Research on dynamic characteristics model test scheme for middle pylon of multi-pylon multi-span suspension bridges  

作　　者：Zhang Yufeng Zhang Dachang 

机构地区：[1]Jiangsu Transportation Research Institute Co. , Ltd. , Nanjing 211112, China [2]Highway Bridge Engineering and Technology Research Center of Jiangsu Province, Nanjing 211112, China [3]Key Laboratory in Communications Industry for Health Testing and Diagnosis of Long and Large Bridges, Nanjing 211112, China [4]Nanjing University of Technologies, Nanjing 210018, China

出　　处：《Engineering Sciences》2012年第3期64-71,共8页中国工程科学（英文版）

摘　　要：Multi-pylon multi-span suspension bridge is a new type super flexible structure system, and the rigidity design of middle pylon is one of the main difficult technical issues. Due to the requirements of longitudinal rigidity, the structural form and the corresponding foundation type of middle pylon are different from those of the ordinary steel pylon, and the complicated dynamic characteristics make the calculation quite difficult. In this article, exploration has been made in selection of similarity ratio and model materials, section simulation, restriction conditions simulation, fixing of mass blocks, fabrication scheme and testing method by taking into account different construction and working conditions such as restriction conditions and working environment of a three-pylon suspension bridge, to conduct the test experimental design of the dynamic behavior of the middle pylon, with the purpose to reveal its dynamic characteristics and make comparison and analysis with theoretical assumptions, to provide basis for anti-wind and anti-seismic design and reference for the design and research of three-pylon two-span suspension bridges in the future.

关 键 词：multi-pylon multi-span suspension bridge middle pylon dynamic characteristics model test 

分 类 号：TU311.3[建筑科学—结构工程] U448.25[建筑科学—桥梁与隧道工程]