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在NaSch模型的基础上,针对铁路线路特点提出了一种用于模拟铁路线路弯道的多列车追踪运行的元胞自动机模型.应用该模型,进行了计算机数值模拟,研究了具有不同弯道半径、不同外轨超高和不同弯道长度的线路弯道对铁路交通流的影响.模拟结果表明:建立的模型能够准确的反映出特殊线路交通流情况,线路弯道对列车的行车安全有较大的影响,同时再现了时走时停的交通波现象,根据仿真结果得出了随着弯道半径的增大,列车的晚点时间逐渐减少,合理选择弯道半径、外轨超高值和弯道长度,可以显著提高线路的通行能力,减低轮轨磨耗,保证列车的安全、舒适运行.所得结果对铁路线路选线设计和运营管理有一定的指导意义.
Based on the NaSch model, a cellular automata model is proposed for tracing multi-train trains running on the curve of the railway line, according to the characteristics of the railway lines. By using this model, the numerical simulation is carried out, Radius, different outer rails and different curve length on the railway traffic flow.The simulation results show that: the model can accurately reflect the traffic flow of special lines, the line curve on the train driving safety The simulation results show that with the increase of curve radius, the time delay of train gradually decreases, and the radius of bend, the value of outer-rail super-high and The length of the curve can significantly improve the capacity of the line and reduce the wear of the wheel and rail to ensure the safety and comfortable operation of the train.The results have some guiding significance for the route design and operation management of the railway line.