JP3233158U - Seismic control springs for wooden buildings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismic control spring which is less likely to deteriorate in seismic control performance due to a change in temperature or deterioration over time and is easy to manufacture and install on a building. A vibration control spring 1 is a component obtained by bending a rod-shaped metal steel material to have a spring function, and is constructed by a plate 3 attached to a pillar 6 and a plate 2 attached to a beam 5. The concern that the elastic body such as rubber used in the seismic control device deteriorates in seismic control performance due to changes in temperature and deterioration over time can be solved by using the metal seismic control spring 1. In addition, because of its simple structure, it is naturally easy to manufacture vibration control equipment and install it on buildings. [Selection diagram] Fig. 2

Description

The present invention is a device that reinforces the joint between columns and beams of a building (hereinafter referred to as a joint), and is related to a vibration control device that aims to suppress the shaking of the building due to an earthquake or strong wind and prevent the building from collapsing. Is.

I think that it is an easy and effective way to reinforce the joints with seismic control equipment in order to improve the seismic control of the building.
Some conventional vibration control devices have an elastic body such as rubber sandwiched between metal plates to give the device a slight elasticity as in the present invention. (Patent Document 1)
As in Patent Document 1, a structure that has both elasticity and reinforcement functions is effective for preventing the destruction of the seismic control device itself and the attachment part of the seismic control device due to the shaking of the building, and eventually for improving the seismic control property of the building. I believe that.

However, in the structure of Patent Document 1, an elastic body is used between the metal plates.
There is a concern that the vibration damping performance of this elastic body may deteriorate due to changes in viscosity due to changes in temperature, deterioration of the elastic body itself due to aging, and deterioration of the adhesive that binds the elastic body to the metal plate. For this reason, it is desirable that the vibration control device is made of a material that does not deteriorate over time or temperature.

Patent Document 2 is an invention in which a metal spring is used as a main component for suppressing a change in the angle of a joint of a building.
Since Patent Document 2 is a metal spring, there is no concern about deterioration over time, but since it is a specification for making diagonal holes in columns and beams, it is not easy to construct even a new building, and it is already existing. I think that it is not suitable for construction on buildings.
Further, since the shape of the spring is linear, it is considered that the spring is unlikely to bend when the angle of the joint changes, and there is a possibility that the sufficient vibration control function cannot be exhibited.

Japanese Patent Application Laid-Open No. 2003-194143 Actual climb 3211422

The problem to be solved is to provide a seismic control device that is easy to manufacture and construct because the seismic control performance is unlikely to deteriorate due to changes in temperature and deterioration over time.

The present invention is solved by using a component (hereinafter referred to as a vibration damping spring) in which a rod-shaped metal steel material is bent to have a spring function instead of an elastic body such as rubber.

Using the repulsive force of this seismic control spring, the seismic control performance of the building is achieved by allowing small angle changes in the joint caused by an earthquake or strong wind to release the stress of shaking while resisting large angle changes. It is intended to increase.

In addition, even if the building shakes beyond the combined strength of the building and the damping device and the building is inevitably collapsed, the damping spring will not break and will be deformed to disassemble the joint. It also tries to prevent and prevent the complete collapse of the building.

By using a metal vibration control spring instead of using elastic materials such as rubber for the parts responsible for the elasticity of the vibration control equipment, it is less susceptible to changes in temperature and aging deterioration, and stable vibration control performance is maintained. It is possible to provide vibration control equipment that is easy to manufacture and install.

FIG. 1 shows a coiled vibration damping spring so that the function of the damping device can be easily imagined. FIG. 2 is an implementation view in which the vibration control spring of the present invention is applied to a wooden building by a plate attached to a pillar and a plate attached to a beam. (Example 1) In FIG. 3, one end of the vibration damping spring is processed into a bolt shape, passed through a hole penetrated through the pillar, and fixed with a nut. (Example 2) FIG. 4 shows the damping spring attached so as to be curved inward. (Example 3) FIG. 5 is a diagram showing a state when stress is applied to the vibration control device due to the inclination of the column. The deflection of the damping spring is shown as a shaded area.

When the equipment of the present invention is applied to a wooden building, a plate attached to a pillar and a plate attached to a beam are used as shown in FIG. (Example 1)

As shown in FIG. 3, it is also possible to make a hole in the pillar, pass one end of the bolted vibration damping spring through the hole in the pillar, and fix it with a nut. (Example 2)

FIG. 4 shows the damping springs arranged in an inwardly curved direction. (Example 3)

Example 1 of FIG. 2 is a diagram in which the vibration control device of the present invention is attached to a joint of a wooden building without a clay wall, and the width of a plate attached to a column and a plate attached to a beam is the width of the column or beam. It is drawn in the same way as.
In the case of an existing wooden building with earthen walls and braces, the width of the plate to be attached to the column and the plate to be attached to the beam should be narrower than the width of the column or beam to improve versatility and construction. Can be facilitated.

In the second embodiment of FIG. 3, a plate attached to the pillar is not used, and a vibration damping spring having one end processed into a bolt shape is passed through a hole made in the pillar and fixed to the pillar with a nut.

In Example 3 of FIG. 4, the vibration damping spring of the present invention is arranged in an inwardly curved direction.
When the angle of the joint is narrowed due to the shaking of the building, the damping spring may come into contact with the column or beam and the spring function may be impaired.
In order to prevent this, it is desirable to attach the damping spring to a mounting plate having a sufficient thickness (2 mm or more) or to arrange a spacer between the mounting plates.

Regardless of the arrangement of the seismic springs in FIG. 3 in which the seismic spring is curved outward and in FIG. 4 in which the seismic spring is curved inward, the seismic spring bends as shown in the shaded area in FIG. While allowing it, it resists large changes in angle and tries to prevent the collapse of buildings.

It is considered that the vibration control spring of the present invention can be produced at low cost and can be distributed at low cost because of its simple structure.
From this, it is considered that even when the construction is carried out on an existing wooden building, the construction can be carried out at low cost, and the wooden building with improved vibration control property can be popularized.
In addition, the yield strength of the vibration damping spring can be easily changed by changing the thickness and length of the rod-shaped steel material at the manufacturing stage.

1 Seismic control spring 2 Plate to be attached to the beam 3 Plate to be attached to the pillar 4 Spacer 5 Beam 6 Pillar 7 Tilt of the pillar 8 Deflection of the seismic control spring due to the tilt of the pillar (diagonal part)

Claims (1)

Bending rod-shaped steel that is attached to columns and beams directly or through column plates or beam plate fittings to reinforce the joints between columns and beams in buildings. Seismic control spring.

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