Seismic Control Research of Longitudinal Floating Bridge Based on MR Damper

Abstract:

In order to reduce the longitudinal displacement of longitudinal floating bridge subject to earthquake excitation, seismic response reduction control strategy for longitudinal floating bridge with MR damper is developed based on the MATLAB software for numerical simulation and the vibration control algorithm of classical linear quadratic of full-state feedback. In this paper, the seismic response reduction analysis for a longitudinal floating bridge, Pingsheng Bridge which is a self-anchored suspension bridge with a single tower, is completed, and also the optimal active control force is obtained. Furthermore, the effect of time delay on seismic control is investigated. The results show that the longitudinal displacement of longitudinal floating bridge can be effectively reduced by vibration control system with MR damper, and the time delay has little influence on seismic response reduction of longitudinal floating bridge.

• Periodical: Applied Mechanics and Materials (Volumes 117-119)
• Pages: 201-205
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.117-119.201
• Online since: October 2011
• Authors: Meng Gang Yang, Kui Ouyang
• Keywords: Longitudinal Floating Bridge, MR Damper, Seismic Control, Time Delay

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