Semi-active seismic response control of base-isolated building with MR damper

Satsuya Soda; Haruhide Kusumoto; Ryosuke Chatani; Norio Iwata; Hideo Fujitani; Yoichi Shiozaki; Takeshi Hiwatashi

doi:10.1117/12.483983

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31 July 2003 Semi-active seismic response control of base-isolated building with MR damper

Satsuya Soda, Haruhide Kusumoto, Ryosuke Chatani, Norio Iwata, Hideo Fujitani, Yoichi Shiozaki, Takeshi Hiwatashi

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Proceedings Volume 5052, Smart Structures and Materials 2003: Damping and Isolation; (2003) https://doi.org/10.1117/12.483983
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

This study deals with a shake table test on a three-story base-isolated steel frame. The frame rests on four roller bearings for isolation and is equipped with four laminated rubbers as shear spring. An MR damper is used in the test to perform semi-active seismic response control. The basic control algorithm applied in the study is to simulate the load-deflection of an origin-restoring friction damper (ORFD) which is a sort of friction damper that looses its resistance when it moves toward the origin, making sure for the base-isolated system to minimize residual displacement even after an extremely strong ground motion. Also attempted is a hybrid type control that superposes viscous damping on the ORFD when the damper moves from the peak displacement toward the origin.

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Satsuya Soda, Haruhide Kusumoto, Ryosuke Chatani, Norio Iwata, Hideo Fujitani, Yoichi Shiozaki, and Takeshi Hiwatashi "Semi-active seismic response control of base-isolated building with MR damper", Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); https://doi.org/10.1117/12.483983

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