High Pier And Multi-Spans Prestressed Concrete Continuous Beam Bridge Seismic Response Analysis About High-Speed Passenger-Only Guided Transport System

On the basic of research achievements inside and outside of China,using large-scale space finite element program MIDAS,this thesis carries on seismic response analysis of ZhuGenhe River Bridge by the response spectrum and time-history methods,then the seismic response law of the bride is gained.ZhuGenhe River Bridge is a prestressed concrete continuous beam bride along with high pier and multi-spans.The total length of girder is 441.2 m,and the main span is composed of 40.6m+5~*72 m+40.6m.The heights of the twelfth and thirteenth pier are both 69.5m.The bridge is located in the field of 7 degree earthquake intensity..After reviewing the basic dynamic theory about bridge structural analysis,the model for dynamic calculation is established by using MIDAS Program,then the model analysis is made to obtain the dynamic characteristic.Adopting the normal seismic response spectrum which is stated by railway criterion simultaneously by considering the vertical seismic response,four kinds of load is used for seismic input mode, and the reaction rules of prestressed concrete continuous beam bride along with high pier and multi-spans is obtained.After adopting hysteresis system simulating the resilience characteristics of active rubber bearing,the method of nonlinear time -history analysis is applied to ZhuGenhe River Bridge,analyzing the influence of the seismic response of the bridge by the El Centro wave which is adjusted.Some valuable conclusions are obtained based on the preview work from seismic response spectrum to time-history analysis.