双“Y”型带共线段市域线路跨线列车开行方案优化

Optimization of Cross-line Train Operation Scheme for Double Y-shaped Municipal Rail Line With Shared Section

摘要:

针对双“Y”型带共线段结构的市域线路系统，制定列车径路备选集编制原则，并根据途经列车的种类将线路划分为5个区段。基于乘客选择行为分析，将不同区段间的乘客划分为3类；以企业运营成本和乘客出行时间成本最小为目标，建立市域线路跨线列车开行方案优化模型，并通过遗传算法求解。以广州市的广花、芳白线为案例，验证模型的有效性和算法的适用性。结果表明，2线均开行跨线列车的方案总体而言更优。

Abstract:

For a suburban railway line system with a double Y-shaped structure incorporating a shared section， formulation principles for the candidate train route set were established， and the line was divided into five sections based on the type of passing trains. Based on the passenger choice behavior analysis， passengers’ traveling between different sections was classified into three categories. An optimization model for cross-line train operation schemes on the suburban line was developed， with the objective of minimizing both enterprise operating costs and passenger travel time costs， and was solved using a genetic algorithm. Taking the Guanghua and Fangbai lines in Guangzhou as a case study， the validity of the model and the applicability of the algorithm were verified. The results indicate that the scheme in which both lines operate cross-line trains is generally superior.