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, the causations of seismic failure are concluded. Huilan flyover is located at Huilan Avenue in Mianzhu city and crosses several railway tracks. Four circular concrete ramps flank on both ends of main flyover structures. During the devastating Wenchuan earthquake, significant plastic failure occurred. After the earthquake, qualitative analysis is given by many researchers based on field reconnaissance (Liu 2009, Sun 2009). The radii of these curved ramps are uniformly small, which are quite vulnerable in earthquake, so it seems that more researches about curved bridge with small radius are necessary for design work in the future. Qualitative and quantitative analysis subject to those curved ramps are carried out in this article; finally, the causations of seismic failure are concluded.
Seismic Failure Analysis of Huilan Flyover in Wenchuan Earthquake
Ninth Asia Pacific Transportation Development Conference ; 2012 ; Chongqing, China
Sustainable Transportation Systems ; 481-490
2012-06-28
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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