上海轨道交通高架区段列车打滑问题研究
魏然之
Train Slipping Issues in Elevated Section of Shanghai Rail Transit
WEI Ranzhi
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作者信息:上海地铁维护保障有限公司通号分公司，200235，上海
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Affiliation:Telecom & Signal Branch, Shanghai Metro Maintenance Support Co., Ltd., 200235, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.11.013
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中图分类号/CLCN:U284.48∶U233
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栏目/Col:研究报告
摘要:
［目的］上海轨道交通高架区段多次出现列车打滑现象。列车打滑时车载信号设备会中断列车信号模式输出，需要司机手动驾驶列车慢速前进，以重新建立可用的信号模式。这对各线路运营服务质量影响较大，因此有必要深入研究打滑原因，并提出相应的措施。［方法］通过收集比对列车打滑事件的相关数据，对列车打滑时所处的季节、温度、天气、时段，以及信号系统对打滑逻辑的判定、线路坡度及弯道、列车制动方式等因素的影响进行详细分析，归纳了列车在高架区段出现打滑现象的不利因素，并针对性地制定了预防措施和改善方案。［结果及结论］雨雪天气、低温季节、频繁制动、高架线路的大坡度和急弯道，以及列车盘式制动方式等因素为高架区段列车打滑的不利因素。各不利因素的叠加影响易导致高架区段列车打滑。通过提前设置湿轨模式及特别限速，能稍微减少列车打滑事件的发生，但会使列车旅行速度变慢，应酌情使用。9号线实际情况表明，信号系统车载软件算法优化能有效减小列车打滑造成的影响。
Abstracts:
［Objective］ Train slipping incident frequently occurs in elevated sections of Shanghai rail transit. When the train slips, the onboard signaling equipment will interrupt the train signal pattern output, then drivers need to manually operate the train at a slow speed to re-establish a usable signal pattern. This significantly affects the operational quality of various lines, making it necessary to thoroughly investigate the causes of train slipping and propose corresponding measures. ［Method］ By gathering and comparing data related to train slipping events, a detailed analysis is conducted on factors such as season, temperature, weather, time period, signaling system logic for detecting train slipping, track gradients and curves, and train braking methods. Adverse factors contributing to train slipping incidents in elevated sections are summarized, and targeted prevention measures and improvement plans are formulated. ［Result & Conclusion］ Adverse factors leading to train slipping in elevated sections include rainy and snowy weather, cold seasons, frequent braking, steep gradients and sharp curves on elevated lines, as well as train disc braking methods. The cumulative impact of these factors can easily cause train slipping in elevated sections. Implementing wet track mode and special speed limits in advance can slightly reduce the occurrence of train slipping, but may slow down the train travel speed and should be used judiciously. The actual situation on Line 9 indicates that optimizing the signaling system onboard software algorithm can effectively mitigate the impact of train slipping.
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