摘要
基于复杂网络理论,在分析国内地铁网络拓扑结构的基础上对其相继故障进行了研究。结果表明:国内地铁网络具有较大平均最短路径,聚类系数近似为零,节点度和介数具有线性正相关性,度分布近似为Poisson分布,网络结构近似为随机网络;在相继故障扩散过程中蓄意攻击比随机攻击具有较快的传播速度,但在扰动幅度和故障规模关系中呈现出相似的变化趋势,蓄意攻击效果并不明显。
To organize the subway transportation well and deal with the emergency situations, basic characteristics of domestic subway network should be analyzed and obtained for the planner and operators in subway system. Based on complex network theory, domestic subway networks are analyzed in terms of topological structure and cascading failure. The results are obtained as follows： the domestic subway network has larger average path length; the clustering coeffi- cient approximately equals to zero; the degree and betweenness of point are positive correlated; the degree distribution is similar to Poisson distribution and the network structure is similar to stochastic network. Meanwhile, a faster speed of cascading failure propagation is presented under the intended attack than under the random attack. However, it presents a similar trend in the relationship in the scale of failure and the perturbation amplitude while the effect of deliberate attack is not obvious.
出处
《交通信息与安全》
2012年第5期50-54,共5页
Journal of Transport Information and Safety
基金
国家科技支撑计划项目(批准号:2011BAG01B01)
中央高校基本科研业务费专项资助项目(批准号:2009JBM042
2009YJS044)资助
关键词
复杂网络
地铁网络
拓扑结构
相继故障
complex network
subway network
topological structure
cascading failure
