列车到发分布对高速铁路车站到发线通过能力利用的影响分析

Analysis of the Influence of Arrival and Departure of Trains on the Carrying Capacity of Express Railway Station

高速铁路列车不同到发分布影响车站到发线的运用方案,进而影响到发线通过能力的利用。基于高速铁路车站列车实际到发情况,从列车间隔时间和高峰时段特征两个维度系统地分析了列车到发分布及其对到发线通过能力的影响,并在此基础上构建了用以量化列车到发分布对通过能力影响的评估模型。最后,基于列车实际到发分布情况,设计了列车到发分布对通过能力影响的仿真实验。仿真结果表明:间隔时间缩短和高峰时段列车到发频率增强将增加列车对到发线数量的需求,而高峰持续时间对列车占用到发线数量的影响较小,高峰时段出现时间对车站到发线通过能力的影响与高峰前后的列车到发密集程度有关。

Different train arrival-departure distributions affect the utilization of arrivaldeparture tracks in stations and then further influence the carrying capacity of arrival-departure tracks. According to the actual train arrival and departure operations in high-speed railway stations, train arrival-departure distribution and its impact are systematically analyzed in two dimensions, namely, headway times and peak hours. On this basis, an evaluation model is developed to quantitatively analyze the impacts of train arrival-departure distribution on carrying capacity utilization. An experiment is conducted to simulate the actual train arrival-departure distributions. The experiment results indicate that the shorter headway time and the higher train frequency in peak hours can increase the supplies for arrival-departure tracks. The influence of peak time on the carrying capacity of the station is related to the concentration of trains before and after the peak.