级联失效下城市交通网络可靠性评价  

Reliability Evaluation of Urban Road Traffic Networks Under Cascading Failure

作　　者：吴志龙 郑长江[1] 郑树康 马庚华 陈志超 吴非 戴津雯 WU Zhilong;ZHENG Changjiang;ZHENG Shukang;MA Genghua;CHEN Zhichao;WU Fei;DAI Jinwen(College of Civil and Transportation Engineering,Hohai University,Nanjing 210024,China;College of Environment,Hohai University,Nanjing 210024,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210024,China;College of Artificial Intelligence and Automation,Hohai University,Nanjing 211100,China)

机构地区：[1]河海大学土木与交通学院,江苏南京210024 [2]河海大学环境学院,江苏南京210024 [3]河海大学港口海岸与近海工程学院,江苏南京210024 [4]河海大学人工智能与自动化学院,江苏南京211100

出　　处：《郑州大学学报(工学版)》2025年第2期82-89,共8页Journal of Zhengzhou University(Engineering Science)

基　　金：江苏省自然科学基金资助项目(BK20230964)。

摘　　要：为缓解城市交通网络拥堵问题,提高网络可靠性,基于复杂网络理论对城市交通网络级联失效现象进行研究。首先,构建加权双层城市交通网络模型,并在非线性负载-容量模型中引入失效阈值的概念量化节点失效概率,在此基础上将节点分为正常、失效和拥堵3种状态;其次,考虑到节点的时空相关性,提出了混合负载重分配策略,将失效负载分配到故障节点的相邻节点和次相邻节点;最后,以南京市某区域作为研究对象,从网络拓扑结构和节点运行质量两个角度来分析不同攻击方式和失效阈值对城市交通网络可靠性的影响。仿真结果表明:城市交通网络具有抵抗小规模节点和边失效的能力;攻击高重要性节点会加速城市交通网络崩溃,造成网络可靠性下降;在拥堵传播初期(t=40~65),增大失效阈值δ能够在一定程度上延缓级联失效扩散;当拥堵到达临界时间之后,更大的失效阈值(δ=1.6相较于δ=1.8)将引发更严重的级联失效现象。To alleviate the congestion problem and improve the reliability of the URTNs,the cascading failures based on complex network theory were studied in this paper.Firstly,a double-layer weighted URTNS network model was constructed.Secondly,a failure threshold was integrated into the nonlinear load-capacity model to quantify the probability of failure.Thus,the nodes were also classified into three states:Normal,Failure and Congestion.Additionally,a hybrid load redistribution strategy was proposed to distribute the failure load to the neighboring and sub-neighboring nodes of the failure node considering the spatio-temporal correlation.Finally,the proposed model was simulated by a case study of Nanjing to analyze the impact of different attack strategies and failure thresholds on the reliability of the URTNs.The results showed that the network had the ability to resist small-scale node and link failures;Attacking high-importance nodes could accelerate congestion diffusion.To alleviate the congestion problem and improve the reliability of the urban road traffic networks,the cascading failures based on complex network theory were studied in this study.Firstly,a double-layer weighted urbon road traflic networks network model was constructed.Secondly,a failure threshold was integrated into the nonlinear load-capacity model to quantify the probability of failure.Thus,the nodes were also classified into three states:normal,failure and congestion.Additionally,a hybrid load redistribution strategy was proposed to distribute the failure load to the neighboring and sub-neighboring nodes of the failure node considering the spatio-temporal correlation.Finally,the proposed model was simulated by a case study of Nanjing to analyze the impact of different attack strategies and failure thresholds on the reliability of the urbon road traflic networks.The results showed that the urbon road traflic networks had the ability to resist small-scale node and link failures.Attacking high-importance nodes could accelerate congestion diffusion,le

关 键 词：复杂网络 城市交通网络 级联失效 可靠性 网络拥堵 

分 类 号：U491.1[交通运输工程—交通运输规划与管理] O157.5[交通运输工程—道路与铁道工程]