JPH062451A - Disaster prevention structure of base isolation device - Google Patents

Abstract

PURPOSE:To enhance the fireproofness and fire resistance as well as ensure the disaster preventive safety by fixing fire-resistant covering material to the periphery of a base isolation device made from laminate rubber, arranging a fire-resistant panel around the covering material, and installing additionally an extinguishing facility and a pedestal for supporting. CONSTITUTION:A base isolation device A made from laminate rubber is installed between the top of each column 1 and a beam 2, and at the periphery of this part, a fire-resistant covering material 3 is installed which is formed from ceramic fiber in cloth form. At the side face of the top of the column 1, a fire-resistant panel 4 having fire-resisting property of approx. 30min is aslant arranged around the covering material 3. In the neighborhood of this base isolation device A, a pillar-shaped pedestal 5 is installed between an upper and a lower beam along the column 1 so that the pedestal can support the building concerned at the time of laminate rubber replacement for repairing or its having burnt. Further an extinguishing facility 6 is additionally fixed to the laminate rubber so as to reduce hazard at the early stage of a fire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation device, and more particularly to a disaster prevention structure for a seismic isolation device using laminated rubber.

[0002]

When a seismic isolation device such as laminated rubber is installed on a pillar portion which is a main structural portion such as a pillar beam and a column base on a general floor of a building, it does not conform to a fire resistant building specified by the Building Standards Act. .. Therefore, the applicant has previously developed various inventions in which the seismic isolation device has a fireproof coating structure. For example, one example thereof is JP-A-3-87443. The present invention is developed to improve the performance of the invention, to temporarily support the seismic isolation device even when the seismic isolation device fails, and to facilitate the repair and replacement of the seismic isolation device.

[0003]

According to the present invention, when a seismic isolation device is surrounded by a fireproof covering material, a fireproof panel is arranged around the seismic isolation device, and the seismic isolation device does not function near the seismic isolation device, the seismic isolation device is used. This is a disaster-prevention structure for a seismic isolation device, in which a support pedestal that supports the load acting on the seismic isolation device is provided, and fire extinguishing equipment is provided around the seismic isolation device.

[0004]

EXAMPLE A seismic isolation device A made of laminated rubber is interposed between the top of a column 1 and a beam 2, and a fireproof covering material 3 made of cloth-like ceramic fiber is attached to the periphery thereof.
Further, on the top side surface of the pillar 1, a fireproof panel 4 having a fireproof performance of about 30 minutes in an oblique direction is arranged on the outer periphery of the fireproof covering material.

A column-shaped support pedestal 5 is arranged between the upper and lower beams in the vicinity of the seismic isolation device A along the column 1 so as to support the building so that it will not fall over even if the laminated rubber should burn out and fail to function.

Further, the load of the building can be supported even when the laminated rubber is replaced and repaired.

Further, a fire extinguisher 6 such as a foam fire extinguisher is attached to the laminated rubber to reduce the risk of the initial fire.

[0008]

According to the present invention, in addition to the fireproof coating of the seismic isolation device, a fireproof panel is arranged on the outer periphery of the seismic isolation device, and fire extinguishing equipment is additionally provided to further improve fire and fire resistance, and the support base is By installing it, safety can be further improved in terms of disaster prevention.

[Brief description of drawings]

FIG. 1 is a sectional view showing an outline of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the outline of an embodiment of the present invention.

FIG. 3 is a detailed cross-sectional view of a main part.

[Explanation of symbols]

A: seismic isolation device, 1 ... pillar, 2 ... beam, 3 ... fireproof coating, 4 ...
Fireproof panel, 5 ... Support pedestal, 6 ... Fire extinguishing equipment.

Claims (2)

[Claims] 1. A seismic isolation device is surrounded by a fireproof covering material, a fireproof panel is arranged around the seismic isolation device, and a load acting on the seismic isolation device is provided when the seismic isolation device does not function near the seismic isolation device. A disaster-prevention structure for seismic isolation devices, which is provided with a support pedestal that supports the seismic isolation device. 2. The disaster prevention structure for a seismic isolation device according to claim 1, wherein a fire extinguishing facility is provided around the seismic isolation device.