Research On Vulnerability Of Urban Subway Network Based On Weighted Network Model

With the rapid development of Metro construction,the number of passengers at important stations and lines has increased rapidly,and the safety of Metro travel has been paid more and more attention.Previous studies have shown that the importance of different stations in urban rail transit will lead to different impacts on the connectivity of the Metro network.However,few studies have been conducted on how to find out the influencing parameters of Metro vulnerability.This paper presents a new calculation model for weighted complex network,especially for weighted rail transit,which is less studied.It also expounds the significance of weighted rail transit network more clearly,so that managers can prepare plans reasonably and practically to deal with emergencies and damage caused by them,which has practical significance.Taking Wuhan City as an example,firstly,this paper comprehensively analyzed the relevant data of vulnerability of urban rail transit network based on weighted network model,systematically traced the research history of complex network,urban rail transit and vulnerability at home and abroad,analyzed the deficiencies of current research progress,and provided theoretical support for the improved research model of vulnerability of urban rail transit network established in this paper.Then,the vulnerability analysis model of Metro websites based on the authorized network is successfully constructed.The paper introduces a method of vulnerability study of metro network from the point of view of deliberate attack,considering the queuing capacity of stations and the principle of choosing the nearest route artificially.Combining with the real route of Wuhan Metro network,the paper uses MATLAB to simulate,finds out the key stations and ranks their importance order,uses the change of network area,network efficiency and network function loss.To reflect the work efficiency of the Metro network,through the above work,the research on the vulnerability of the metro network has made deeper progress.Through this study,it is helpful to improve the safe operation management of Wuhan Metro,reduce the impact of subway disturbance factors,improve the operation performance of existing Wuhan Metro,make up for the lack of timely emergency measures and emergency plans of the Metro department,and reduce the probability of risk occurrence.