区域综合运输通道抗毁性分析

Invulnerability Analysis of Regional Transportation Corridors

区域运输通道是区域运输线路的骨干.通道抗毁性分析对发现通道网络薄弱环节、优化通道网络规划、保障运输安全等具有重要意义.以成渝经济区为例,抽取其运输通道网络,构建L空间下的复杂网络模型,构建基于节点度、节点运输重要度和节点介数的攻击策略,以网络全局效率和最大连通子图节点比为测度,借助Matlab和Pajek软件进行抗毁性分析仿真.结果表明:成渝经济区运输通道平均路径长度较大,连通性有待提高,在进行通道中公路、铁路网络规划时应注意联络线的布设,重庆、成都等应作为关键节点重点建设和保护.

Regional transportation corridor is the backbone of the transportation lines.Corridor invulnerability analysis is beneficial to optimize corridor network and guarantee the safety of transportation activities.Taking chengdu-chongqing economic zone transportation corridors for example,the paper construct a complex network model and also the attack strategy based on node degree,node transportation degree and node betweenness.The reliability of network is analyzed from two indexes of overall efficiency of network and relative size of maximum connectivity graph,the attack simulation is based on Matlab and Pajek software.The result shows that：the average path length is a little too long and have a poor ability of anti-destroying.We should pay attention to the tie line layout in highway and railway network planning and protect key nodes like Chengdu and Chongqing,etc.