Study On Network Characteristics And Survivability Of Urban Rail Transi Network Based On Passenger Flow Weighted

With the accelerated construction,many urban rail transit has gradually been operated into a network,the share ratio of urban rail transit in the city public travel has gradually been increasing.We can make a favorable research about the complex nature of city rail transit system from a macro perspective,via using knowledge of complex network.However,due to the existence of traffic in the public transport network,we can not only study the static topology of the network,but also research network properties with loading the traffic information.This is of great significance to ensure the passenger travelling,optimize the urban rail transit network planning,improve passenger satisfaction.In this paper,introduce the basic theoretical knowledge of complex networks firstly and collect 40 cities that have operated rail transit at home and abroad.The statistical analysis shows that the urban rail transit network has shown the small world characteristics.Then,the cluster analysis is carried out,the cities is divided into three types of rail transit network,and the types represent the construction of rail transit network in three stages.Then,based on the consideration of the passenger flow distribution and the passenger’s transfer habit,this paper puts forward the C space modeling method based on L space.Then makes an example demonstration of the urban rail transit network in Chengdu,and analyzes the weighted degree,strength degree distribution,the weighted average distance of the network and the network adjacency,the results show that the average path length of the network increases and the network transmission efficiency decreases,after loading the traffic.Finally,this paper analyzes the influencing factors of the survivability of the rail transit network,among which the passenger flow distribution and the network topology are the most fundamental reasons.And simulate and analyze the survivability of Chengdu urban rail transit network with the passenger data.The urban rail transit network in this stage is fragile,the city’s integrated transport network has a better survivable performance after combining the ground public transportation network.