摘要
公路网结构中关键节点的评估与辨识对路网结构安全具有重要影响作用。公路网是实际物理网络,里程和通行能力等功能属性是分析公路网结构特性的重要依据,能够表征路网节点间相互作用强度。根据公路网现有技术条件和数据采集情况,以表征网络统计特征的节点度和节点介数为基本指标模型,构建了评估公路网中节点关键程度的指标体系;采用字典序法、逆向检测法以及综合评估法对节点指标进行分析,建立了关键节点辨识的方法、流程及路网性能评估的新方法;并对我国东部某地区路网进行了仿真试验,结果表明:基于公路网结构特性建立的关键节点评估指标与辨识方法,能够将路网中节点关键程度定量,并准确辨识。该方法具有可行性和合理性,可以为我国公路网的应急管理和路网规划等提供一定的技术手段和方法。
The assessment and identification of key nodes in road network structure plays an important role to road network structure security. Road network is the actual physical network, functional properties such as mileage and capacity and so on are important basis for the characteristics analysis of road network structure, they can characterize the strength of the interaction between network nodes. According to existing technology and data collection of road network, node degree and node betweenness for reflecting the network＇s statistical characteristics as basic indexes, the index system for evaluating criticality of road network nodes was established. Through lexicographic method, reverse detection and comprehensive evaluation method, by analyzing the node indexes, a new method for identification of key nodes and evaluation of process and network performance was established. The simulation of a regional road network in eastern China was conducted. The result shows that the proposed evaluation indexes and identification method of key nodes based on road network structural characteristics can quantitatively and accurately identify the key node degree. It is feasible and reasonable, which provides a new technology and a new method to emergency management and road network planning of China in the future.
出处
《公路交通科技》
CAS
CSCD
北大核心
2012年第9期137-142,共6页
Journal of Highway and Transportation Research and Development
基金
"十一五"国家科技支撑计划项目(2009BAG13A01)
国家高技术研究发展计划(八六三计划)项目(2012AA112308)
关键词
交通工程
评价与辨识
网络科学
路网关键节点
结构特性
性能评估
traffic engineering
evaluation and identification
network science
key node of road network
structural characteristic
performance evaluation
