大跨度铁路斜拉桥车桥耦合振动分析

以某主跨432m铁路斜拉桥为例，运用桥梁结构动力学与车辆动力学，将桥上通行列车和桥梁视为联合动力体系，建立精细的列车与大跨度铁路斜拉桥的车桥耦合动力分析模型，计算与分析了该桥列车通过时的桥梁动力响应和列车走行性，计算结果表明：当国产C62货车和CRH2客车以不同的速度通过斜拉桥时，车辆、桥梁的动力响应均能达标，列车具有良好的走行性，该斜拉桥具有足够的横向、竖向刚度。研究结果为大跨度铁路斜拉桥的动力设计提供了理论依据。

Coupled Vibration Analysis of Vehicle and Long-Span Railway Cable Stayed Bridge

Taking a cable-stayed main span 432 m railway bridge as the research objective,this paper considered the train and bridge as a combined dynamic system, and established the train-bridge coupling dynamic analysis model of the train and bridge to study the dynamic performance. Through computer simulation method,the spatial vibration responses when the C62 train and CRH2 train pass by with different speed were calculated. The calculation results show that：the bridge has enough stiffness, the overall dynamic performance is good and the bridge has good train running property. The research in this paper is expected to provide helpful reference for the future designs.