采用延续进路缩短市域铁路有岔站股道有效长方案
宋睿
Solution to Shorten Track Usable Length at City Railway Turnout Stations by Using Continuation Routes
SONG Rui
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作者信息:中铁第四勘察设计院集团有限公司，430063，武汉
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Affiliation:China Railway Fourth Survey and Design Institute Group Co., Ltd., 430063, Wuhan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.12.057
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中图分类号/CLCN:U231.2
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栏目/Col:产学研视窗
摘要:
［目的］相比CBTC(基于通信的列车控制)系统，CTCS2+ATO(中国列车自动运行控制系统第二级+列车自动运行)系统由于采用了将保护区段内置的方式，股道的有效长较长，导致部分地下有岔车站土建投资增加。市域铁路的地下站相对较多，采用CTCS2+ATO系统会增加项目的土建投资，为提高项目经济性，需研究缩短CTCS2+ATO系统对市域铁路有岔站股道有效长要求的方案。［方法］在保证安全防护距离不变的前提下，对有岔车站，通过采用配置虚拟地面数据来确保停车到位，同时通过设置延续进路来缩短股道的有效长。详细分析了采用该方案需要重点考虑的问题，如延续进路解锁方式、信号布置及虚拟数据配置原则、故障场景下的安全性保障、安全线设置等。［结果及结论］对于采用延续进路方案的解锁方式，推荐采用停稳即解锁方式；同时，对于设置有侧线的有岔站，为提高运行效率，推荐在股道正向接车方向设置安全线，在反向接车方向不设置安全线。对于市域铁路有岔站，采用延续进路方案相比原方案，站台端至道岔岔前基本轨缝的距离可由70m缩短至25m，可显著减少地下车站规模及土建投资，提高项目的经济性。
Abstracts:
［Objective］ Compared to the CBTC (communication-based train control) system, CTCS2+ATO (Chinese train control system level 2 + automatic train operation) system requires longer usable track lengths due to its built-in protection zones, leading to increased construction investment for some underground turnout stations. Since city railways tend to have more underground stations, using the CTCS2+ATO system can significantly raise civil engineering costs. To improve the economic efficiency of such projects, it is necessary to study a solution is needed to reduce the track usable length requirements for city railway turnout stations using the CTCS2+ATO system. ［Method］ While maintaining the same safety protection distance, it is proposed to use virtual ground data to ensure accurate stopping positions and setting up continuation routes to shorten the effective track length at turnout stations. Key considerations for this solution, such as unlocking methods for continuation routes, signal placement, principles for configuring virtual data, safety guarantees during fault scenarios, and the setup of safety lines, are thoroughly analyzed. ［Result & Conclusion］ For unlocking continuation routes, a ′stop and unlock′ method is recommended. At turnout stations with side tracks, it is suggested to install safety lines in the track forward direction instead of the reverse direction to improve the operational efficiency. For city railway turnout stations, the proposed continuation route solution can reduce the distance between the platform end and the basic track joint in front of the turnout from 70 m to 25 m. This can significantly reduce the scale of underground stations, lower civil engineering costs, and improve the project overall economic efficiency.
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