城市轨道交通折返能力分析及优化措施

Analysis on turnaround capacity of urban rail transit line and its optimization measures

分析在传统折返配线条件下,最高速度和编组量数(车辆长度)对线路折返能力的影响,并总结其相互制约关系:即随着编组的增大和速度目标值的提高,传统方式折返能力将逐步下降,如当速度目标值为160 km/h、车辆选型编组为A型车8辆编组的情况下,折返能力最大为27对车/h(侧式站后折返)。为应对传统折返方式的能力限制,提出新型折返方式——混合式折返方式,其适用于通道运量需求较大、速度目标值较高的情况,并通过仿真模拟软件X-drive测试不同速度、不同编组、不同停站时间条件下的折返能力。结果表明:在速度目标值160 km/h、车辆选型编组为A型车8辆编组的情况下,最大折返能力可达38对车/h,与传统方式相比,折返能力及输送能力可提高40.7%。

This paper analyzes the influence of the maximum speed and the number of marshalling(vehicle length)on the turn back capacity of the line under the condition of traditional turn back line,and sums up the mutual restriction relationship.With the increase of marshalling and the increase of target speed value,the turn back capacity of traditional mode will gradually decrease.For example,when the target speed value is 160 km/h and the vehicle type selection is 8-car formation of type A.The turn back capacity of the line will be reduced gradually.The maximum capacity is 27 pairs/h(turn back after side station).In order to deal with the capacity limitation of traditional turn back mode,a new type of turn back mode,hybrid turn back mode,is proposed.It is suitable for the situation that the demand of channel traffic volume is large and the target value of speed is high.The turn back ability of different speed,different formation and different dwell time is tested by simulation software X-drive.Through the analysis and research on the hybrid turn back mode,under the condition of target speed of 160 km/h,vehicle type selection and formation of 8-car formation,the maximum turn back capacity can reach 38 pairs of vehicles/h,which is 40.7%higher than that of the traditional mode.