快慢车运营线路到发线设计优化研究
闻千1荆敏2付义龙2
Research on ArrivalDeparture Track Design Optimization for Express/Local Train Lines
WEN Qian1JING Min2FU Yilong2
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作者信息:1.中国交通建设股份有限公司， 100032， 北京
2.北京城建设计发展集团股份有限公司， 100034， 北京
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Affiliation:1.China Communications Construction Co., Ltd., 100032, Beijing, China
2.Beijing Urban Construction Design & Development Group Co., Ltd., 100034, Beijing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007－869x.20230248
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中图分类号/CLCN:U239.5
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栏目/Col:土建工程
摘要:
［目的］到发线作为快慢车运营组织的关键基础设施，其设计合理性直接影响运营效率与工程投资效益。针对当前我国快慢车线路中存在的配线型式与功能定位不匹配、工程规模与运营效果失衡等问题，亟需对到发线选型和工程设计进行精细化研究。［方法］通过案例分析法，系统梳理双岛四线（正线内、外侧）、一岛四线和双侧四线等4种典型配线的适用场景；运用技术经济比较法，结合CBTC（基于通信的列车控制）信号系统特性，提出有效长度动态优化模型；采用牵引计算模拟，量化分析不同道岔选型对运行效率的影响。［结果及结论］提出应基于快车越行、慢车避让和快慢车换乘等核心运营需求进行配线选型，综合考虑常规安全防护距离、无防护设置、安全线替代及单向行驶等情况确定到发线有效长度，并统筹区间运行时间、乘客舒适度和土建规模等因素完成道岔选型。通过实际工程案例验证，该方法可显著提升到发线工程设计与运营需求的匹配度。
Abstracts:
［Objective］ As a critical infrastructure for express/local train operation, the arrival-departure track rational design directly impacts operational efficiency and engineering investment returns. Given current issues in China′s express/local lines—including mismatches between track configurations and functional requirements, and imbalances between engineering scale and operational outcomes, it is imperative to conduct refined researches on arrival-departure track selection and engineering design. ［Method］ Through case analysis method, the applicable scenarios of four typical track configurations are systematically examined, including twin-island four-track (with inner/outer main lines), single-island four-track, and bilateral four-track. By employing technical-economic comparison methods and combining CBTC signaling system characteristics, a dynamic optimization model for effective track length is proposed. And by using traction calculation simulations, the impact of different turnout types selection on operational efficiency is quantitatively analyzed. ［Result & Conclusion］ It is proposed that selecting track configurations should be based on core operational requirements including express train overtaking, local train holding, and transfer between express/local trains. The effective length of arrival-departure tracks should be determined by comprehensive evaluation of conventional safety clearances, zero-clearance operations, safety sidings, and unidirectional operations. Turnout type selection should integrate factors such as section running time, passenger comfort, and civil engineering scale. Validated with practical engineering cases, this method significantly improves the alignment between arrival-departure track design and operational demands.
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