Title:
免震装置
Document Type and Number:
Japanese Patent JP7320474
Kind Code:
B2
Abstract:
To provide a seismic isolation device which: exerts a high seismic isolation effect in a case of expected medium-to large-scale earthquake motion; follows large deformation even in a case of unexpectedly huge earthquake motion; and secures safety of a seismic isolation layer.SOLUTION: A seismic isolation device has a circular sliding material installed so as to be slidable with respect to a sliding plate. A sliding face of the sliding plate has: a circular low friction region including a central section on which the sliding material is placed as an initial position; and a high friction region which surrounds the low friction region and has a friction coefficient higher than the low friction region. Given that μL is the friction coefficient of the low friction region, μH is the friction coefficient of the high friction region, μH/μL runs from 2 through 3, and δ is displacement of the sliding material, a variation μ'(δ) of the friction coefficient per unit displacement when the same transferred from the friction coefficient μL of the low friction region to the friction coefficient μH of the high friction region satisfies a relation of 0<μ'(δ)≤0.8μL/π[1/mm].SELECTED DRAWING: Figure 3
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Inventors:
Masayuki Yamanaka
Masaru Emura
Takeshi Sano
Osamu Yoshida
Goro Miwada
Takuya Akiba
Naoki Kato
Shigeo Fukuda
Motoki Misu
Masaru Emura
Takeshi Sano
Osamu Yoshida
Goro Miwada
Takuya Akiba
Naoki Kato
Shigeo Fukuda
Motoki Misu
Application Number:
JP2020058557A
Publication Date:
August 03, 2023
Filing Date:
March 27, 2020
Export Citation:
Assignee:
Obayashi Corporation
SWCC Co., Ltd.
SWCC Co., Ltd.
International Classes:
F16F15/04; E04H9/02; F16F15/02
Domestic Patent References:
| JP2005249103A | ||||
| JP2016196910A | ||||
| JP2007225016A | ||||
| JP2005257001A | ||||
| JP2019082219A | ||||
| JP2011214703A | ||||
| JP2002039266A |
Attorney, Agent or Firm:
Patent Attorney Corporation Washida International Patent Office