Research On Cooperative Location Of Multi-system Rail Transit Station Among Metropolitan Area

Rail transit has a typical structure of "point-line-network".The location of rail stations,the connecting lines between rail stations and the connecting relationship between rail lines constitute the network of rail transit.In the past,Metro,light rail and other central urban rail transit systems has been occupying the absolute position in urban rail transit system.However,with the continuous development of rail transit,rail transit presents a multi-standard,multilevel and integrated development trend among the metropolitan area.In this case,it is worth discussing whether the previous methods for station location can meet the development requirements of "multi-network integration".Rail station is not an independent individual,and there must be connected lines between other stations.Therefore,it is of practical significance to consider the station location from the perspective of network.In this regard the specific research contents of this paper are as follows:(1)Analyze the functional positioning,economic and technical characteristics of rail transit of various system among the metropolitan area,and explore the coordination mechanism between different rail transit system.Integrate the elements of coordination,analyze the coordination mode,summarize the needs and difficulties of coordination,and clarify the coordination objectives.(2)Analyze and compare the characteristics of various complex network topology methods,construct the multi-system rail network topology in metropolitan area.Analyze the characteristics of network topology and statistical indicators of network,establish the key indicators of the performance of multi-system rail network in metropolitan area,and analyze the impact of site selection schemes of different types of stations on structure of network and performance of index through examples.(3)Based on the shortest path search algorithm and the identification theory of key station of complex network,establish the collaborative location model of rail transit stations in metropolitan area from the perspective of multi-system rail network topology,which takes the maximum efficiency and network integration of multi-system rail transit network as the optimization goal.And the simulated annealing algorithm is used to design the corresponding algorithm to solve the model.(4)Wuxi the multi-system rail network in Wuxi is taken as an example in the paper.The collaborative location of multiple key stations of multiple lines in the second round of construction planning of Wuxi City makes the new line network and the existing line network compound into a multi-standard rail transit network with higher overall efficiency and network integration,so as to verify the feasibility of the model proposed in this paper.