摘要
都市圈交通网络是构建区域安全韧性发展格局的重要基石。以长江经济带中成都都市圈、武汉都市圈和南京都市圈为研究案例,基于网络韧性评估框架,以常态和突发攻击两种情景,测度长江经济带典型都市圈公路网络韧性,主要结论为:(1)在常态情景下,三都市圈的公路网络韧性的集聚性、传输性、层级性分异明显,且网络的发育程度均有待提高。(2)在突发情景下,三都市圈在随机攻击和两种排序攻击下表现出明显的动态韧性分异,并各具不同的优势,成都都市圈综合表现相对最优,面对介数排序攻击时具有明显优势;南京都市圈综合表现位居其次,在面对度值排序攻击时具有明显优势;武汉都市圈综合表现居于最末,只在面对随机攻击时具有明显优势。(3)在突发情景下,都市圈公路网络的鲁棒性和脆弱性呈现一定的相互拮抗作用,在随机攻击下表现为鲁棒性强于脆弱性,在排序攻击下表现为脆弱性强于鲁棒性,且基于介数排序的攻击方式更易对网络造成结构性破坏。(4)从网络拓扑结构的角度分析网络韧性分异机制,并针对性提出都市圈公路网络韧性提升策略。
The traffic network of metropolitan areas is an important cornerstone for building a secure and resilient regional development pattern.Based on the network resilience assessment framework,taking the Chengdu,Wuhan and Nanjing metropolitan areas in the Yangtze River Economic Belt as research cases,this study measured the resilience of the typical urban road networks in the Yangtze River Economic Belt under normal and emergency attack scenarios.The results show:(1)Under normal scenarios,the aggregation,transmission,and hierarchical differentiation of the traffic network resilience in the three metropolitan areas are significant,and the spatial form of the network differs considerably.(2)Under emergency scenarios,the dynamic resilience of the three metropolitan areas varies significantly under random attacks and two types of intentional attacks.Each area has its own advantages.Chengdu Metropolitan Area has the best overall performance and obvious advantages against attacks based on betweenness centrality.Nanjing Metropolitan Area has the second-best overall performance and obvious advantages against attacks based on degree centrality.Wuhan Metropolitan Area has the weakest overall performance and only exhibits obvious advantages against random attacks.(3)Under emergency scenarios,there is a certain antagonistic effect between the robustness and fragility of the traffic network in metropolitan areas.Robustness is stronger than fragility under random attacks,while fragility is stronger than robustness under intentional attacks,and attacks based on betweenness centrality are more likely to cause structural damage to the network.(4)This work analyzed the mechanism of network resilience differentiation from the perspective of network topology structure,and proposed targeted strategies to improve the resilience of urban agglomeration highway networks.
作者
化星琳
彭翀
张梦洁
HUA Xing-lin;PENG Chong;ZHANG Meng-jie(School of Architecture and Urban Planning,Huazhong University of Science and Technology,Wuhan 430074,China;Hubei Province Urbanization Engineering Technology Research Center,Wuhan 430074,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2023年第10期2006-2017,共12页
Resources and Environment in the Yangtze Basin
基金
国家重点研发计划项目(2022YFC3800103)
国家社会科学基金重点项目(21AZD048)。
关键词
公路网络
韧性分异
都市圈
长江经济带
复杂网络
highway network
resilience differentiation
metropolitan area
Yangtze River Economic Belt
com-plex network
