JP3607379B2 - Seismic reinforcement structure of building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seismic reinforcement structure for buildings, and more particularly to a seismic reinforcement structure that can be applied to an existing building from the outside.
[0002]
[Prior art]
Conventionally, as a method of seismic reinforcement for existing buildings, (b) steel pipes for (b) structural members such as columns and beams, and (b) methods to increase the strength of the frame by adding seismic elements such as braces and bearing walls. In general, an embodiment in which the strength of a structural member is increased by winding, concrete-strike, or pasting a new material is applied.
[0003]
[Problems to be solved by the invention]
However, in the case of (a), the area around the entrances such as the entrance and the opening window is insufficient in seismic performance, but it is difficult to install seismic elements.
[0004]
In the case of (b), there are few buildings where pillars and beams exist alone, and they are connected to walls and floors, so that it is difficult to reinforce the structural members alone.
[0005]
Furthermore, in both cases (a) and (b), since the construction work is carried out from the inside of the building, there is a problem that the resident's life is disturbed.
[0006]
The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a seismic reinforcement structure for buildings that can be applied to buildings in which it is difficult to add seismic elements or to reinforce structural members alone. It is in.
[0007]
Another object of the present invention is to provide a method for seismic reinforcement of a building that can be constructed from the outside of the building.
[0008]
[Means for Solving the Problems]
The gist of the seismic reinforcement structure of a building according to the present invention is a seismic reinforcement structure that surrounds a gate-shaped frame 2 'that defines a structural surface having insufficient seismic performance in an existing building from the outside. The structure is a lamentar lath structure 10 composed of a columnar member 11 and a beam-shaped member 12, and the beam-shaped member 12 is fastened to the frame 2 'and the columnar member 11 is rigidly connected or pin-bonded to a foundation. Is.
[0009]
That is, the present invention selects a structural surface (a skeleton surface extending over the entire building) that lacks seismic performance (strength and / or toughness) in an existing building, and sets a framework that defines the outer surface of the structural surface to the outside of the building. By surrounding it with a ramen structure, the building surface is made a rigid structure surface and the building is given seismic reinforcement as a whole.
[0010]
Moreover, the object of implementation of the present invention is an existing RC building or S building that requires seismic reinforcement, and specific examples include apartment houses such as apartment buildings, housing complexes, and apartments. For example, it may be a store, a hospital, a school, or the like.
[0011]
Buildings where it is difficult to add braces or bearing walls or to reinforce columns or beams alone are more suitable targets.
[0012]
In the ramen structure of the present invention, the outer surface of the construction surface is generally a gate shape. Therefore, an S structure or an RC structure in which a beam-shaped member is laid between the columnar members and the corners are rigidly connected (the columnar member only is an RC structure) However, it may be of an appropriate shape corresponding to the structural outline other than the gate shape. Note that the columnar member is rigidly connected to the foundation or is pin-supported.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0014]
FIG. 1 is a plan view schematically showing a framework of an apartment house 1 as an existing building, and FIG. 2 shows a front view of the apartment house 1 embodying the present invention.
[0015]
The apartment house 1 is a general RC building with 5 stories, and the crossing direction A is a ramen structure with columns, beams, etc., and the spanning direction B is a multistory earthquake-resistant wall structure. The necessity of seismic reinforcement in the apartment house 1 often occurs in the crossing direction A compared to the spanning direction B.
[0016]
Therefore, in the implementation of the present invention, as the structural surface having insufficient seismic performance, the front structural surface (hereinafter referred to as the front surface 2) in which the openings such as the entrance and the window are arranged among the structural surfaces along the beam running direction A. )) And the last construction surface (hereinafter referred to as rear surface 3) are selected, and a portal frame 2 ′ (shown by hatching) that defines the outline of the front surface 2 and the rear surface 3 is selected. A gate-shaped ramen structure 10 is attached so as to surround the house from the outside of the apartment house 1 (see FIG. 2).
[0017]
Each ramen structure 10 has a beam-like member 12 laid between two columnar members 11 so that the corners thereof are in rigid contact with each other, and is fastened to a frame 2 'with an anchor bolt (not shown). The member 11 is rigidly connected or pinned to the foundation.
[0018]
Further, both the columnar member 11 and the beam-shaped member 12 are provided with a truss structure (only part of which is shown) between the earthquake-resistant frames to increase the strength.
[0019]
By attaching the ramen structure 10 as described above, the seismic performance of the entire apartment house 1 can be remarkably improved.
[0020]
In the present invention, an RC structure (only the columnar member 11 may be an RC structure) other than the S structure ramen structure 10 may be employed.
[0021]
【The invention's effect】
As described above, in the present invention, since it is possible to construct earthquake-proof reinforcement from the outside for an existing building, construction can be performed without hindering the lives of residents. A seismic reinforcement suitable for buildings where it is difficult to reinforce the structural members alone.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing a framework of an apartment house.
FIG. 2 is a front view schematically showing an apartment house embodying the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apartment house 2 Front 2 'Frame 3 Rear surface 11, 13' Plate-shaped part 10 Ramen structure 11 Columnar member 12 Beam-shaped member

Claims (1)

A seismic reinforcement structure surrounding the existing definitive seismic performance to the building of the gate-shaped to define a Plane to lack the framework 2 'from the outside,
The seismic reinforcement structure that surrounds from the outside is a ramental lath structure 10 composed of a columnar member 11 and a beam-shaped member 12. The beam-shaped member 12 is fastened to the frame 2 ', and the columnar member 11 is rigid with respect to the foundation. A seismic reinforcement structure for buildings, characterized by being connected or pin-joined.

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