Abstract：The devastating Wenchuan earthquake caused substantial flexural failure to Huilan flyover, located in Mianzhu of Sichuan, China. Based on the investigation of bridge damage, three-dimensional mathematical models suitable for eigenvalue analysis and non-linear time-history dynamic analysis are presented. In nonlinear time-history analysis, elasto-plastic mathematical model, effect of pounding and effect of slippage of bearing are studied by sensitivity analysis. Finally, based the conclusion of qualitative and quantitative analysis, the causations of seismic failure are discussed.
2014, Vol. 33 
