城市轨道交通多交路运营线路通过能力损失及优化

Capacity Losses and Optimization for Multi-routing Operation Line in Urban Rail Transit

多交路运营是城市网络化轨道交通系统常采用的运营组织方式之一。针对多交路运营的特点,利用运行图铺画的方法详细分析线路通过能力在单交路区段及双交路区段的损失值大小,并归纳出计算公式;进一步结合计算公式分析通过延长列车运行周期来提高通过能力的优化方法及其实施过程。最后指出该方法在实际应用中与车底运用数之间存在的矛盾,应根据线路特点在二者之间权衡利弊。

Multi-routing operation mode is commonly used in the urban rail transit system with network operation organization. In line with the characteristics of multi-routing operation,the author firstly analyzed the capacity loss value in detail for single and double routing section using the method of drawing the train running diagram,and summarized the calculation formula. Then,on the basis of the calculation formula,the author discussed the method of optimizing traffic capacity by extending the train operation cycles and the corresponding implementation process of this method. Finally,the author pointed out that there were contradictions between this method and the number of vehicles used in actual application,and that the advantages and disadvantages should be weighted in accordance to the features of particular lines.