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Indexed by:会议论文

Date of Publication:2010-01-01

Included Journals:CPCI-S

Page Number:113-117

Abstract:The bearings are generally designed into two types: fixed and movable. The pier using fixed bearing bears most of seismic force caused by longitudinal earthquake. Only when the displacement of girder exceeds the gaps of the movable bearings, can the piers using movable bearings bear longitudinal seismic force besides the friction force. Using nonlinear time-history analysis method, considering the pounding of bearings and elastic-plastic nonlinearity, the seismic performance of continuous girder bridge under rear earthquake are studied. The influences of pounding stiffness, magnitude of gap, deformation of girder and intensity of earthquake on seismic responses are analyzed in detail. Based on the results of the study, the advices of reasonable gap and stiffness to reduce the seismic responses are given.