中文摘要：

基于列车-轨道系统空间振动分析理论,考虑横风作用,建立横风-列车-轨道系统空间振动分析模型。根据弹性系统动力学总势能不变值原理及形成系统矩阵的＂对号入座＂法则,建立此系统空间振动矩阵方程,并编制相应的计算机程序求解该方程。计算横风作用下的列车-轨道系统空间振动响应,研究不同类型铁路车辆振动响应及倾覆稳定性的差异,分析横风对此系统振动响应的影响规律。研究结果表明：罐车的稳定性最好,敞车次之,棚车最差;横风对车体横向位移、轮重减载率和倾覆系数有很大影响,对车体横向加速度、脱轨系数及横向平稳性指标影响不大。

英文摘要：

Based on the analysis theory for spatial vibration of train-track system,an analysis model for spatial vibration of cross wind-train-track system was established considering cross-wind on train. The matrix equation of spatial vibration of the system was established on the basis of the principle of total potential energy with stationary value in elastic system dynamics and the rule of ＂set-in-right-position＂ for formulating system matrixes,and the corresponding computer program was developed to solve the equation. The spatial vibration responses of train-track system in cross-wind were calculated,and the difference of the vibration responses and capsizing stability between different kinds of rolling stock was studied. And then,the effect of cross-wind on the vibration responses of the system was analyzed. The results show that the stability of tanker car is the best,the gondola car takes the second place,and the box car has the worst stability. And the cross-wind has significant influence on the lateral displacement,wheel load reduction rate and overturning coefficient of the car body,while it has little influence on the lateral acceleration of the car body,derailment coefficient and lateral ride index of the car body.