Dynamic analysis of train-bridge system under vessel collision and running safety evaluation of high-speed train
With a vessel collision force as external load, a dynamic analysis model is established for a coupled train-bridge system subjected to a collision-load. A (32+48+32) m continuous bridge with PC box-girders and a Chinese-made CRH2 high-speed train are considered as a case study. While the vessel collision load acts on the pier, the whole histories of the train running on the bridge are simulated, and the dynamic responses of the bridge and the train are calculated. The results show that the vessel collision load greatly increases the dynamic responses of the bridge, and remarkably affects the running safety of the CRH2 train. A method to evaluate the running safety of high-speed trains on the bridge subjected to collision load is investigated, and the influence of train speed and collision intensity on the train running safety is comprehensively analyzed, based on which the safety threshold curve of train-speed and collision intensity is proposed.
School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
Abstract：With a vessel collision force as external load, a dynamic analysis model is established for a coupled train-bridge system subjected to a collision-load. A (32+48+32) m continuous bridge with PC box-girders and a Chinese-made CRH2 high-speed train are considered as a case study. While the vessel collision load acts on the pier, the whole histories of the train running on the bridge are simulated, and the dynamic responses of the bridge and the train are calculated. The results show that the vessel collision load greatly increases the dynamic responses of the bridge, and remarkably affects the running safety of the CRH2 train. A method to evaluate the running safety of high-speed trains on the bridge subjected to collision load is investigated, and the influence of train speed and collision intensity on the train running safety is comprehensively analyzed, based on which the safety threshold curve of train-speed and collision intensity is proposed.
夏超逸，张 楠，夏 禾，崔堃鹏. 船舶撞击作用下车桥系统动力响应及高速列车运行安全分析[J]. 振动与冲击, 2015, 34(6): 155-161.
XIA Chaoyi, XIA He, ZHANG Nan, CUI Kunpeng. Dynamic analysis of train-bridge system under vessel collision and running safety evaluation of high-speed train. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(6): 155-161.
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