高速铁路车桥系统横向振动研究

Study of the lateral vibration of vehicle-bridge system on high speed railways

以车桥系统横向动力平衡方程为基础，分析了列车在地面线路上运行以及列车通过桥梁时列车横向动力响应的变化；并改变桥墩刚度，计算比较了桥墩刚度变化对车桥系统横向振动的影响．

Taking the snake action as vibration source on the basis of lateral dynamic equilibrium equations of vehicle-bridge system, the lateral dynamic response of vehicle are calculated and compared when the vehicle runs on the ground and passes through the bridge.Through changing the pier rigidity, the influence of the pier rigidity on the lateral dynamic response of vehicle-bridge system are analyzed.