基于流量可调重分配的级联失效模型

doi:10.13229/j.cnki.jdxbgxb.20221397

摘要/Abstract

摘要：

为提高城市道路交通网络可靠性，减少级联失效对网络造成的危害，本文对城市路网级联失效进行研究。首先，构建具有双层网络结构特性的城市道路交通网络模型。其次，根据容量-流量模型以及城市路网特点，建立城市道路交通网络级联失效模型。再次，利用网络效率、网络阻塞程度、网络通行质量、正常节点比4个指标对网络可靠性进行评估，分析了不同攻击策略、拥堵失效阈值对道路交通网络可靠性的影响。最后，以上海市某区域道路交通网络为例进行案例仿真分析。仿真结果表明：选择性攻击下网络的可靠性更低；失效阈值越小，网络的可靠性越高，级联失效抗毁性越强。研究结果对提高城市道路交通网络可靠性和增强网络级联失效抗毁性具有重要的现实意义。

关键词: 交通运输规划与管理, 级联失效, 网络拥堵, 可靠性, 复杂网络, 仿真

Abstract:

In order to improve the reliability of urban road network and reduce the damage caused by cascading failure to the network， the cascading failure of urban road network is studied. Firstly， the urban road network model with double layer network structure was built. Secondly， based on the capacity-flow model and the characteristics of urban road network， the cascading failure model of urban road network was established. Thirdly， the reliability of urban road network was evaluated by four indexes： network efficiency， congestion degree， network traffic quality and normal node ratio. The reliability of urban road network under different failure strategies and congestion failure thresholds was analyzed. Finally， the Shanghai regional road network was taken as an example to carry out a case study. The simulation results show that the reliability of the network is lower under selective attack. The smaller the failure threshold， the higher the reliability of the network， and the stronger the cascading failure resistance. The results of this paper have important practical significance to improve the reliability of urban road network and enhance the cascading failure resistance.

Key words: transportation planning and management, cascading failure, network congestion, reliability, complex network, simulation

中图分类号:

U491.1

郑长江,陶童统,陈志超. 基于流量可调重分配的级联失效模型[J]. 吉林大学学报(工学版), 2024, 54(9): 2441-2450.

Chang-jiang ZHENG,Tong-tong TAO,Zhi-chao CHEN. Cascading failure model based on adjustable redistribution of traffic flow[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(9): 2441-2450.

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路段规模等级	初始流量/ ［pcu·（h·km）^-1］	初始容量/ ［pcu·（h·km）^-1］	自由行驶速度/（km·h^-1）
Ⅰ	5 000	6 000	60
Ⅱ	3 333	4 000	60
Ⅲ	1 667	2 000	40
Ⅳ	833	1 000	30

路段	规模等级	距离长度 /km	初始流量 /（pcu·h^-1）	初始容量 /（pcu·h^-1）	初始阻抗/s
1-2	Ⅰ	0.19	950	1 140	11.4
1-13	Ⅱ	0.23	767	920	13.8
2-14	Ⅳ	0.22	183	220	26.4
6-10	Ⅲ	0.10	167	200	9.0
13-23	Ⅱ	0.27	900	1 080	16.2
14-23	Ⅲ	0.21	350	420	18.9
15-16	Ⅲ	0.22	367	440	19.8
16-17	Ⅳ	0.26	217	260	31.2
19-31	Ⅱ	0.56	1 867	2 240	33.6
22-33	Ⅰ	0.56	2 800	3 360	33.6
?	?	?	?	?	?

节点排序	节点度		节点强度		介数中心性
节点排序	节点编号	数值	节点编号	数值	节点编号	数值
1	11	4	33	5 850	11	4 072
2	14	4	27	5 517	31	4 072
3	15	4	31	5 467	35	4 072
4	27	4	22	5 033	52	4 072
5	31	4	54	4 400	59	4 072
?	?	?	?	?	?	?