Research On The Characteristic Analysis And Evolution Of Urban Public Traffic Network Based On Complex Network

The rapid development of urbanization has brought great pressure on urban traffic, public transport priority as a new and modern concept can effectively alleviate the urban traffic jam on. Urban public transport is a classic, open and complex system, despite experiencing long-term development but still have many shortcomings unresolved. As a new subject, complex networks rising in recent years and widely used in various fields of social life, provides a new perspective and platform for our study of urban public transport. Base on the previous studies, the paper studying on the topological abstraction and characterization and evolution model of the urban public transport network, and presents a method about the Hub node transit network identification.Abstraction the transit network with the method of L space and P space, take the domestic three cities such as Beijing, Shanghai and Hangzhou public transport network as the object, combination the existing research results and analysis the part describes the public transport network, summarized the characteristics of public transport network has preferred growth mechanism and random growth factor. The development of urban transit system changes to the urban space structure, urban planning and economic interests of all aspects of factors, is a constantly changing network. Only study the topology of the network, analyzes its inherent characteristics cannot embody its evolution rule. According to the evolution mechanism of bus network, this paper puts forward a public transport network evolution model of thinking the cost of node and limited degree based on the "mix preferred model " and simulation it with Matlab7.0, the result is similar with the characteristics of the actual public transport network.Taking network efficiency as the evaluation index, puts forward a method for searching the public transport network nodes. Analyzing it in a virtual and small public transportation network, finally proposed some suggestions and measures for the public transport network layout.