论文部分内容阅读
城市道路交通网络中个别节点的失效,可能引发大规模的交通瘫痪。为描述这种级联失效行为,考虑节点的自修复功能和灾害蔓延机制,基于复杂网络的蔓延动力学理论构建了城市道路交通网络灾害蔓延动力学模型。利用灾害蔓延动力学模型分析了城市道路交通网络节点失效与节点连接强度、节点度及自修复因子的相关性。结果表明,节点自修复能力和延迟时间因子对灾害蔓延有重要影响,所建立的模型能有效模拟城市道路交通网络的灾害演化动力学行为。
The failure of individual nodes in the urban road network may cause large-scale traffic paralysis. In order to describe this kind of cascade failure behavior, considering the node self-healing function and disaster spreading mechanism, a dynamic model of urban road traffic network disaster spreading is constructed based on the theory of propagation dynamics of complex networks. The model of disaster spread dynamics is used to analyze the relativity between node failure and node connection strength, node degree and self-healing factor in urban road traffic network. The results show that the node self-healing ability and delay time factor have an important influence on the disaster spread. The established model can effectively simulate the disaster evolution dynamics of urban road traffic network.