Abstract：Research purposes ： According to the change of natural frequency of the simply - supported railway bridge before and after strengthening， the resonance speed of train is changed. So it is necessary to analyze the resonance response whether meet the requirements when the bridge is strengthened. In this paper，the resonance mechanism about vehicle - bridge system is introduced， the influence factors of resonance response about vehicle - bridge system are studied，and the dynamic interaction between train and bridge before and after strengthening is analyzed through ANSYS and multi - body dynamics software UM.
Research conclusions ： (1 ) Results of the vehicle - bridge simulation calculation indicate that the resonance speed is changed before and after strengthening of the straight small span bridge. (2) The resonance speed outstrips the normal speed range of high speed train after strengthening of bridge. (3) The vertical amplitude and acceleration of bridge when the train on second resonance speed is much lower than that of the first resonance speed，so it can be ignored. (4) The amplitude and acceleration can be reduced obviously when vertical and transverse bridge resonance occurs according to the strengthening of bridge. (5) The research methods and results can provide references for the resonance control of the simply - supported railway bridges.
周长东1,刘斌2. 简支铁路桥梁加固前后共振响应分析[J]. 铁道工程学报, 2015, 32(9): 60-66.
ZHOU Chang - dong1，LIU Bin2. Research on the Resonance Response of Simply - supported Railway Bridge Before and After Reinforcement. Journal of Railway Engineering Society, 2015, 32(9): 60-66.
Wakui H，Matsumoto N，Tanabe M. A Study on Dynamic Interactions Analysis for Railway Vehicles and Structures - mechanical Model and Practical Analysis
Qin Wenxiao. Study on Influencing Factors and Preventive Measures for Vertical Resonance of High Speed Train - Bridge System [ D ]. Changsha ： Central South University，2012.
Wang Guichun， Pan Jiaying. Analysis of Vehicle - bridge Coupled Vibration due to Track Irregularities [J]. Journal of Railway Engineering Society，2006(8)：
Su Mubiao， Li Jianzhong， Zou Zhenzhu. Analysis of the Factors Influencing Vertical Resonance of Simply Supported Railway Girders[ J]. Engineering Mechanics， 2003(4) ：59-66.
Xia He. Vehicle and Structure Dynamic Interaction [M]. Beijing：Science Press，2002.
TB 10621—2009，Code for Design of High Speed Railway(Trial) [ S].
Xia He，Guo Weiwei，Zhang Nan. Analysis of Resonance Mechanism and Conditions of Train - Bridge System [J]. Journal of the China Railway Society，2006(5)： 52-58.
[4]
夏禾.车辆与结构动力相互作用[M].北京:科学出版 社,2002.
Zheng Xiaolong. Analysis and Study of Train - bridge Coupling Dynamic of Anti - curve Railway Bridge System[ J]. Journal of Railway Engineering Society， 2014(12) ：46 -51，56.
[7]
刘文峰，宿健，何玉珊，等.32 m跨简支铁路桥梁横向振 动的研究分析[J].振动、测试与诊断，2004( 1) :57 -60. Liu Wenfeng，Su Jian，He Yushan，etc. Research on Horizontal Vibration of 32 m Span Simply Supported Railroad Bridges [ J ] . Journal of Vibration， Measurement and Diagnosis，2004(1) ：57 -60.
0-
33,57.
Rail Transport Letter [ 2004 ] No. 120， Railway Bridge Test Specification[ S].
2015, Vol. 32 
版权所有 © 2014 《铁道工程学报》编辑部