIG. 1 is a partial perspective view of the existing wall panel P1 of a house before renovation, and FIG. 2 is an exploded perspective view of the wall panel P1. The lower end of the existing wall panel P1 is supported on the existing foundation B1 via the connecting fittings L1 and L1, and the upper end is fixed to the upper wall panel D using a connecting fitting (not shown). Is done.

As shown in FIG. 2, the pre-built wall panel P1 comprises a rectangular frame 4, an inner face material 5 provided inside and outside the frame 4, and an outer face material 6, for example. The module is configured as a large load-bearing wall panel P. The framework 4
Is formed by fixing a vertical frame member 2 extending vertically and an upper horizontal frame member 3a and a lower horizontal frame member 3b joining the upper and lower ends of the vertical frame member 2. In addition, the vertical frame member 2 includes a pair of vertical frame members 2a, 2a arranged on both outer sides of the frame set 4, and a middle vertical frame member 2b arranged between them. The vertical frame member 2 and the horizontal frame member 3 are
Each of the webs 2A is formed of a U-shaped grooved steel having flanges 2B provided at both ends thereof, and the vertical frame member 2a on the side and the upper and lower horizontal frame members 3a, 3b are fixed in a rectangular shape with the groove portions facing inward. Is done. The inside of the framework 4 may be filled with a heat insulating material such as a foamed resin (not shown).

The inner face material 5 is made of, for example, a plate-like interior material with an interior finish, and the outer face material 6 is made of an exterior material with an exterior finish. These face materials 5 and 6 are fixed to the framework 4 with screws.
The connection fitting L1 is fixed to an anchor bolt (not shown) extending upward from the foundation B1 using a nut.

In the rebuilding method according to the present invention, as shown in FIG. 3, an opening forming step for forming an opening O between a pair of adjacent vertical frame members 2, 2 is first formed on an existing wall panel P1. Do. In the opening forming step of this example, the inner face material 5 is
This is done by notching at the width between the vertical frame members 2 without removing it. On the other hand, the outer face material 6 (shown in FIG. 1) is removed from the frame 4 in this example, and is attached to another face material 7 which has been subjected to interior finishing and provided with an opening having the same shape as the inner face material 5. It is done by changing. Thereby, the opening O is formed in the existing wall panel P1.

Since the outer surface material 6 has an exterior finish, if it is used as it is, the appearance is impaired as a partition when the extension part b is used as a living room. However, when the extension is, for example, a storeroom or a garage, and the appearance is not particularly concerned, the outer face material 5 made of the exterior material is cut off between the vertical frame materials 2 and 2 like the inner face material 5. Of course, it is also possible to use it. In the present embodiment, the opening O is used as an entrance / exit between the existing part and the extension part, so that it extends from the lower end of the face material 5 and has a height of about 1800 mm and a width of about 90 mm. However, it goes without saying that the opening O can be formed into various shapes depending on the application.

Next, in the present invention, as shown in FIGS.
A new foundation step of attaching the new foundation B2 having the anchor bolts 9 to the outside of the existing foundation B1 on which the existing wall panel P1 is supported is performed. As shown in FIG. 4, a new foundation B2 is first provided with a hole in the outer surface of the existing foundation B1, and the bolt 11 is filled with an adhesive such as mortar and fixed thereto. An anchor plate 10 having an anchor bolt 9 protruding therefrom is connected to a nut 12a.
Fix using 12b. Reinforcing bars 14, 14 are projected from the anchor plate 10, and the reinforcing bars 14, 16 for a new foundation B2 are provided using the reinforcing bars 14.
After joining, a new foundation B2 is attached by forming a formwork and pouring concrete or the like. Thereby, the newly installed foundation B2 can be integrated with the existing foundation B1. The anchor bolts 9 are formed upward on both sides of the opening O.

In the present embodiment, as the new foundation B2, a reconstruction base part B2a extending parallel to the wall panel P1 and located on the footing portion of the existing foundation B1, and a foundation part B2a for this reconstruction Therefore, in this example, the base portion B2b extending at a right angle is formed. Further, in this example, the example in which the new foundation step is performed after performing the opening forming step is illustrated. However, it is of course possible to perform the new foundation step prior to the opening forming step. There is no particular limitation.

