地铁站前交叉渡线折返能力探讨

站前折返虽不是目前地铁终点站常用的折返站型,但在场地受限等情况下,亦是解决列车折返问题的有效途径。通过对单股道的侧进直出、直进侧出折返作业以及双股道折返作业的技术过程分析,总结上述作业的折返能力计算公式,认为折返能力大小均与进路办理时间和进出站时间有关,单股道折返能力还与列车的停站时间有关,同时对上述影响因素的取值、计算等问题进行分析;在此基础上,对该种折返站采用不同道岔号码的折返能力进行计算比较,对如何提升折返能力提出建议。

Analysis of the Turn-back Capacity of the Double Crossover in Front of the Subway Station

The turn-back before station is not a common type of turn-back station at present; however, when the site is limited, turn-back before stations can be effective in addressing the issues of of the turn-back stations. In this paper, by analyzing the technical process of the side into the straight reentry operation and straight into the side turn-back operation of the single track and the double track turn-back operation, the equation for the turn-back ability of the above operation can be developed. It is believed that the turn-back capacity is related to the handling time of the route and the time of in and out of the station. The capability of the single track is also related to the stopping time of the train. The value recording and calculation method of the aforementioned factors are analyzed. On this basis, the turn-back capacity of the turn-back station with different turnout numbers is calculated and compared. Finally, some suggestions on approaches for improving the turn-back ability are proposed. This investigation may serve as a reference for the calculation of turn-back capacity and may provide insight into the improvement of this capability.