JPH069258Y2 - Seismic Isolator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a seismic isolation isolator in a structure.

(Prior Art) A conventional seismic isolation isolator is made of an elastic material such as laminated rubber and is configured to exert a seismic isolation effect during an earthquake.

(Problems to be solved by the device) However, the conventional seismic isolation isolators have lower tensile strength than compressive strength, and the tensile force generated by vertical vibration and rocking vibration of the structure reduces the weight of the structure. If it exceeds the maximum value, excessive tensile stress will be generated in the seismic isolation isolator, which will crack the seismic isolation isolator and limit its use. If an excessive horizontal deformation occurs during an earthquake,
This deformation cannot be suppressed.

(Means for Solving Problems) The present invention has been proposed in order to solve such problems, and the upper and lower end surfaces of the isolator body made of laminated rubber are sandwiched by anchor fixing plates and The present invention relates to a seismic isolation isolator, characterized in that an anchor material composed of a wire material having high tensile strength is connected between upper and lower anchor fixing plates in a pre-slackened state.

(Operation) As described above, the seismic isolation isolator according to the present invention is made up of a wire having a high tensile strength, which is connected between the upper and lower fixing plates that sandwich the upper and lower end surfaces of the isolator body made of laminated rubber. Due to the slack, a large horizontal deformation occurs in the seismic isolation isolator at the time of an earthquake, and when the horizontal deformation reaches a predetermined degree, the anchor material of the wire rod is tensioned diagonally between the upper and lower fixing plates for the first time, Tensile resistance occurs in both the horizontal and vertical directions.

Thus, the vertical tensile resistance of the anchor material has a tensile reinforcing effect on the seismic isolation isolator, and the horizontal tensile resistance has a stopper effect against an excessive horizontal displacement of the vibration isolator.

(Embodiment) The present invention will be described below with reference to the illustrated embodiment.

In FIG. 1, (1) is an isolator main body made of laminated rubber, (2) and (3) are anchor fixing plates layered on the upper and lower end surfaces of the isolator main body (1). )
(3) Between, piano wire, carbon fiber material, polymer fiber material,
An anchor material (4) made of a linear material having a high tensile strength such as a reinforced nylon material is connected in a pre-slackened state.

In the figure, (5) is a fixing portion of the anchor material (4).

Since the illustrated embodiment is constructed as described above, a large horizontal deformation occurs at the time of an earthquake, and the anchor material (4) is moved up and down as shown in FIG. 2 only when a predetermined horizontal deformation degree is reached. Tensile force is applied between the anchor fixing plates (2) and (3) in an oblique direction, and as a result, a tensile resistance force is generated in the anchor material (4) in both horizontal and vertical directions.

The vertical tensile resistance exerts a tensile reinforcement effect on the seismic isolation isolator, and the horizontal tensile resistance exerts a stopper effect against an excessive horizontal displacement of the isolator body (1), thus the seismic isolation isolator It should be able to follow the required horizontal deformation.

FIG. 3 shows another embodiment of the present invention in which the tensile reinforcing anchor material (4) is connected between the upper and lower anchor fixing plates (2) and (3) outside the seismic isolation isolator body (1). .

FIG. 4 shows still another embodiment of the present invention, in which tension reinforcement anchor members (4) are provided inside and outside the isolator body (1) between the upper and lower anchor fixing plates (2) and (3). It is connected.

(Effect of the Invention) As described above, the seismic isolation isolator according to the present invention has a tensile strength that is preliminarily slackly connected between the upper and lower fixing plates that sandwich the upper and lower end surfaces of the isolator body made of laminated rubber. By the anchor material composed of high wire rod,
It is possible to allow a predetermined horizontal deformation, and when the predetermined deformation is exceeded, a tensile reinforcing effect of the isolator body and a stopper effect against horizontal displacement are exhibited.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of a vibration isolator according to the present invention, FIG. 2 is an explanatory view showing a state after horizontal displacement thereof, and FIGS. 3 and 4 are other views of the present invention, respectively. Front sectional views showing respective examples, FIG. 5 is a view taken along the line V-V in FIG. 1, FIG. 6 is a view taken along the line VI-VI in FIG. 2, and FIG. 7 is a view taken along the line VII in FIG. -VII
It is a figure. (1)… isolator body, (2) (3)… anchor fixing plate, (4)
… Tensile reinforcement anchor material

Claims (1)

[Scope of utility model registration request] 1. A state in which upper and lower end surfaces of an isolator main body made of laminated rubber are sandwiched by anchor fixing plates, and an anchor member made of a wire having high tensile strength is pre-slackened between the upper and lower anchor fixing plates. Seismic isolation isolators characterized by being connected by.