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ZHU Dong-sheng, LAO Yuan-chang, SHEN Da-yuan, LI Qiao. THE SEISMIC RESPONSE FEATURES OF ISOLATED BRIDGE WITH LBR[J]. Engineering Mechanics, 2001, 18(1): 119-125.
Citation: ZHU Dong-sheng, LAO Yuan-chang, SHEN Da-yuan, LI Qiao. THE SEISMIC RESPONSE FEATURES OF ISOLATED BRIDGE WITH LBR[J]. Engineering Mechanics, 2001, 18(1): 119-125.
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THE SEISMIC RESPONSE FEATURES OF ISOLATED BRIDGE WITH LBR

  • Lanzhou Railway Institute, Lanzhou 730070;2. Southwest Jiaotong University, Chengdu 610031

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  • Received Date: July 09, 1999
  • Revised Date: March 25, 2000
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  • In this paper, nonlinear time history analysis of isolated bridges is conducted with the use of large numbers of seismic waves which have same response spectrum and similar envelop in time-domain. It is found that the responses of isolated bridges with lead-rubber bearings differ from each other to a large extent. The maximum response is sensitive to the total process of seismic ground motion. The lead-rubber bearings are a very efficient energy dissipation system. The initial yielding force of lead-rubber bearings has an important influence on isolation effectiveness.
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