Research On The Evolution And Robustness Of The Passenger Dedicated Line Weighted Transportation Network

Previous study on China’s high-speed railway passenger dedicated line network was that establishing the unweighted network topology model analyzed the network characteristics of passenger dedicated line network from the view of the whole, the actual number of train running on passenger dedicated line network were ignored, that the influence of edge weights of the network characteristics was ignored. Given this, based on the high-speed railway passenger dedicated line as the research object, using the theory of complex network to establish high-speed railway passenger dedicated line undirected weighted transportation network model, the static characteristics, robustness and its internal evolution mechanism of the high-speed railway passenger dedicated line undirected weighted transportation network model are further researched. The main research content was as follows:(1) This thesis conducted the structure features of China’s high-speed railway for passenger dedicated line transportation network under the weights function, a model of high-speed railway passenger dedicated line weighted transportation network was established through using the theory of complex network. The static characteristics of the network model were analyzed in combination with the Pajek analysis software and Matlab programming software, including degree distribution, strength distribution, edge weights distribution, relationship between strength and degree and the clustering coefficient. It is concluded that the railway for passenger dedicated line transportation network model is better than no weighted network to reflect the real nature of the passenger dedicated line network, also the results show that the network properties of railway passenger dedicated line transportation network is a small world network with scale free feature.(2) This thesis studied the connectivity robustness and function robustness of China’s high-speed railway passenger dedicated line transportation network under station and edge attacks, it simulated and analyzed the evaluation index of connectivity robustness and function robustness about the model under the random station and edge attacks and deliberate station and edge attacks with using Matlab, the results show that the height of the connected robustness and function robustness under the random station and edge attacks, the height of the connected vulnerability under the deliberate station and edge attack, the network’s function robustness relies on the network’s edge weights when the number of the attacked stations within a certain range.(3) In combination with the network characteristics of high-speed railway passenger dedicated line undirected weighted transportation network and classical BBV(Barrat Barthélemy Vespignani, Barrat、Barthélemy and Vespignani)evolution model algorithm and BBV weighted network evolving model research algorithm based on local-world, node weight limited multi-local area of the world weighted network evolution model algorithm is proposed which can be better to simulate the evolution of passenger dedicated line network mechanism. Using Matlab software specific numerical simulation analysis the dynamic evolution model, it is conclude that the corresponding network can be obtained by adjusting the parameters values, the dynamic evolution model can be better to simulate the actual weighted network topological structure characteristics, also the degree distribution and strength distribution of the network after evolution approximately meet the characteristics of power law.