Next, in the present invention, as shown in FIG. 5, the vertical frame members 2 on both sides of the opening O of the wall panel P1 (that is, the vertical frame members 2b, 2b in the present embodiment) and the new foundation A fixing step of connecting the anchor bolt 9 rising from B2 with the fixing bracket K is performed. For example, as shown in an enlarged manner in FIG. 6, the fixing bracket K includes a horizontal plate-shaped base 17 fixed on the upper surface of the newly installed base B2 using the anchor bolt 9 and the nut 20, and the base 17. And fixed to the mounting surface of the vertical frame member 2 (the outer surface of the flange 2B in this example) parallel to the wall surface of the existing wall panel P1 with bolts 21.
And the standing piece 19 are integrally provided.

The flange 2B of the vertical frame member 2 to which the bolt 21 is attached has a hole through which the bolt 21 can be inserted, for example, when the outer face member 6 is removed, and a nut fitting is provided on the back surface thereof. It may be welded or a new face material 7
Prior to mounting, the fixing bracket K and the vertical frame 2
1. It can also be fixed using a nut (not shown). Note that the face material 7 has a cutout portion 7a in which a portion of the fixing bracket K is cutout. Thereafter, in this example, the extension portion is constructed by fixing the wall panel P3 and the like of the extension portion to the extension base portion B2b.

As shown in FIG. 7, the fixing bracket K includes a base 17 fixed to the upper surface of a newly installed base B2.
And the vertical frame 2
The second standing piece 22 fixed to the inner surface 2i (i.e., the web 2A) facing the opening O side may be integrally provided. This fixing bracket K can be used together with the one shown in FIG.

When the opening O as described above is formed in the wall panel P1, the area of the face materials 5, 7 is reduced. Such a decrease in the area of the face material causes a decrease in the shear deformation resistance of the face material, and consequently, the strength of the wall panel against horizontal force. However, as in the present invention, by fixing the vertical frame material 2 on both sides of the opening O and the base B2 with the fixing metal K, the lower end of the wall panel P1 is connected to the connecting metal L.
It is fixed on the bases B1 and B2 at four places including the fixing brackets K and K in addition to the bases B1 and L1. Thereby, also in the wall panel P1 provided with the opening O, it is possible to increase the shearing deformation resistance against horizontal force and prevent the reduction of the resistance. In addition, since the wall panel P1 mainly bears the vertical force by the framework 4, in the present invention which does not require remodeling to the framework, a decrease in strength in this direction cannot substantially occur.

In the rebuilding method according to the present invention, the wall panel P1 can be used instead of replacing the wall panel P1 as in the prior art, so that the rebuilding can be performed at low cost. Furthermore, in the method of the present invention, it is not necessary to remove the existing wall panel P1 from the foundation B1, so that the workability can be improved and the construction time can be shortened.

8 to 10 show other embodiments of the present invention. In FIG. 8A, in the wall panel P1 of the 4-pitch module, the side vertical frame member 2a and the middle vertical frame member 2b
FIG. 3 shows an opening O formed by cutting out a face material between the two. In this case, since the side vertical frame member 2a is fixed to the foundation B1 with the connecting metal member L1, one fixing metal member K may be connected to the middle vertical frame member 2b and the newly installed base member B2.

In FIG. 8B, in the 4-pitch module wall panel P1, two face members between the side vertical frame member 2a and the middle vertical frame member 2b are cut away and separated. The figure shows two openings O, O formed. Also in this case, the vertical frame members 2a, 2a on the side are connected to the base B1 by the connecting fitting L1.
Therefore, the fixing bracket K is connected to the inner vertical frame member 2b and the newly installed foundation B2, respectively. In FIG. 8C, one opening O is provided between the vertical frame members 2b and 2b.
And an example in which one opening O is formed between the side vertical frame member 2a and the middle vertical frame member 2b.

FIG. 9A shows a wall panel P1 of a 4-pitch module having a window opening frame N. This window opening frame N is a horizontal middle frame member 3 between the middle frame members 2b and 2b.
c and 3d are arranged. Such a wall panel P1
For example, as shown in FIG. 9 (B), the lower surface material of the window opening frame N is cut out, and the middle horizontal frame material 3d is removed, so that the space between the middle vertical frame materials 2b and 2b is reduced. Openings O having a pitch width can be formed. In addition, a fixing bracket K is fixed to the inner vertical frame member 2b.

FIG. 10A shows a three-pitch module wall panel P1 having a window opening frame N. FIG. The window opening frame N is defined by arranging horizontal middle horizontal frame members 3c and 3d between the side vertical frame member 2a and the middle frame member 2b. Also in such a wall panel P1, as shown in FIG. 10B, the window opening frame N is similar to the wall panel P1 of the 4-pitch module.
By notching the lower face material of the lower part and removing the middle horizontal frame material 3d, an opening O having a two-pitch width can be formed between the middle vertical frame materials 2b, 2b.

