基于虚拟编组技术的大小交路列车开行方案优化

Optimization of virtual-coupling-orientated train operation plan based on full-length and short-turn routing

虚拟编组技术下的实时动态编组,为根据客流时空分布特征开行分区段不同编组列车提供了保障.在分析虚拟编组技术下大小交路列车运行的基础上,基于城市轨道交通客流分布不均衡特点,构建了以列车运营里程最小为目标的城市轨道交通运力配置优化模型.模型的考虑因素包括发车间隔、大小交路区段满载率、可用车辆数、线路通行能力等.最后,以北京市轨道交通4-大兴线和10号线为例,分析了平峰期两条线路的优化方案.研究结果表明:将虚拟编组技术与大小交路运营相结合,可在满足不同交路区段运力运量匹配需求前提下,更好地实现满载率和发车间隔的平衡,有利于提高乘客出行效率,并降低运营成本.

The real-time dynamic coupling under the virtual-coupling technology provides a guarantee for running multi-group trains in different sections based on the spatial and temporal distribution characteristics of passenger flow.After analyzing the train operation plan based on full-length and shortturn routing under the virtual-coupling technology,this paper builds an urban rail transit capacity allocation optimization model with the objective of minimizing the train operation mileage considering the uneven passenger flow distribution in urban rail transit.And the factors considered in the model include the departure interval,the full-load rate at large and small interchange sections,the number of available vehicles,and the line capacity.Finally,taking Line 4-Daxing and Line 10 in Beijing Municipal Railway as examples,the optimization scheme of the two lines during the off-peak period is analyzed.The results indicate that the virtual-coupling technology combined with the operation of full-length and short-turn routing can meet the demand for capacity matching of different interchange sections and achieve a better balance of full-load rate and departure interval,which is conducive to improving passenger travel efficiency and reducing operating costs.