350km/h高速列车风致安全研究

Study on the wind-induced security for 350km/h high-speed trains

结合高速列车空气动力学和多体系统动力学,系统研究了350km/h高速列车的风致安全特性。首先建立了头车—中间车—尾车编组的高速列车空气动力学模型,研究了不同侧风速度(包括不同风速大小和不同风向角)下高速列车气动载荷的变化规律。然后建立拖-动-拖编组的高速列车多体系统动力学模型,将得到的气动载荷作为外加载荷作用于列车上,研究了高速列车的运行安全性和运行姿态,为侧风下350km/h高速列车的安全运行提供参考。

The aerodynamics and multi-body system dynamics are combined to study systematically the characteristics of wind-induced security for high-speed trains with the speed of 350km/h.It first establishes the aerodynamic model of the high-speed train for the head car,the middle car and the tail car,and analyzes the characteristics of aerodynamic loads of high-speed train under different side-wind velocities（including different wind speeds and different wind angles）.Then it establishes the multi-body system dynamic model of the high-speed train with the trailer car,the motor car and the trailer car,on which the aerodynamic loads are dealt with as external loads to study the operation safety and operation attitude of 350km/h high-speed trains,which provides a reference for the safe operation of high-speed trains with the speed of 350km/h under side-wind.