Study on Seismic Response of Zhengzhou Yellow River Highway-railway Bridge

摘要：

On the basis of detailed 3D model and free vibration analysis of Zhengzhou yellow river highway-railway plate truss composite cable-stayed bridge, the paper compares seismic time-history response under uniform excitation with considering traveling wave effect no-uniform excitation. Analytical result shows that transverse stiffness is weaker than vertical stiffness and the first mode of vibration is transverse bend vibration. Error effect of initial tension doesnt exceed 4％ through analysis of the cable initial tension effect to free vibration. Because of its strong integral stiffness, this structure with single cable plane and short-pylon plate truss is close to continuous steel truss beam. Traveling wave effect is distinct to seismic response. When seismic wave acceleration is not more than 0.15g, the bridge structure is secure.

关键词： Cable-stayed bridge with single cable plane Plate truss composite structure Free vibration Seismic response

作者: Jie Li Na Li

作者单位: School of Civil Engineering, Zhengzhou University, Zhengzhou,China School of Civil Engineering, Zhengzhou University, Zhengzhou, China

会议类型: 国际会议

会议名称: The First Anniversary of Wenchuan Earthquake(纪念汶川地震一周年国际学术会议)

会议地点: 成都

会议语种:英文

页码: 460-463

在线出版日期: 2009-05-10（万方平台首次上网日期，不代表论文的发表时间）