Multi-Scale Analysis of High-Speed Railway Passenger Network in the New Western Land and Sea Corridor Based on Multilayer Complex Network Theory

The new Western Land and Sea Corridor is located in the western hinterland of China, connected to the Silk Road Economic Belt in the north, the 21st Century Maritime Silk Road in the south, and the Yangtze River Economic Belt in coordination, which is a critical development axis in China's regional development pattern. The high level of the high-speed railroad (HSR) network will further help the coordinated development of China's western region. This paper takes 73 prefecture-level cities in western China as research objects and builds an urban high-speed railroad operation network with cities as nodes and high-speed railroad operation lines as sides. Analyzes the topology of the network based on complex network theory analysis method and combines the k-core algorithm to stratify the network, adopts the idea of first dividing and then combining, divides the whole network into three layers. The results show that: high-speed railroad operation in western China network has a small world effect, and the network is dense its average path is small; the node cities show obvious hierarchical and regional characteristics, showing that the lower level of development of the high-speed railroad network, the more peripheral.