Research On The Design Of Route Network Of Small And Medium-Sized Airports Based On The Bi-Level Programming Model

The design of air route network for small and medium-sized airports is one of the key strategic decisions that determine the future development of the airport.A well-planned air route network of the airport is an effective way to increase passenger flow.Therefore,this thesis establishes the research topic of "Air Route Network Design for Small and Medium-Sized Airports Based on a Two-Layer Planning Model".The aim is to provide theoretical support for the design of air route networks for small and medium-sized airports through this research.To address the practical issue of subsidized routes by the government for airports,this thesis takes into consideration the interests of both airports and airlines,as well as the competitive relationships among airlines from the perspective of airport.Under the joint decision-making of the airport and several airlines,the design and planning of the air route network is conducted through the establishment of a two-layer model.The following are the main research work carried out in this thesis:(1)An improved non-strict multi-allocation hub-and-spoke network model with capacity constraints was established based on the classic three-index hub-and-spoke network model,relaxing the assumption that only hub airports can connect between feeder airports.A sample of domestic cities was selected for verification,and the two models were analyzed and compared,with sensitivity analysis conducted on relevant parameters.The results show that the non-strict hub-and-spoke network can effectively reduce the total cost of the network and alleviate congestion at hub airports.Case studies demonstrate the effectiveness of the model and lay a foundation for establishing a Two-Layerl Planning Model in the future.(2)A small and medium-sized airport route network design model based on a Two-Layer Planning Model was established to address the practical issue of airports operating subsidized routes under government guidance.This thesis starts from the perspective of a specific airport and establishes a Two-Layer Planning Model with the upper level having the maximum passenger transport volume of the airport and the lower level aiming for the lowest total cost of designing multiple airline route networks as the objective function.In the lower-level model,a strict hub-and-spoke network model was chosen to provide transportation path selection for the subsidized O-D pairs planned by the upper-level airport.The established strict hub network model was compared with the planning model where airlines are the sole decision-makers and sensitivity analysis was conducted on relevant parameters,demonstrating the rationality and effectiveness of this method compared to traditional methods.(3)By relaxing the assumption that only hub airports can connect between regional airports,a non-strict capacity hub route network model is used as the lower-level model.It aims to establish a non-strict hub network airline’s small and medium airport route network design planning model,providing transport path selection for the subsidy O-D of the upper-level airport.This model is then compared with the design and planning model for the route network of small and medium-sized airports under the participation of a strict hub-and-spoke network airline,and sensitivity analysis is conducted on relevant parameters to compare and analyze the effects of different parameters on the route network planning of small and medium-sized airports,in order to demonstrate the rationality and effectiveness of the model.