考虑路径特性的道路交通网络冗余性分析
Redundancy analysis of road traffic network considering path characteristics
路庆昌 1李建宇 1崔欣 2王张鑫 1李晓玲1
作者信息
- 1. 长安大学 电子与控制工程学院,陕西 西安 710064
- 2. 大连海事大学航运经济与管理学院,辽宁 大连 116026
- 折叠
摘要
为探究路段特性对路径冗余的影响以及突发事件下道路交通网络的冗余能力,在传统道路网络路径冗余数量方法的基础上,考虑有效路径之间的效率差异和重叠程度,构建基于路径多样性以及突发事件下冗余能力的冗余性评估模型;分析不同成本对路径多样性的影响和突发事件对冗余能力的影响,并对冗余能力进行敏感性分析.结果表明:道路交通网络中路径多样性取决于出行路径成本的类别以及路段出行成本之间的差异,路段出行成本越接近,有效路径的数量越多,路径多样性越高;突发事件场景下道路网络冗余性取决于失效路段的重要程度,失效路段越重要,网络冗余性越低;出行成本容忍度在一定范围内的增加有助于提高突发事件下道路网络的冗余能力,过高或过低的出行成本容忍度都不会对网络的冗余能力有较为明显的提高.
Abstract
In order to explore the influence of road section characteristics on path redundancy and the redundancy ability of road traffic networks under emergencies,based on the traditional method of path redundancy quantity in road networks,considering the efficiency difference and overlap degree between effective paths,a redundancy evaluation model based on path diversity and redundancy ability under emergencies was constructed.The influence of different costs on path diversity and the influence of emergencies on redundancy ability were analyzed,and the sensitivity analysis of redundancy ability was carried out.The results show that the path diversity in the road traffic network depends on the type of travel path cost and the difference between the travel cost of the road section.The closer the travel cost of the road section is,the higher the number of effective paths is,and the higher the path diversity is.In the emergency scenario,the redundancy of the road network depends on the importance of the failed road section.The more important the failed road section is,the lower the network redundancy is.The increase of travel cost tolerance within a certain range helps to improve the redundancy capacity of the road network during emergencies.Too high or too low travel cost tolerance will not significantly improve the redundancy capacity of the network.
关键词
路径特性/道路交通网络/冗余性/有效路径/路段失效Key words
path characteristics/road traffic network/redundancy/effective path/link failure引用本文复制引用
基金项目
国家自然科学基金面上项目资助(71971029)
陕西省杰出青年基金资助(2021JC-28)
出版年
2024
NETL
NSTL
万方数据