Critical facility accessibility and road criticality assessment considering flood-induced partial failure

IF 2.7 Q2 ENGINEERING, CIVIL

Sustainable and Resilient Infrastructure Pub Date : 2022-11-25 DOI:10.1080/23789689.2022.2149184

Utkarsh Gangwal, A. Siders, J. Horney, H. Michael, Shangjia Dong

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引用次数: 4

Abstract

ABSTRACT This paper examines communities’ accessibility to critical facilities such as hospitals, emergency medical services, and emergency shelters when facing flooding. We use travel speed reduction to account for flood-induced partial road failure. A modified betweenness centrality metric is also introduced to calculate the criticality of roads for connecting communities to critical facilities. The proposed model and metric are applied to the Delaware road network under 100-year floods. This model highlights the severe critical facility access loss risk due to flood isolation of facilities. The mapped post-flooding accessibility suggests a significant travel time increase to critical facilities and reveals disparities among communities, especially for vulnerable groups such as long-term care facility residents. We also identified critical roads that are vital for post-flooding access to critical facilities. The results of this research can help inform targeted infrastructure investment decisions and hazard mitigation strategies that contribute to equitable community resilience enhancement.

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考虑洪水局部破坏的关键设施可达性及道路临界性评价

摘要本文考察了社区在面临洪水时对医院、紧急医疗服务和紧急避难所等关键设施的可及性。我们使用行驶速度降低来解释洪水引起的部分道路故障。还引入了一种修正的介数中心性度量来计算连接社区和关键设施的道路的关键性。所提出的模型和指标应用于100年一遇洪水下的特拉华州公路网。该模型强调了由于设施的洪水隔离而导致的严重关键设施通行损失风险。绘制的洪水后可达性地图表明，前往关键设施的旅行时间显著增加，并揭示了社区之间的差异，尤其是对于长期护理设施居民等弱势群体。我们还确定了关键道路，这些道路对洪水后进入关键设施至关重要。这项研究的结果有助于为有针对性的基础设施投资决策和减灾战略提供信息，有助于公平地提高社区抵御能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sustainable and Resilient Infrastructure ENGINEERING, CIVIL-

CiteScore

7.60

自引率

10.20%

发文量

期刊介绍： Sustainable and Resilient Infrastructure is an interdisciplinary journal that focuses on the sustainable development of resilient communities. Sustainability is defined in relation to the ability of infrastructure to address the needs of the present without sacrificing the ability of future generations to meet their needs. Resilience is considered in relation to both natural hazards (like earthquakes, tsunami, hurricanes, cyclones, tornado, flooding and drought) and anthropogenic hazards (like human errors and malevolent attacks.) Resilience is taken to depend both on the performance of the built and modified natural environment and on the contextual characteristics of social, economic and political institutions. Sustainability and resilience are considered both for physical and non-physical infrastructure.