Seismic responses analysis of long continuous rigid-framed bridge subjected to multi-support excitations
In this paper, effects of multi-support excitations on seismic responses of an existing long span prestressed concrete continuous rigid-framed bridge are investigated by time-history method. This bridge is named Houzhu Bridge, in Quanzhou, Fujian province. There is no material difference between the result of the 3-D finite element model modal analysis and modal test that confirms the 3-D finite element model reasonable. The ground motions come from relatively non-stationary earthquake accelerograms simulation with EI-centro wave. Wave passage effect, incoherence effect and local effect is consider in the numerical simulation. The contrast of results multi-support excitations and uniform excitation is that the wave passage effect is very important for the continuous rigid frame bridges, the other effect is not very important. A conclusion is given that the uniform seismic excitation is not able to control the seismic design for long span prestressed concrete continuous rigid-framed bridge, and the influence of the multi-support excitations on the seismic responses of the long span prestressed concrete continuous rigid-framed bridge must be considered.
continuous rigid-framed bridge multi-support excitations seismic response analysis
Jitao Li Qingshan Yang
Postgraduate, School of Civil Engineering, Beijing Jiaotong University, Beijing. China Professor, School of Civil Engineering, Beijing Jiaotong University, Beijing. China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）