大跨度公轨合用斜拉桥的车桥风耦合振动研究

Wind-Coupled Vibration of Vehicle-Bridge of Long-Span Cable-Stayed Bridge with Public Rail

大跨度公轨合用斜拉桥在横向风荷载的作用下会加大车辆冲击荷载等动荷载的动力响应,产生较为明显的变形和振动,从而影响到桥梁结构安全、桥上行车安全和旅客乘坐舒适度。主要针对列车-汽车-桥梁-风进行耦合动力学分析,研究耦合体系中桥梁、公路汽车和轨道列车振动响应并开展评价。

Under the action of transverse wind load,the dynamic response of vehicle impact load and other dynamic loads will be increased,resulting in obvious deformation and vibration.Thus affects the bridge structure safety,the bridge driving safety and the passenger ride comfort.In this paper,the coupling dynamics analysis of train-vehicle-bridge-wind is carried out,and the vibration response of bridge,road car and rail train in coupling system is studied and evaluated.