Analysis Of Cascading Failure And Invulnerability Of Airport Network Based On Deliberate Attack

Due to the rapid development of the civil aviation transportation industry,the transportation pressure is also increasing year by year,which has higher requirements on the network fighting ability and operation efficiency of the airport network in the face of emergencies.In the airport network,the failure of a single airport node often affects other nodes,especially the failure of key nodes will affect the whole network.Therefore,it is of great significance to identify the key airport nodes in the airport network and analyze the cascading failure of the network for the improvement and optimization of the whole airport network structure.Based on this,The main research contents of this thesis have the following several respect:(1)According to the related data of East China airport of civil aviation in 2019,this paper constructs the East China airport network model,analyzes the index of degree,agglomeration coefficient and proximity in the topological characteristics of the airport network,and considers the traffic economic characteristics index such as airport passenger throughput and urban population.On the basis of using the entropy method to determine the weight of each index,the TOPSIS method is used to construct a comprehensive evaluation system model,and finally the importance of the airport nodes of the airport network in East China is ranked.(2)According to the ranking results of importance and the theory of complex network,this paper constructs and analyzes the invulnerability evaluation model of cascade failure of airport network under deliberate attack.The initial load of airport nodes with different importance is redistributed by deliberate attack.The cascading failure of the network is measured by the node failure efficiency of the network.Finally,the airport network in East China is used as an example and the results are summarized and analyzed.(3)Based on the research of cascading failure invulnerability,considering the influence of airport level and aircraft level on the load distribution in the process of cascading failure,the original cascading failure invulnerability evaluation model is updated to obtain the cascading failure invulnerability model.Finally,the airport network in East China is used as an example to simulate and the simulation results are analyzed and summarized.At the same time,combined with the results of this paper,it puts forward some suggestions and measures for the layout of airport network and the optimization of invulnerability.