Title:
JACK STRUCTURE USED TO EXCHANGE SEISMIC ISOLATOR
Document Type and Number:
Japanese Patent JP2022124178
Kind Code:
A
Abstract:
To provide a jack structure used to exchange a seismic isolator, the jack structure capable of swiftly transferring a superstructure lifted by a jack into the state of being supported by the seismic isolator when an earthquake of a prescribed scale or larger occurs.SOLUTION: A jack structure 1 comprises a jack body 9 to lift a superstructure 3 and a breakable member 11 arranged between the jack body 9 and the superstructure 3. The breakable member 11 breaks when an earthquake of a prescribed scale or larger occurs. The breakable member 11 comprises an annular frame body, a cylindrical sand layer arranged inside of the frame body and a plurality of granules such as steel balls packed in the sand layer. The lateral part of the frame body is opened when the earthquake of the prescribed scale occurs.SELECTED DRAWING: Figure 1
Inventors:
KAWAI KEITA
HARADA HIROYUKI
SUZUKI TORU
ODA MINORU
TAKAHASHI ERI
HARADA HIROYUKI
SUZUKI TORU
ODA MINORU
TAKAHASHI ERI
Application Number:
JP2021021790A
Publication Date:
August 25, 2022
Filing Date:
February 15, 2021
Export Citation:
Assignee:
SUMITOMO MITSUI CONSTRUCTION CO LTD
International Classes:
E04H9/02; B66F3/36; E04G23/02
Attorney, Agent or Firm:
Patent Business Corporation Oshima Patent Office