城市轨道交通线路折返形式及其影响因素对折返能力的影响
曾小二
Influence of Urban Rail Transit Lines Turn-back Forms and Influencing Factors on the Turn-back Capacity
ZENG Xiao’er
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作者信息:西南交通大学信息科学与技术学院，611756，成都
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Affiliation:School of Information Science and Technology, Southwest Jiaotong University, 611756, Chengdu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.01.012
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中图分类号/CLCN:U292.5+1
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栏目/Col:研究报告
摘要:
［目的］折返能力作为衡量城市轨道交通线路运载效率的关键指标，其提升是当前面临的重要课题。因此，深入分析城市轨道交通的折返形式及相关因素对折返能力的影响显得尤为重要。［方法］采用实验室自主研发的一套城市轨道交通列车运行仿真系统，以实际运营的城市轨道交通线路为例，对多种折返形式下的折返能力进行计算与分析。根据折返作业的具体流程，定性分析影响折返间隔的各种因素，并研究相关因素对折返能力的影响。在此基础上提出优化措施，并代入具体的站型中进行定量验算，计算各优化措施在不同折返形式下的提升能力和限制条件。［结果及结论］通常情况下，站后折返的折返能力强于站前折返。所提的缩短停站时间，提高道岔侧向限速,降低控车舒适度和停车准确性要求,缩短列车换端时间等优化措施，在不同折返形式下的提升效果存在差异，需根据实际情况进行灵活选择。基于车车通信的列车折返形式相比于传统的基于车地通信的折返形式，在折返能力上有显著提升。
Abstracts:
［Objective］ Improving the turn-back capacity, a key indicator for evaluating the transportation efficiency of urban rail transit lines, is an important issue currently being faced. Therefore, it is of particular importance to conduct an in-depth analysis of the influence of urban rail transit turn-back forms and the related factors on turn-back capacity. ［Method］ In the case study of an actual operating urban rail transit line, a set of urban rail transit train operation simulation systems independently developed by the laboratory is adopted to calculate and analyze the turn-back capacity under various turn-back forms. According to the detailed process of turn-back operations, various factors affecting the turn-back interval are qualitatively analyzed, and the influence of the related factors on the turn-back capacity is studied. On this basis, optimization measures are put forward and quantitatively verified in specific types of station. The improvement capabilities and limiting conditions of each optimization measure are calculated under different turn-back forms. ［Result & Conclusion］ Under normal circumstances, the turn-back capacity of the train turning back behind the station is stronger than that in front of the station. The proposed optimization measures such as shortening the stop time, increasing the turnout lateral speed limit, lowering the requirements for train control comfort and parking accuracy, and shortening the train end-switching time have different improvement effects under different turn-back forms, and need to be flexibly selected according to the actual situation. The turn-back capacity is significantly improved with the train turn-back form based on vehicle-to-vehicle communication compared with the traditional one based on vehicle-to-ground communication.
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