基于复杂网络的危险品运输网络抗毁性仿真

Invulnerability Simulation Analysis of Hazardous Materials Transportation Network Based on Complex Network

通过构建危险品运输超网络模型,分析了网络之间的相互作用和影响,继而建立了危险品运输网络模型生成方式;通过引入危险品运输网络"最短路径"、"平均最小风险路径距离"和"网络最大连通子图"概念,提出了"网络风险效率"和"最大连通度"抗毁性测度模型;根据网络流量特性,构建了危险品运输网络介数模型。以危险品运输网络为例进行仿真,仿真结果表明:危险品运输网络抗毁性表现为对随机攻击的鲁棒性和蓄意攻击的脆弱性,抗毁性更接近于无标度网络;其抗毁性是由少数节点和边维系的,且网络对节点攻击的抗毁性低于对边攻击的;网络最大连通度性能优于网络风险效率,适当增加系统冗余性可提高网络抗毁性。

It analyzed the interaction and impact between the networks by establishing the super- networks of HMTN, and then the generating method of HMTN was established. It defined the concept of ＂the shortest path of HMTN＂, ＂the average risk-path distance＂ and ＂the maximal con- nected subgraph＂, proposed the ＂efficiency of network risk＂ and ＂maximal connected degree＂ as the measurement indexes of invulnerability model of HMTN. It established betweenness centrali- ty model of HMTN according to its flow characteristic. Then the performance of invulnerability of HMTN was respectively researched. The simulation results show that., the invulnerability of HMTN is closer to the scale-free network which is robustness to random attack and vulnerability to deliberate attack~ the invu,lnerability of HMTN is maintained by a small number of nodes and edges and the invulnerability of edge is higher than the node＇s~ the maximal connected degree of HMTN outperforms the efficiency of network risk and increase the redundancy of system appropriately can improve the invulnerability of HMTN.