Analysis on the Critical Node of the Chengdu-Chongqing Economic Circle Based on the Expressway Network

With the intensification of the modernization process, the capacity of individual cities has gradually become single, and city groups have replaced it. City group emerged later in China, so there is less experience with the problems that may arise. Scientific understanding of city groups is an essential process of rapid economic development. Only by scientifically building and developing city groups can they play their role. In this paper, the Chengdu-Chongqing Economic Zone is analyzed, and a highway network is constructed in 34 urban areas. The degree of Centrality, betweenness centrality, and closeness centrality are comprehensively sorted. The current policy is compared to analyze whether the current construction meets the development needs. Divide the 34 urban areas into three levels and compare the seven economic belts: In the development of highway infrastructure in thirteen economic belt cities, the infrastructure construction of Leshan, Meishan and Yibin expressways is still insufficient, and it needs to be built in the future development and construction.