| As China steps into modernization,the needs of social and economic development and national travel demand are increasing,and China has a large land area and a large population,so high-speed railway is needed to meet the needs of social development.In recent years,China’s high-speed railway develops rapidly,its scale is increasing,and gradually forms a high-speed railway network.In the process of constantly improving the entire road network,road network site,circuit connection between more closely,the topology of the network is also becoming complicated,if network of a particular site or circuit malfunction,light affect the normal operation of local network,or affect the reliability of the whole network,therefore the research of high speed rail network topology,The reliability of optimized network will guarantee the normal operation of the whole high-speed railway network.Firstly,this thesis introduces the basic theory of complex network from the perspective of network topological structure parameters and network reliability.In the theoretical process,the local physical network of high-speed railway network is combined with complex network theory,and the role and significance of complex network related theory in high-speed railway network are analyzed.Then the characteristics of high-speed railway network are analyzed.According to the characteristics and research needs of high-speed railway network,Space L model is selected to construct the topological structure of high-speed railway network.After the model is determined,major stations of high-speed railway network in 2020 and 2030 are selected,and the high-speed railway network built in 2020 is taken as a reference to make statistics on whether the construction status of some high-speed railways in the network by 2030 belongs to "pending construction","under construction" or "open to traffic".Then,according to the construction rules of the model,the topology model of high-speed railway network in 2020 and 2030 was drawn by Visio,and the adjacency matrix was established respectively.After the high-speed railway network model is built,Matlab is first used to calculate the topological structure parameters of the high-speed railway network in2020 and 2030,such as degree,clustering coefficient,point and side mediums.On the whole,the degree values of high-speed railway network stations in 2020 and 2030 show high degree values of a few stations.Most of the sites are characterized by low degree value,showing certain scale-free characteristics;From the individual point of view,compared with 2020,the clustering of high-speed railway network in 2030 increases in northwest and southwest regions,and the density of the whole network increases,while the average path decreases,the network accessibility increases,and the degree of network stations increases,and the network connectivity is enhanced.Then of the plan to build 2030 high-speed rail network reliability simulation,from two angles,stations and lines with random attack,selecting attack,a single point of attack way to test the reliability of the network,the process using connected efficiency and maximal connected subgraph as the reliability of the quantitative indicators,to complete the reliability of the network simulation. |
