Title:
BASE ISOLATION MECHANISM AND BASE ISOLATION STRUCTURE
Document Type and Number:
Japanese Patent JP2022177639
Kind Code:
A
Abstract:
To provide a passive type base isolation mechanism that is inexpensive, prevents the swinging of a base isolation structure due to directional external force such as wind power, and has desired base isolation performance without requiring maintenance, and a base isolation structure equipped with the base isolation mechanism.SOLUTION: A base isolation mechanism 11 includes: a base isolation device 5 that is provided on a base isolation layer 4 formed between an upper structure 2 and a foundation structure 3 located under the upper structure 2, normally supports the upper structure 2, and raises the upper structure 2 when displacement increases following displacement in a horizontal direction of the upper structure 2; and a friction bearing 6 that normally supports the upper structure 2 and separates from a lower part of the upper structure 2 when the upper structure 2 displaces in the horizontal direction. The base isolation device 5 and the friction bearing 6 are disposed in parallel in the base isolation layer 4. A height of the friction bearing 6 when supporting the upper structure 2 and a height thereof after separating from the upper structure 2 generally match. A base isolation structure 1 comprises the base isolation mechanism 11.SELECTED DRAWING: Figure 1
Inventors:
ISODA KAZUHIKO
Application Number:
JP2021084046A
Publication Date:
December 01, 2022
Filing Date:
May 18, 2021
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
F16F15/04; E04H9/02; F16F15/06
Attorney, Agent or Firm:
Yasushi Matsunuma
Kenichi Kawabuchi
Kazuzumi Nishizawa
Kenichi Kawabuchi
Kazuzumi Nishizawa