Displacement response control of seismic-excited nonlinear isolated bridges

T. Y. Lee, K. Kawashima

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

The effectiveness of seismic displacement response control for isolated bridges, which exhibit nonlinearity at both the columns and the isolators, is studied using the LQR optimal active control. A typical viaduct is analyzed for evaluation. A parametric study of weighting matrices is carried out to examine the effect on reducing the deck displacement response. The results indicate that the LQR active control is effective in reducing the deck displacement at small control force levels. However, the larger control force is not beneficial to reduce the deck displacement because it causes large column post-yielding displacement. The effectiveness of saturation of control force is thus investigated for preventing excessive control at large control force levels. Finally, the active control is compared with the passive control using viscous dampers.

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主出版物標題8th US National Conference on Earthquake Engineering 2006
頁面5121-5130
頁數10
出版狀態已出版 - 2006
事件8th US National Conference on Earthquake Engineering 2006 - San Francisco, CA, United States
持續時間: 18 4月 200622 4月 2006

出版系列

名字8th US National Conference on Earthquake Engineering 2006
9

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???event.eventtypes.event.conference???8th US National Conference on Earthquake Engineering 2006
國家/地區United States
城市San Francisco, CA
期間18/04/0622/04/06

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