The influence of soil-pile interaction on the dynamic response of a train-bridge coupled system was studied. Based on the substructure method, the whole train-bridge-pile foundation-soil system was divided into the train-bridge interaction subsystem and the pile-soil interaction subsystem, the motion equations of them were established, respectively. When establishing the latter’s motion equation, in order to consider the system’s frequency correlation, its impedance function in frequency domain was converted approximately into that of a high-order spring-damping-mass model in time domain. The dynamic responses of the two subsystems were obtained with the iteratively solving method, respectively. A train with 8 cars passing through a 5-span simply-supported beam bridge was taken as a case study, influences of soil-pile interaction on the dynamic response of the train-bridge coupled system were studied. The results showed that after considering soil-pile interaction, dynamic responses of the train-bridge coupled system increase; so, the effects of soil-pile interaction should be considered fully in future computations to get the results on safe side.
收稿日期: 2016-09-21
出版日期: 2018-01-28
引用本文:
乔宏1,夏禾1,杜宪亭1. 考虑桩土相互作用的车桥耦合动力分析[J]. 振动与冲击, 2018, 37(3): 105-111.
QIAO Hong 1 XIA He 1 DU Xian-ting 1. Dynamic analysis for a train-bridge coupled system considering soil-pile interaction. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(3): 105-111.
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