轨道交通网络列车衔接组织的递阶协调优化

Hierarchical Coordination Optimization of Train Schedule for Transfer in Urban Rail Network

协调轨道交通网络列车的运行组织,能够使运能资源得到合理配置。在分析网络协调性的基础上,将轨道交通网络视作动态大系统,建立换乘站子系统所在衔接层的换乘时间效益优化模型,再从网络协调层对换乘节点间列车衔接方案进行全局递阶优化,描述了相应的并行协调求解算法。结合实例模拟协调过程获得可选方案,对协调性和适用性做了比较,结果表明该方法可根据不同需求产生相应协调方案,为列车运行组织提供决策依据。

The coordination organization for trains is able to meet the demand of reasonable deployment for transportation resources in urban rail transit. Based on the analysis of network coordination, the urban rail network is treated as dynamic large-scale system. A model for optimization of train schedule in subsystem of transfer station at linkage layer is built, and the hierarchical optimal method for linkage schemes of transfer nodes at network coordination layer is presented. The related parallel algorithm is described. An example is designed to build network coordination. The selectable schemes are obtained and comparative analysis is made to identify their coordination and applicability. It indicates that this method can establish coordination scheme for specific requirement and provide guidance for train organization.