JPH0932310A - Reinforcement method for existing wooden buildings - Google Patents

Abstract

(57) [Abstract] [Problem] The most effective way to reinforce an existing wooden building is to attach braces to the frame of the wall.
In order to install braces in an existing building, it is necessary to peel off the exterior and interior materials on the outer wall to expose the framework, install the braces, and then attach the exterior and interior materials again. There were issues such as large scale. SOLUTION: A three-dimensional wire mesh 3 is attached to the outer wall surface of an existing wooden building, and shot mortar or shot concrete 7 is sprayed on it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a method for reinforcing an existing wooden building such that an existing wooden building such as an existing wooden house can be easily reinforced.

[0002]

2. Description of the Related Art The most effective way to reinforce an existing wooden building is to attach a bracing to the frame of the wall part, but to install a bracing in an existing building. Requires the exterior and interior materials of the outer wall to be peeled off to expose the framework, and after the braces have been installed, the exterior and interior materials must be reattached, which poses a problem such as large-scale construction. It was

Even if the braces can be attached, it has been a problem whether or not existing structural members such as pillars are deteriorated and can sufficiently cooperate with the braces.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for reinforcing an existing wooden building, which makes it possible to easily reinforce the existing wooden building.

[0005]

According to a first aspect of the present invention, there is provided a reinforcing method for an existing wooden building, in which a three-dimensional wire mesh is attached to an outer wall surface of the existing wooden building, and shot mortar or shot concrete is placed on the three-dimensional wire mesh. It is characterized by spraying.

According to a second aspect of the present invention, there is provided a method for reinforcing an existing wooden building, wherein a shot concrete wall body constructed by spraying shot mortar or shot concrete onto a three-dimensional wire mesh is used as an outer wall surface of an existing wooden building. It is characterized by being attached and fixed.

According to a third aspect of the present invention, the method of reinforcing an existing wooden building is the same as the second aspect, in which the three-dimensional wire net is two flat wire nets installed in parallel, and the flat wire net is between the flat wire nets. It is characterized by comprising a plurality of lattice muscles connected to and attached to.

According to a fourth aspect of the present invention, there is provided a reinforcing method for an existing wooden building, wherein the outer wall surface of the existing wooden building is a truss-shaped horizontal structure located on the floor level of the second floor. It is characterized in that a stiffening member is attached.

[0009]

1 to 11 show an existing wooden building remodeled by a method of reinforcing an existing wooden building according to the present invention. In the drawings, reference numeral 1 is a pillar, a beam, a stud,
Frame of an existing wooden building that has been constructed with streaks, etc., 2
Is an existing exterior material that is attached to the outside of the frame 1 by nailing or the like and constitutes an existing outer wall surface.

Reference numeral 3 is attached to the outer wall surface of the exterior material 2 and is a three-dimensional wire net fixed to a structural member such as a pillar by a fastener 4, and 5a and 5b are arranged in the three-dimensional wire net 3 vertically and horizontally. Around the openings 6 such as windows and doorways,
Longitudinal and lateral reinforcing bars that reinforce the projected corners (corners) of the wall surface, 7 is sprayed onto the three-dimensional wire mesh 3, shot mortar or shot concrete forming a new wall surface, and 8 is attached around the opening 6. Drainer,
Reference numeral 9 is a caulking material filled around the opening 6. Both the draining member 8 and the caulking material 9 perform waterproof treatment around the opening 6 (when the existing wall and the reinforcing wall are used).

Further, reference numeral 13 indicates a parallel string truss shape, for example, by straddling a plurality of diagonal members between two string members that are extended in parallel, and the three-dimensional wire net 3 and the shot mortar or shots are provided. In order to enhance the reinforcing performance of the reinforcing wall constituted by the concrete 7, it is a horizontal stiffening member that is horizontally projected on the outer wall surface of the existing wooden building at the floor level of the second floor. The chord members and diagonal members of the horizontal stiffening member 13 are H
It is formed from shaped steel such as shaped steel and angle steel.

In the three-dimensional wire net 3, two flat wire nets 3a are installed in parallel, and the two flat wire nets 3a and 3a are connected to a plurality of lattice lines 3.
By connecting with b, it has a rectangular plate shape that can be handled manually (see Fig. 4 (a)). Flat wire mesh 3a
And the lattice muscle 3b are integrally connected by welding.

For the fastener 4, for example, a screw bolt with a hook having a hook 4a for hooking the three-dimensional wire net 3 and a male screw portion 4b screwed into the framework 1 is used.

The shot mortar or shot concrete 7 is cast in such a manner that the three-dimensional wire mesh 3, the vertical and horizontal reinforcing bars 5a, 5b are completely filled and the shot mortar or shot concrete 7 has a uniform thickness.
The draining member 8 is formed of a metal plate.

Next, the method of reinforcing the existing wooden building according to the present invention will be described step by step.

(1) First, the three-dimensional wire netting 3 is attached to the outside of the exterior material 2 of the existing wooden building over its entire surface. In this case, when the exterior material 2 is mortar-coated, tiled, or plate-covered, the three-dimensional wire netting 3 is directly attached to the exterior material 2 and is firmly attached to the structural member 1 such as a pillar by a plurality of hook bolts 4. Fixed to.

