JP2015129385A - Earthquake-resisting wall reinforcement method and structure therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which conventional earthquake-resisting wall reinforcement methods cannot comply with customer's demands for improvement in landscape and designability.SOLUTION: There is provided an earthquake-resisting wall reinforcement method that includes providing a metallic lattice frame body in a frame enclosed with columns and beams of an existing building, and arranging a woody block 1 in the metallic lattice frame body.

Description

  The present invention relates to a method of reinforcing a seismic wall for an existing building and a structure thereof for reinforcing a seismic wall with a wooden block that meets customer needs.

  Conventionally, in the seismic wall reinforcement method for existing buildings, for example, as described in Patent Document 1, a large number of blocks made of iron short rectangular tubes are placed in a frame surrounded by columns and beams. A seismic wall reinforcing method is known in which the steel blocks are stacked so that the end surfaces are flush with each other, partitions are formed, and the portions facing each other are joined together to shorten the work period with good workability. In addition, a seismic wall reinforcement method is known in which an RC earthquake resistant wall, a reinforced concrete block wall, and the like are arranged.

Japanese Patent Application Laid-Open No. 11-071907

  However, in the structure by the conventional seismic wall reinforcement method, all are inorganic materials, such as concrete and steel frames, the scenery is bad, and it cannot be made into a structure with design. Furthermore, it cannot meet the demands of customers for improving the scenery and design. The seismic wall reinforcing method and its structure according to the present invention have been proposed to solve such problems.

  The gist of the present invention for solving the above-mentioned problems of the seismic wall reinforcing method according to the present invention is to provide a metal lattice frame in a frame surrounded by columns and beams of an existing building, The wood block is arranged in the lattice frame.

The wooden blocks are arranged in a staggered arrangement.
Further, the wood block is formed by laminating anisotropic wood by alternately changing the fiber direction of anisotropic wood, or a single block of isotropic wood or isotropic wood has an adhesive layer. It is composed of an adhesive block laminated through.

  The gist of the present invention for solving the above-described problems of the seismic wall reinforcing structure according to the present invention is to provide a metal lattice frame in a frame surrounded by columns and beams of an existing building, That is, a wood block is arranged in the lattice frame.

The wooden blocks are arranged in a staggered arrangement.
Further, the wood block is a laminate of anisotropic timbers by alternately changing the fiber direction of anisotropic timber, or a single block of isotropic timber or isotropic timber via an adhesive layer. This includes a laminated adhesive block.
Further, the lattice frame of the metal lattice frame includes that the protrusions for positioning the wood block are provided on at least two orthogonal wall surfaces of the lattice frame.

  According to the seismic wall reinforcing method and its structure of the present invention, natural wood can be used for the appearance, so the landscape of the entire seismic wall is improved and the design is excellent. In addition, since the seismic wall reinforcing method according to the present invention has a simple configuration and is easy to handle, it can be constructed quickly and can fully meet the needs of customers.

The wood block itself is a combustible material, but the earthquake resistant wall does not always bear a load, so fire resistance is not necessary. Therefore, the wooden block can be used for the seismic wall, and at the time of an earthquake, it exhibits a large deformation capacity and is less damaged.
In addition, this seismic wall reinforcement structure is lightweight as a whole, and it is easy to install and remove the seismic wall reinforcement structure from the frame, and it is easy to install, and the wooden block itself is lightweight, so it can be stored and transported. Is also advantageous in that it is convenient.

It is a front view of the Example which shows the earthquake-resistant wall reinforcement structure which concerns on this invention. It is a partially expanded perspective view of the seismic wall reinforcing structure. It is explanatory drawing (A) and (B) which show the structure of a wood block. It is a partially expanded front view which shows the other Example of a metal lattice frame.

  As shown in FIG. 1, the seismic wall reinforcing method according to the present invention is constituted by a wooden block 1 having a natural landscape.

  In the seismic wall reinforcing method according to the present invention, a metal lattice frame 6 is provided in a frame 5 surrounded by columns 3 and beams 4 of an existing building 2, and the metal lattice frame 6 is provided in each lattice. This is a seismic wall reinforcing method in which a wooden block 1 is disposed.

  The wooden blocks 1 are arranged in a staggered arrangement on a metal lattice frame 6 as shown in FIGS. In addition, as shown in FIG. 3 (A), the wood block 1 is obtained by alternately changing the fiber direction of the anisotropic wood, so that the anisotropic wood (size is □ 500 mm as an example) 1a, 1b, Adhesion is performed using an epoxy organic adhesive, and the layers are laminated (thickness: 100 to 200 mm).

