单列高速列车运行仿真模型与算法

Simulation Model and Algorithm for Single High-Speed Train Operation

根据高速铁路线路特性,构建线路的3层节点网络模型。第1层描述车站和区间,第2层描述车站中心点、车站与区间的分界点和线路限速变化点及连接这些点的线路,第3层描述线路实际属性变化点及连接这些点的线路。鉴于高速动车组具有动力分散、质量均衡分布的特点,将动车组视为质量均匀且具有动力的绳体,创建高速动车组绳体模型。以动车组通过变坡点和变曲率点为例,分析动车组的受力状态,推导出对应的列车加速度计算公式。提出一种基于预推演的高速列车运行仿真算法。依据建立的线路模型、列车模型和仿真算法,开发了单列高速列车运行仿真系统。通过实例仿真验证了仿真模型与算法的准确性和实用性。

The line model with three-layer node network is built based on the line characteristics of high-speed railway. The top layer describes stations and sections. The middle layer describes station centerlines, the dividing points between stations and sections, the change point for the speed limit of lines, and the lines connecting these points. The bottom layer describes the change points of the actual line attribute and the lines between them. Considering the scattered driving force and evenly distributed mass of high-speed Electric Multiple Unit (EMU), EMU is regarded as the chord body with such attributes and the chord body model of EMU is established. The stress state of EMU is analyzed in the points of gradient change and curve change, and the corresponding train acceleration formula is derived. A simulation algorithm of high-speed train operation based on pre-deduction is proposed. The simulation system for single high-speed train operation is developed by integrating the three-layer node network, cord body model and pre-deduction simulation algorithm. The example simulation has verified the accuracy and practicality of simulation model and algorithm.