考虑攻击程度的城市轨道交通网络抗毁性分析

Under the background of urban rail transit network operation, the invulnerability analysis model of rail transit network was constructed, and a new method for calculating transfer station vulnerability was proposed. The model took the average path length, network efficiency and effective node reduction rate in L,P space as evaluation indexes, and considered the severity of network attack, which could be divided into general attack and severe attack. Taking Shanghai rail transit network as an example, invulnerability of L and P space network under attack of different levels were analyzed quantitatively, the 10 most vulnerable transfer stations were calculated under severe attack. The results indicate that Shanghai rail transit network has strong resistance to general attack and poor resistance to severe attack. Therefore, it is necessary to do a good job of risk prevention to reduce the risk probability of line interruption caused by serious faults at transfer stations and improve the emergency level.