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Large-scale road network vulnerability analysis: a sensitivity analysis based approach

机译：大规模路网脆弱性分析：基于敏感性分析的方法

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摘要

Traditionally, an assessment of transport network vulnerability is a computationally intensive operation. This article proposes a sensitivity analysis-based approach to improve computational efficiency and allow for large-scale applications of road network vulnerability analysis. Various vulnerability measures can be used with the proposed method. For illustrative purposes, this article adopts the relative accessibility index (AI), which follows the Hansen integral index, as the network vulnerability measure for evaluating the socio-economic effects of link (or road segment) capacity degradation or closure. Critical links are ranked according to the differences in the AIs between normal and degraded networks. The proposed method only requires a single computation of the network equilibrium problem. The proposed technique significantly reduces computational burden and memory storage requirements compared with the traditional approach. The road networks of the Sioux Falls city and the Bangkok metropolitan area are used to demonstrate the applicability and efficiency of the proposed method. Network manager(s) or transport planner(s) can use this approach as a decision support tool for identifying critical links in road networks. By improving these critical links or constructing new bypass roads (or parallel paths) to increase capacity redundancy, the overall vulnerability of the networks can be reduced.
机译：传统上，对传输网络漏洞的评估是一项计算密集型操作。本文提出了一种基于敏感性分析的方法，以提高计算效率并允许大规模应用道路网络漏洞分析。所提出的方法可以使用各种脆弱性度量。为了说明的目的，本文采用Hansen积分指数之后的相对可及性指数（AI）作为网络脆弱性度量，用于评估链路（或路段）容量降低或关闭的社会经济影响。关键链接根据正常网络和降级网络之间的AI差异进行排序。所提出的方法仅需要网络平衡问题的单个计算。与传统方法相比，该技术显着降低了计算负担和内存存储需求。苏福尔斯市和曼谷市区的路网被用来证明该方法的适用性和有效性。网络管理员或运输计划人员可以使用此方法作为决策支持工具，以识别道路网络中的关键链接。通过改善这些关键链路或修建新的旁路道路（或平行路径）以增加容量冗余，可以降低网络的总体脆弱性。

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  • 来源
    《Transportation》 |2011年第5期|p.799-817|共19页
  • 作者

    Paramet Luathep; Agachai Sumalee; H. W. Ho; Fumitaka Kurauchi;

  • 作者单位

    Department of Civil and Structural Engineering, The Hong Kong Polytechnic University,Hong Kong SAR, China;

    Department of Civil and Structural Engineering, The Hong Kong Polytechnic University,Hong Kong SAR, China;

    Department of Civil and Structural Engineering, The Hong Kong Polytechnic University,Hong Kong SAR, China;

    Department of Civil Engineering, Gifu University, Gifu City, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    vulnerability analysis; sensitivity analysis; large-scale road network; accessibility;

    机译：脆弱性分析;敏感性分析;大型路网;可及性;

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