Influence of Rigid Central Buckles on Dynamic Characteristics of a Super-long-span Triple-tower Suspension Bridge
The Taizhou Yangtze River Highway Bridge is the first triple-tower suspension bridge of the world with twokilometric spans.A three-dimensional finite element model is established for the Taizhou Yangtze River Highway Bridge based on a finite element software ANSYS, SUBSPACE characteristic value solution method is adopted to analyze the dynamic characteristics of the bridge, and the influence of setting central buckles at the midspan of the main spans on the dynamic characteristics of a triple-tower suspension bridge.The calcu lation results show that setting central buckles has great influence on the first vertical bending mode and has tremendous influence on some other vertical bending modes.Moreover, central buckles postpone the appear ance of the first torsional mode as well as modes mainly consist of main cables vibration.Setting central buckles increases frequencies of lateral bending modes, and it has greater influence on those modes with an antisymmetric shape in each single span than those with a symmetric shape in each single span.Research re sults can provide a necessary information and research foundation for wind-resistant and anti-seismic research of the bridge.
Huaiyu Cheng Hao Wang Keguan Zou Tianyou Tao Tong Guo Aiqun Li
Key Laboratory of C& PC Structure of Ministry of Education, Southeast University, Nanjing, China Dept.of Civil and Environmental Engineering, Rice Univ, Houston, USA
国际会议
哈尔滨
英文
421-429
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）