高速列车几何曲线通过能力计算

Calculation of High Speed Train Geometry Curve Negotiation

提出一种分析高速列车几何曲线通过能力的动态计算方法,考虑了车辆的初始偏移量。给出了综合路况分析模型,可以统一考虑车辆在多种线路条件下的曲线通过能力。采用有限节点法和局部搜索技术开发了高速列车的几何曲线通过能力模拟程序。该程序可以在考虑车辆初始偏移量的情况下,模拟车辆通过定圆曲线、曲-直线、反向曲线以及包含缓和曲线的任意曲线时,车钩摆角、横向偏移量、车间距等物理参量随运行距离的动态变化规律。针对某型高速列车,分析了车辆在三种不同曲线路况下,车钩摆角及车体夹角在整个线路下的动态变化规律。最后分析了反向曲线中直线段长度对最大车钩摆角的影响。

A dynamic calculation method is proposed to analysis to rolling stock geometry curve negotiation, and the car body initial displacements are considered. A comprehensive track case is used to study the geometry curve negotiation of the rolling stock on varies curve tracks. The simulation software is developed using the finite node method and local search technique. The dynamic process of the coupler swing angle, car bodies lateral shift, inter-car gap and so on can be obtained using this software to simulate the rolling stock geometrically passing through the single curves, curve-straight lines and reverse curves even the random curve with transition curves, considering the initial vehicle offset. The rule of the coupler swing angle and included angle of the car bodies for the special EMU in the total track line are given on the three cases of the track. The influences of the length of the straight line in the reverse curve on the maximum coupler swing angle are given in the last.