Research On Topological Properties And The Reliability Of High-speed Railway Network Based On Complex Network

The construction of high - speed railway network is a very important part of Chinese railway network construction. High-speed rail has many very obvious transport advantages,such as strong carrying capacity,high speed,good security,high punctuality rate, comfort and low energy consumption. High-speed railway network has its own characteristics, the network construction, train operation and management of the network needs more efficient planning and management strategies. The structure of the high-speed railway network is based on the high-speed railway station and the transportation route. The relationship between stations and lines forms the structural characteristics of the network. Through the research theory of complex network, the study and analyze of the reality high-speed railway network can be more effectively, and we can study its optimization strategy.This article used the actual operation of high-speed railway operating information and built a high speed railway traffic network model through computer software. Studied the topology, reliability and optimization strategy of the network.Through Excel and Matlab,the topological characteristics of complex networks are calculated and analized. The important nodes in Chinese high-speed railway traffic network were selected according to the calculation results. What's more, this paper made evaluations according to the different network topology characteristics. Based on the analysis of node strength and intensity distribution we can find that Chinese high-speed railway traffic network obey the power-law distribution and it is a WS network.This paper constructed an index to evaluate the reliability of complex networks. Through selective failure of nodes in the network, the reliability of the network is studied. The results shows that the important nodes in the network have great influence on the overall reliability of the network and it is much larger than the influence of average node in the network. Summarized and put forward the optimization strategy of the network, which is conducive to the management of Chinese high-speed railway to grasp the overall characteristics of the future development of high-speed railway network and strengthen the effective theoretical support.