In this case, the horizontal stiffening member 13 is attached to the existing building 2
By horizontally projecting at the floor level, the reinforcing effect of the reinforcing wall is further enhanced. It should be noted that the horizontal stiffening member 13 is firmly fixed to the structural member 1 such as a beam on the second floor by hook bolts 4 together with the one-dimensional chord member 3D.

If the wall surface of the existing building is finished with a thin exterior material such as a siding board, the exterior material 2
The three-dimensional wire netting 3 is attached on the base material on which the exterior material 2 is attached. Also, three-dimensional wire mesh 3
Reinforcing flat wire nets 10a and 10b (see Fig. 4 (b) and (c)) are attached to the joints between the seams and the wall surface (corners) to surround the openings 6 such as windows and doorways. The vertical and horizontal reinforcing bars 5a, 5b are reinforced as necessary at the corners of the wall surface and the upper end of the three-dimensional wire netting 3 to reinforce them. Is adhered to the soil concrete 11 such as dog running placed around the foundation 12 (Fig. 3 (b)), or embedded along the foundation 12 in the ground (see Fig. 3 (a)). . Also, the three-dimensional wire netting 3 is attached to the entire back of the eaves.

It should be noted that it is extremely convenient to use a three-dimensional wire net which is preliminarily formed in an L shape as the three-dimensional wire net attached to the projected corner portion (corner portion) of the wall surface portion. By cutting the flat wire net 3a on one side of the wire net 3 and bending the cut portion into an L-shape, it can be easily processed for a corner portion. Rather, it is preferable because it is not bulky when transporting the three-dimensional wire netting.

(2) Next, shot mortar or shot concrete 7 is sprayed on the three-dimensional wire net 3 so as to completely fill the three-dimensional wire net 3 and have a uniform thickness.

A shot concrete wall body (not shown) that can be carried by spraying shot mortar or shot concrete 7 onto the three-dimensional wire net 3 is formed into a rectangular plate shape, and this shot concrete wall body is fastened to the wall surface of an existing building with a fastener. It may be attached by fixing metal fittings such as.

[0022]

EFFECTS OF THE INVENTION The method for reinforcing an existing wooden building according to the present invention has the structure described above, and a three-dimensional wire mesh is attached to the outer wall surface of the existing wooden building, and shot mortar or shot concrete is sprayed on it. The existing wooden building can be reinforced very easily, the earthquake resistance and soundproofing of the existing wooden building can be remarkably enhanced, and the sound insulation and heat insulating properties are also improved.

A rectangular plate-shaped shot concrete wall body that can be carried by spraying shot mortar or shot concrete 7 onto a three-dimensional wire mesh is constructed, and this shot concrete wall body is fixed to a wall surface of an existing building by a fastener such as a fastener. If it is attached, there is an effect that the construction period can be shortened due to the labor saving on site construction.

Further, by horizontally projecting the horizontal stiffening member at the second floor level of the existing building, the reinforcing effect of the reinforcing wall can be further enhanced.

Further, the three-dimensional wire net is composed of two flat wire nets installed in parallel and a plurality of lattice lines connected between the flat wire nets and connected to the flat wire net. It can be easily manufactured and mass-produced. .

[Brief description of drawings]

FIG. 1 is a perspective view of an existing wooden building remodeled by a method of reinforcing an existing wooden building according to the present invention.

FIG. 2 is a schematic plan view of the existing wooden building shown in FIG.

3 (a) and 3 (b) are sectional views taken along the line aa in FIG.

FIG. 4A is a perspective view of a three-dimensional wire mesh, and FIGS. 4B and 4C are perspective views of a reinforcing flat wire mesh.

5 is a partial side view of the existing wooden building shown in FIG. 1. FIG.

6 is a vertical cross-sectional view of FIG.

[Fig. 7] (a) is a cross-sectional view of the opening of an existing wooden building, (b)
FIG. 6B is a sectional view taken along line bb in (a).

[Explanation of symbols]

1 ... Shaft, 2 ... Exterior material, 3 ... Three-dimensional wire mesh, 4 ... Fasteners, 5a, 5b ... Vertical, horizontal reinforcing bars, 6 ... Opening, 7 ... Shot mortar or shot concrete, 8 ... Draining member, 9 ... Caulking Material, 10a, 10b… Reinforcing flat wire mesh, 11…
Earth concrete, 12 ... Foundation, 13 ... Horizontal stiffening member.

Claims (4)

[Claims] 1. A method of reinforcing an existing wooden building, characterized in that a three-dimensional wire mesh is attached to the outer wall surface of the existing wooden building, and shot mortar or shot concrete is sprayed onto the three-dimensional wire mesh. 2. A reinforcing method for an existing wooden building, characterized in that a shot concrete wall body formed by spraying shot mortar or shot concrete onto a three-dimensional wire mesh is attached and fixed to the outer wall surface of the existing wooden building. 3. The three-dimensional wire net comprises two flat wire nets installed in parallel, and a plurality of lattice lines connected between the two flat wire nets and connected to the flat wire net. The method for reinforcing an existing wooden building according to claim 1 or 2, wherein: 4. A truss-shaped horizontal stiffening member, which is located at the floor level of the second floor, is attached to the outer wall surface of an existing wooden building. Reinforcement method for existing wooden buildings described in paragraph 3.