Research on Integrated Multi-stage Routing Planning of Rail Transit in Metropolitan Areas
In the context of increasingly dense and interconnected rail transit network in metropolitan areas,the network structure of different periods will affect the operational routing plan.Considering the changes in the rail transit network in metropolitan areas at different stages,this paper conducted research on the integrated planning of multi-stage operational routes for the rail transit network in metropolitan areas.First of all,with the formation and running frequency of routing vehicles at each stage,the assignment of direct and transfer passenger flow as the decision variables,with the goal of minimizing passenger travel time and routing mileage,and considering constraints such as passenger flow demand,serv-ice frequency,passing capacity,routing setting rules,and the continuity of multi-level segments of the routing,a multi-stage operation routing integration model for the metropolitan area line network was constructed.The results of an empiri-cal study based on the newly built intercity railway in a metropolitan area show that the integrated preparation of different period routing plans using this method has significant continuity and stability.Compared to the independent routing oper-ation mode of each line,it can reduce the additional time for passengers due to transfer,with a time saving ratio of 18%to 19%.
railway transportationmulti-stage routing planninginteger programmingmetropolitan area rail transitinteroperability pattern