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Proceedings Paper

Semi-active seismic response control of base-isolated building with MR damper
Author(s): Satsuya Soda; Haruhide Kusumoto; Ryosuke Chatani; Norio Iwata; Hideo Fujitani; Yoichi Shiozaki; Takeshi Hiwatashi
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Paper 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.

Paper Details

Date Published: 31 July 2003
PDF: 8 pages
Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); doi: 10.1117/12.483983
Show Author Affiliations
Satsuya Soda, Waseda Univ. (Japan)
Haruhide Kusumoto, Waseda Univ. (Japan)
Ryosuke Chatani, Waseda Univ. (Japan)
Norio Iwata, Kinki Univ. (Japan)
Hideo Fujitani, Building Research Institute (Japan)
Yoichi Shiozaki, Nishimatsu Construction Co. (Japan)
Takeshi Hiwatashi, TOA Corp. (Japan)


Published in SPIE Proceedings Vol. 5052:
Smart Structures and Materials 2003: Damping and Isolation
Gregory S. Agnes; Kon-Well Wang, Editor(s)

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