常导高速磁浮列车折返间隔时间研究

Turn-back Interval Time of Normal Conducting High-speed Maglev Trains

[目的]列车折返间隔时间作为影响常导高速磁浮线路通过能力的重要因素之一,由于其列车运行控制原理与传统轨道交通系统存在较大差异,传统轮轨交通的列车折返间隔研究难以直接应用,需结合常导高速磁浮运行控制特点开展针对性研究。[方法]以高速磁浮列车交通系统典型的单渡线折返方式为研究对象,通过分析其折返作业流程,建立了一种列车折返间隔时间计算模型,得到其解析算法。结合列车折返方式、列车编组、列车停站作业时间、牵引供电分区划分等多种影响因素,参考上海磁浮列车示范运营线的线路情况进行仿真计算分析。[结果及结论]结果表明,车站按单分区划分时,站前折返间隔时间小于站后折返,车站按双分区或四分区划分时,则反之;牵引分区划分对站前折返间隔时间基本无影响,而对站后折返间隔时间缩短明显,且四分区下的折返间隔时间一般小于双分区,但对于上客作业时间明显大于下客作业时间的折返站,两者折返间隔相近。

[Objective]Train turn-back interval time is a critical factor influencing the throughput capacity of normal conducting high-speed maglev lines.Due to the significant differences in train operation control principles between maglev and traditional rail transit systems,the findings about train turn-back interval from conventional wheel-rail transportation studies are not directly applicable.It is aimed to conduct targeted research based on the operational control characteristics of normal conducting high-speed maglev systems.[Method]Focusing on the typical single crossover turn-back mode of high-speed maglev train systems,through analyzing the turn-back operation process,a calculation model for train turn-back interval time is established,deriving its analytical algorithm.Various influencing factors,such as train turn-back method,train formation,station dwell time,and traction power supply zoning,are considered.Simulation calculation analysis is conducted with reference to the operational conditions of Shanghai Maglev Demonstration Line.[Result&Conclusion]The results indicate that when stations are divided into single sections,the turn-back interval time before station is shorter than after station,while it is converse when stations are divided into double or quadruple sections.The division of traction power zoning has little impact on the turn-back interval time before station,but significantly shortens the turn-back interval time after station.Additionally,the turn-back interval time under quadruple sections is generally less than that under double sections.However,for turn-back stations where the boarding operation time significantly exceeds the alighting operation time,the turn-back intervals are similar between the two division cases.