基于加权耦合映像格子的拥堵道路网络级联失效研究  

Research on Cascading Failure of Congested Road Network Based on Weighted Coupled Mapping Lattice

作　　者：卢金霞 许浩 唐秋生[1] LU Jinxia;XU Hao;TANG Qiusheng(School of Traffic&Transportation,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学交通运输学院,重庆400074

出　　处：《武汉理工大学学报（交通科学与工程版）》2023年第3期396-401,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金(51208538)。

摘　　要：文中构建基于加权耦合映像格子模型的道路网络级联失效研究方法并进行仿真分析.以重庆市南岸区某区域道路为例,采用L空间法抽象路网,用复杂网络指标节点度、节点介数,以及节点强度对道路进行分析,考虑道路的拓扑结构、节点,以及道路流量的影响.改进耦合映像格子模型,攻击不同关键节点,仿真不同外部扰动下、不同耦合强度下道路拥堵产生的级联失效反应.结果表明:在外部扰动R≥2时,路网产生大面积失效,应提前保护路段流量大的邻接节点.在不同耦合强度下级联失效范围中,路网结构对失效影响更大且存在同步性特征,应保护多路交叉口.The research method of road network cascade failure based on weighted coupled map lattice model was constructed and simulated.Taking a regional road in Nan’an District of Chongqing as an example,the road network was abstracted by L-space method,and the road was analyzed by using the node degree,node betweenness and node strength of complex network indicators,and the influence of road topology,nodes and road flow was considered.Moreover,the coupled map lattice model is further improved to attack different key nodes,and the cascading failure response caused by road congestion under different external disturbances and different coupling intensities is simulated.The results show that when the external disturbance R≥2,the road network will fail in a large area,and the adjacent nodes with large traffic should be protected in advance.In the cascading failure range under different coupling strengths,the road network structure has a greater influence on the failure and has synchronous characteristics,so the multi-way intersection should be protected.

关 键 词：交通网络 道路拥堵 级联失效 加权耦合映像格子 

分 类 号：U414[交通运输工程—道路与铁道工程]