SEISMIC ANALYSIS OF A LONG-SPAN CONTINUOUS STEEL TRUSS-ARCH BRIDGE OF HIGH-SPEED RAILWAY ACROSS THE YANGTZE RIVER
In this paper, an FEM model is established for the main span of the bridge, with the main box arch and suspender members modelled by beam elements, truss members by truss elements, and the orthotropic steel deck by plate elements. The natural frequencies and mode shapes are acquired by the eigen-parameter analysis. By inputting the Tianjin earthquake acceleration record to the bridge system, the dynamic responses of the bridge, including the displacement and accelerations of the main joints of the structure, and the seismic forces and stresses of the key members, are calculated by the structural analysis program, based on which the main laws of the seismic responses of the bridge are summarized, and the safety of the structure is evaluated.
Chao-Yi Xia Nan Zhang Tie-Yi Zhong
School of Civil Engineering & Architecture, Beijing Jiaotong University,Beijing 100044, P.R. China School of Civil Engineering & Architecture, Beijing Jiaotong University, Beijing 100044, P.R. China
国际会议
长沙
英文
291-296
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）