考虑车辆过缝的车-桥耦合振动分析方法

To consider the influence of expansion joint parameters on the vehicle-bridge coupling dynamic response, the equivalent contact force and displacement models were proposed by analyzing the process of wheel passing through the joint. The vehicle-bridge coupling dynamic response analysis model considering the impact of expansion joint parameters was established by the local mode extraction method and the modal synthesis method. Based on the Matlab platform, the analysis procedure of vehicle-bridge coupling vibration considering vehicle passing expansion joint and the numerical calculation method were constructed. The vehicle-bridge coupling dynamic response analysis method considering the expansion joint parameters was verified by the field-testing results of a simple-supported-to-continuous girder bridge. The results show that the errors between the numerical results and the field-testing results of the peak values of the acceleration and displacement response of the expansion joints and the main beam are within 7%, indicating that the proposed analysis method can be used to analyze the vehicle-bridge coupling dynamic response considering the impact of expansion joint parameters.