Semi-active control of seismic-excited nonlinear isolated bridges

T. Y. Lee, K. Kawashima

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The effectiveness of a semi-active control method using magnetorheological (MR) dampers on reducing the deck displacement of the isolated bridges, which exhibit nonlinear responses at both the columns and isolators under near-field ground motions, is studied. The sliding mode control algorithm is utilized to command the MR dampers. A five-span viaduct with high-damping-rubber bearings is analyzed to evaluate the control performance. The results show that the semiactive control using MR dampers is capable of providing the similar performance by the active control. The semi-active control based on the sliding mode control algorithm achieves outstanding control performance through comparison with the semi-active control based on the LQR control algorithm.

Original languageEnglish
Title of host publication8th US National Conference on Earthquake Engineering 2006
Pages7344-7352
Number of pages9
StatePublished - 2006
Event8th US National Conference on Earthquake Engineering 2006 - San Francisco, CA, United States
Duration: 18 Apr 200622 Apr 2006

Publication series

Name8th US National Conference on Earthquake Engineering 2006
Volume12

Conference

Conference8th US National Conference on Earthquake Engineering 2006
Country/TerritoryUnited States
CitySan Francisco, CA
Period18/04/0622/04/06

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