Research On The Characteristics Of Urban Multi-Mode Traffic Network Based On Complex Network Theory

In recent years,with the in-depth development of various disciplines,problems in the field of transportation can be solved with the knowledge of many other disciplines,complex network theory is one of them.Traffic network is a typical complex network,this paper uses the basic theory and analysis method of complex network to analyze the complex characteristics and robustness of urban multi-mode traffic network.At present,domestic and foreign scholars have made a lot of achievements in the research of urban traffic network.However,most scholars only study the complex characteristics of a traffic subnetwork,there is no unified study on the related subnetworks in the traffic network.In order to deeply analyze the complex network characteristics of urban multi-mode traffic network,promote the coordinated development of multi-mode traffic.Use the original mapping method to construct a model of urban multi-mode traffic network,which consists of three parts:car network,ground bus network and rail transit network.Combined with the actual operation of urban traffic network,the affecting factors about passenger flow and running time are considered comprehensively,improve the traditional weighting method,a more accurate and realistic model of the weighted complex network for urban multi-mode traffic is established.Use analysis methods of complex network,the network analysis software of Pajek and Network X to analyze the complex characteristics of multi-mode traffic networks compared with three single-mode subnetworks.Two kinds of analysis indexes of urban multi-mode traffic network robustness are proposed,the relative size of the maximally connected subgraph and the global efficiency of the network,compare and study the stability of traffic network under different attacks,the identification of key nodes in traffic network is discussed.Analysis results show that,compared with three single-mode subnetworks,the clustering coefficient of urban multi-mode traffic network increases,and the tightness between nodes is enhanced.The complex network for urban multi-mode traffic has typical small world property.It's robust to random attacks and vulnerable to deliberate attacks.To sum up,application and research results of complex network in multi-mode traffic network in nangang central district of Harbin,the complex characteristics and robustness of multi-mode traffic network in nangang central area can be directly reflected.The analysis results are summarized and combined with the research content and the actual traffic operation status,this paper puts forward some effective Suggestions for the traffic development in nangang central district,the future research is also prospected.