城市公共交通網(wǎng)絡演化研究
[Abstract]:The urban public transport network has gradually developed into a complex network system, which is the core of the bus and the rail transit network. In this paper, based on the methods and ideas of the complex network theory, the system dynamics and the mean field theory are quoted. The evolution mechanism of urban public transportation network is deeply discussed, and the development and development of public transportation are combined with the construction of public transportation. The characteristics of the new network evolution model are constructed, and the following beneficial attempts have been made in the in-depth study of urban public transport network evolution. First, from the perspective of network morphology, the evolution of urban public transport network is divided into three stages of development: the backbone network, interlaced network and mixed network. The influence factors of urban public transport network evolution are analyzed, including four aspects: public transportation demand, public transport supply, traffic diversity development and network internal optimization. Through the study of the causal relationship between different factors, the negative feedback chain of public transportation demand and economy is obtained, and public transportation supply and economy are provided. The evolution model of urban public transport network evolution based on different influence factors with time is constructed. After that, the ideas and methods of constructing the classic WS small world model and BA model are used, and the node connection domain and the inter node mix are put forward in combination with the characteristics of the actual evolution process of urban public traffic network. In conjunction with two evolutionary mechanisms, a network evolution model based on the hybrid connection domain is constructed. The expression of degree distribution under the network evolution model is derived by applying the system dynamics and the mean field theory, and the analysis is further analyzed with Pajek. With the increasing network scale, the network degree distribution curve evolves gradually from power law function to the network evolution model. The exponential function shows that the network is gradually evolving from internal structure imbalance to network steady state, and the steady state network is further expounded and analyzed. Finally, the public transport network of three cities in Shanghai, Guangzhou and Hongkong are studied. The bus network, the network degree distribution curve of the rail transit network are first studied, and nearly ten are combined. The change trend of the number of public transport network lines and the average degree of the rail transit network has been found in the continuous expansion of the public transport network, and the internal knot optimization is also carried out. Based on the actual transfer relationship between the bus and the rail transit network, the connection network structure model is put forward, and the concept of the connection network strange degree and its computing side are defined. On the basis of empirical study, the curve of singularity distribution shows exponential distribution, which reflects the randomness of the evolution of the connection network. By comparing and analyzing the results of the empirical data and model fitting, the actual process of the gradual evolution of the connection network to the steady state network is expounded, which provides a rationalization proposal for the development of urban public transport network planning.
【學位授予單位】:西南交通大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:U491.17
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