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《Journal of Wuhan University of Technology》 2010-07
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Dynamic Responses Analysis of Simple Supported Beam Under High Speed Train

HU Xiao-yong1,ZHANG Guang-hui2,XIE Wei-ping2(1.School of Science,Wuhan University of Technology,Wuhan 430070,China;2.School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China)  
The special passenger railway from Wuhan to Guangzhou is the longest special passenger railway in China,and also with the features of the highest technical standards and the largest investment scales.The station adopts the structural form of combination of bridge and building,which is difficult to analyze its dynamic behavior and structural stability.Numerical calculation model for moving loads and bridge is established by the software ANSYS based on the basic theory of dynamic response of simple supported beam under moving loads,in which the high-speed train is modeled by a series of moving loads.The frequency and deformation and acceleration of bridge are calculated.The time history and Fourier spectrum of reaction forces at the bearing are obtained.Then,the influence of elastic property of rubber block in basin rubber support to the dynamic response of bridge is analyzed.It is shown from calculation results that resonance will not be occurred and the technical indexes such as frequency and deformation and acceleration of the bridge all satisfy the relevant regulations,which indicates that the dynamic design of the bridge is rational.
【Fund】: 教育部2008年博士点基金(200804970007);; 铁道部2007年重大科技攻关项目(A类);; 2008年湖北省建设科技计划项目(K200716)
【CateGory Index】: U441.3
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