  Alternatively, the wood block 1 is a single block 1c of isotropic wood such as laminated lumber as shown in the upper diagram of FIG. In addition, the wood block 1 is an adhesive block 1d in which isotropic wood is laminated via an adhesive layer, as shown in the lower part of FIG. 3B. Which wood block 1 is selected is set according to the customer's request.

  The metal lattice frame 6 is made of iron or steel, for example. These are previously welded at a factory or site to form a grid. And the surface treatment of a welding part is performed. Further, as shown in FIG. 2, fixing holes 6a for attaching and fixing the wood block 1 are drilled through each of the lattices of the metal lattice frame 6 so as to penetrate the upper and lower, left and right four places. ing.

  Furthermore, as another embodiment, as shown in FIG. 4, projections 6 b by half punch may be provided on both surfaces on the wall surface of each lattice of the metal lattice frame 6. This is because when the wood block 1 is installed in each lattice, the projection 6b is present, so that the size of the inner side connecting the vertices of the projection 6b and the size of the wood block 1 are approximately the same dimensionally. If the size is made large, the wood block 1 can be easily placed in the lattice. The protrusions 6b do not need to be provided on the entire circumference of the four wall surfaces within one lattice frame, but are provided on at least two wall surfaces that are perpendicular to each other in the vertical and horizontal directions. This is because the wood block 1 can be positioned when set in the lattice frame.

  And it fixes from upper and lower sides, and right and left with the fixing screw 7 shown in FIG. In this way, the mounting operation becomes much easier than the operation of fixing the wood block 1 in the lattice with a fixing screw 7 while maintaining a slight gap without the projection 6b. It can be constructed with reduced time.

  On the other hand, the side wall of the wood block 1 is also provided with a concave guide hole (not shown) for screws at a position corresponding to the fixing hole 6a. In this way, the fixing work when tightening the fixing screw 7 is facilitated.

  The procedure of the seismic wall reinforcing method according to the present invention will be described. First, the metal lattice frame 6 is fitted into the frame 5 and fixed. To that end, studs spot-welded to the metal lattice frame 6 side are welded and fixed to a plurality of post-installed anchors protruding from the frame on the frame 5 side.

  Further, a mold is assembled around the frame 5 so as to close a gap (about 1 to 2 mm) between the metal lattice frame 6 and the peripheral wall surface of the frame 5, and the gap is filled with mortar.

  After that, a gap for filling the adhesive 8 is secured in each lattice of the metal lattice frame 6 and the wood block 1 is fitted, and the wood material is fixed with the fixing screws 7 at four places in the vertical and horizontal directions. Block 1 is fixed. Then, the gaps between the lattices and the wood block 1 are filled with the adhesive 8. As shown in FIG. 1, the wooden blocks 1 are arranged in a staggered arrangement as a whole in the frame 5.

  As described above, the wood block 1 can be disposed in the frame 5 because it is not necessary to have a fireproof structure because it only bears an earthquake load and does not always bear a load. The wooden block 1 exhibits a large deformation ability and is less damaged during an earthquake. Moreover, since the weight is lighter than blocks made of steel or concrete, workability is good.

  The seismic wall reinforcing method according to the present invention can be widely applied to existing building frames.

1 wood block, 1a anisotropic wood,
1b anisotropic wood, 1c single block,
1d adhesive block,
2 existing buildings,
3 pillars,
4 Beam,
5 frame,
6 metal lattice frame, 6a fixing hole,
7 Fixing screws,
8 Adhesive.

Claims (7)

Providing a metal lattice frame in a frame surrounded by pillars and beams of an existing building, and disposing a wooden block in the metal lattice frame;
Seismic wall reinforcement construction method characterized by The wooden blocks should be arranged in a staggered arrangement,
The method for reinforcing a seismic wall according to claim 1. A wood block is made by laminating anisotropic wood by alternately changing the fiber direction of anisotropic wood, or a single block of isotropic wood or isotropic wood is laminated via an adhesive layer The adhesive block is made of,
The method for reinforcing a seismic wall according to claim 1 or 2. A metal lattice frame is provided in a frame surrounded by pillars and beams of an existing building, and a wooden block is disposed in the metal lattice frame.
Seismic wall reinforcement structure characterized by. The wooden blocks are arranged in a staggered arrangement,
The seismic wall reinforcing structure according to claim 4. A wood block is a laminate of anisotropic wood with alternating fiber directions of anisotropic wood, or a single block of isotropic wood or isotropic wood laminated with an adhesive layer Being an adhesive block,
The earthquake-resistant wall reinforcing structure according to claim 4 or 5. The grid frame of the metal grid frame body is provided with projections for positioning a wood block on at least two orthogonal wall surfaces of the grid frame,
The earthquake-resistant wall reinforcing structure according to any one of claims 4 to 6.