CENTRIFUGE MODEL TESTS ON SEISMIC BEHAVIOR OF SLIDING BASE ISOLATION SYSTEM BY LEVERAGING BUOYANCY FOR SPREAD FOUNDATION STRUCTURE

DOI Web Site Web Site 1 References
  • NIGORIKAWA Naohiro
    Institute of Technology, Geotechnical & Foundation Engineering Group, Shimizu Corporation
  • ASAKA Yoshiharu
    Institute of Technology, Geotechnical & Foundation Engineering Group, Shimizu Corporation
  • HASEBE Masanobu
    Institute of Technology, Tsunami and Meteorological Engineering Group, Shimizu Corporation

Bibliographic Information

Other Title
  • 浮力を利用した直接基礎形式のすべり免震構造に関する遠心模型振動実験
  • フリョク オ リヨウ シタ チョクセツ キソ ケイシキ ノ スベリメンシンコウゾウ ニ カンスル エンシン モケイ シンドウ ジッケン

Search this article

Abstract

A simple seismic isolation system by leveraging buoyancy has been devised for spread foundation structures. Through dynamic centrifuge tests, it is shown experimentally that a sliding isolation effect arises during seismic loading if a buoyant force of appropriate magnitude is applied to the base of the foundation. It is confirmed that seismic isolation performance tends to improve as the buoyancy-to-weight ratio increases. Performance when the buoyancy-to-weight ratio is 90% or more is particularly good, and the maximum response acceleration of a structure can be reduced to below 100 cm/s2 against a sinusoidal wave with a maximum acceleration of 500 cm/s2.

Journal

References(1)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top