Further, in the above embodiment, the remodeling method of the present invention has been described as forming the opening O which forms the entrance and exit between the existing part and the extension part of the house in the existing wall panel P1. The present invention can naturally be applied to a case where an entrance, a service entrance, and other entrances and the like are formed in an existing wall panel P1 of a house without performing such operations. In this case, the existing wall panel P1 forms the opening O by notching without removing the inner and outer face materials 5 and 6 between the vertical frame materials 2 and 2 and using the double-face materials 5 and 6 as they are. Can be.

[0029]

As described above, the present invention provides an opening forming step for forming an opening between vertical frame members of an existing wall panel of a house, and a new foundation in which anchor bolts are planted. And a fixing step of connecting the vertical frame members on both sides of the opening and the anchor bolts with fixing brackets. As a result, it is possible to effectively reuse the existing wall panel without removing it, reduce the rebuilding cost and improve the workability.

According to a second aspect of the present invention, in the opening forming step, when the opening extending from the floor surface is formed by cutting the face material from a lower end thereof,
This opening can be used as a doorway to an entrance or an extension part, and versatility can be enhanced.

According to a third aspect of the present invention, the fixture includes a base fixed to an upper surface of a newly-installed foundation, and the vertical frame member rising from the base and parallel to a wall surface of the existing wall panel. When the first standing piece which is bolted to the mounting surface is integrally provided, the base and the first standing piece are fixed to the new foundation and the vertical frame material, respectively, thereby facilitating attachment and improving workability. Can be greatly improved. The horizontal force acting on the wall panel can be borne by the shearing force of the bolt.

According to a fourth aspect of the present invention, the fixture includes a base fixed to an upper surface of a newly-installed foundation, and an inner surface rising from the base and facing the opening side of the vertical frame member. When the second standing piece to be bolted is integrally provided, the base portion and the second standing piece are respectively bolted to a new foundation and a vertical frame member, thereby facilitating attachment and greatly improving workability. Can be improved.

Further, as in the invention according to claim 5, when the existing wall panel is used as an entrance and exit between an existing portion and an extension portion of a house, it helps to reduce the cost for extension.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of an existing wall panel of a house showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a wall panel.

FIG. 3 is a partial perspective view of an existing wall panel for explaining an opening forming step and a new foundation setting step.

FIG. 4 is a longitudinal sectional view of FIG.

FIG. 5 is a perspective view showing an already-built wall panel after construction.

FIG. 6 is a perspective view showing an example of a fixture.

FIG. 7 is a perspective view showing another example of the fixing bracket.

8A to 8C are front views of a wall panel showing another example of the opening.

FIGS. 9A and 9B are front views of a wall panel showing another example of the opening.

FIGS. 10A and 10B are front views of a wall panel showing another example of the opening.

11A and 11B are schematic diagrams illustrating an example of extension of a house.

[Explanation of symbols]

 Reference Signs List 2 vertical frame material 2a vertical frame material 2b vertical frame material in 2B 3 horizontal frame material 4 frame 5 inside surface material 6 outside surface material 7 new surface material 9 anchor bolt B1 existing foundation B2 new foundation K Fixing P Wall panel P1 Existing wall panel facing the extension

Claims (5)

[Claims] An opening forming step for forming an opening between vertical frame members of an existing wall panel of a house, and the existing wall panel is supported on a new foundation having anchor bolts. A method for remodeling a house, comprising: a new foundation installation step provided outside an existing foundation; and a fixing step of connecting vertical frame members on both sides of the opening and the anchor bolts with fixing brackets. 2. The remodeling of a house according to claim 1, wherein in the opening forming step, an opening extending from a floor surface is formed by cutting a face material between the vertical frame members from a lower end thereof. Construction method. 3. The fixing bracket according to claim 1, further comprising: a base fixed to an upper surface of a new foundation; and a bolt rising from the base and fixed to a mounting surface of the vertical frame member parallel to a wall surface of the existing wall panel. 3. The method of rebuilding a house according to claim 1, wherein the standing piece is integrally provided with the standing piece. 4. The base according to claim 1, wherein said fixture comprises a base fixed to an upper surface of a newly-installed foundation, and a second part rising from said base and being bolted to an inner surface of said vertical frame member facing said opening.
3. The method of rebuilding a house according to claim 1, wherein the standing piece is integrally provided. 5. The method according to claim 1, wherein the opening forms an entrance for an existing part and an extension part of the house.