Research on the efficiency of Beijing-Tianjin-Hebei airport group based on system dynamics

The Beijing-Tianjin-Hebei Airport Group is a nonlinear complex system with dynamic changes and feedback mechanisms. It is difficult for a general model to simulate an airport group. This paper adopts the system dynamics method to establish the airport group efficiency evaluation model, adjust the variable parameters, and verify the policies implemented in each airport in this airport group. The study found that the overall efficiency of the Beijing-Tianjin-Hebei Airport Group has increased year by year. However, the Beijing Capital International Airport has experienced over-utilization of resources in the past three years. The efficiency of Tianjin Binhai International Airport has been rising, changing from the excessive resource redundancy in 2010 to the nearly full use of airport resources in 2017. Although the efficiency of Shijiazhuang Zhengding Airport has increased, the airport resources have been still wasteful. Through the simulation of the airport group, we can understand the efficiency of the airport group and each airport, and fully understand the integrity of the airport group and the mutual impact mechanism between the airports.