交通网络弹复度与易碎度的测算与分析

Evaluation and analysis of resilience and frangibility for transportation networks

中文关键词  弹复性工程  系统安全  性能测算  可靠性  交通网络  铁路系统

英文关键词  resilience engineering  system safety  performance evaluation  reliability  transportation network  railway system

中文摘要

      弹复性是系统在失效或被破坏之后能够恢复正常工作的能力. 弹复性工程是当今国际上研究的热点. 本文提出了基于节点对间的独立路径可靠度和交通网络的弹复度的定量测算方法, 提出了反映节点和路段对交通网络影响大小的易碎性的概念和测算方法. 论文还就弹复度和易碎度的几个相关性质提出了几个重要定理. 针对我国的铁路网络, 计算了所有节点城市和路段的弹复度和易碎度, 并对弹复度和易碎度高的节点的分布规律进行了探讨, 得出了一些有益的结论.

英文摘要

       Resilience is the ability of a system to return to the normal state after a strong perturbation from failure, disaster or attack. Resilience Engineering is a hot topic attracting many researchers. A reliable independent path-based resilience evaluation approach for transportation networks is designed and recommended. The concept and evaluation approach of frangibility are introduced to represent the importance of edge or node failure to the whole network. To study the properties of independent paths, resilience and frangibility, we also prove several theorems. The evaluation approaches are applied to evaluate the resilience and frangibility of the railway network in China mainland. The location rules of the nodes and edges with highest resilience or frangibility are discussed. Some interesting conclusions are presented.