PERFORMANCE OF A NEW HIGHWAY BRIDGE UNDER NEAR-FAULT GROUND MOTIONS

摘要：

Bridges with elastomeric pad bearings are commonly adopted for highway continuous bridge design after the Wenchuan earthquake. Based on the design drawings of a new and typical highway bridge,a FEM model is developed considering the soil-structure interaction and the nonlinear constitutive model for piers,piles and bearings. Nonlinear dynamic analysis is conducted for a series of selected near-fault ground motions with emphasis on the performance of the bridge under rare earthquake level. Seismic demand on critical bridge components and systems are evaluated according to Chinese Guidelines for Seismic Design of Highway bridges. Results reveal that bearings are the most vulnerable components of the bridge against seismic loadings. The shear capacity of piers is discussed by comparing the Chinese Guidelines with Caltrans SDC. Finally,some seismic countermeasures are proposed.

作者: Lin Liu Huayu An Yingyong Li

作者单位: School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,P.R.China Highway Bureau of Transportation Office,Jinan 250002,P.R.China

会议类型: 国际会议

会议名称: The International Symposium on Innovation & Sustainability of Structures in Civil Engineering(2011年土木工程结构创新与可持续发展国际会议)

会议地点: 厦门

会议语种:英文

页码: 918-923

在线出版日期: 2011-10-28（万方平台首次上网日期，不代表论文的发表时间）