The Impact of the Urban Linkage Relations in the Beijing-Tianjin-Hebei Region in the New Era on Economic Development Based on the Gravity Model in the Context of Big Data

This research deeply analyzes the formation mechanism and evolution dimension of the existing linkage relationship by measuring the urban linkage relationship in Beijing-Tianjin-Hebei region. Based on the research of traditional gravity model, the linkage relationship between cities is clearly presented by adopting ArcGIS software drawing tools reasonably, and the issue of urban linkage is studied in China's urban system network. On the premise of the existing formation mechanism and evolution dimension of linkage relationship, through the measurement research of urban linkage relationship, it gradually penetrates into the dimension of coordinated economic development. The main research conclusions drawn are as follows: Beijing, Tianjin and Shijiazhuang, as the three central cities in the Beijing-Tianjin-Hebei economic circle, have a significantly strong effect in promoting the economic development of individual cities within the one-hour economic circle formed by them, which is more prominently after the central cities and individual cities have accessed railways; The linkage relationship between Beijing and Tianjin is characterized by dislocation, which depends on the node index of individual cities instead of distance stratification. For these three central cities Beijing, Tianjin and Shijiazhuang, radiate evenly to hinterland cities in different dimensions and the radiation intensity in Tianjin is characterized by "stronger in the east and weaker in the west".