Seismic isolation sliding bearing for structure
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United States of America Patent
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-
Feb 9, 1999
Grant Date -
N/A
app pub date -
May 29, 1997
filing date -
Jun 14, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A seismic isolation sliding bearing for a structure, is made up of a dish 1 having a conical concave surface having a predetermined inclination or a spherical concave surface in its central portion, and a bearing element 2 in which the bearing element includes a base 3 whose portion for contact with the concave surface of the dish 1 is formed by a low-friction material, and a holder 6 which holds the base 3 so as to press it against the concave surface of the dish 1. The seismic isolation sliding bearing of the present invention neither resonates to the vibration period of any earthquake nor causes a large oscillation during a normal small vibration, but has a restoring force because of its structure which enables the bearing element to readily return to its original position after an earthquake ceases.
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