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High-resolution approach to quantify the impact of building-level flood risk mitigation and adaptation measures on flood losses at the community-level
International Journal of Disaster Risk Reduction ( IF 5 ) Pub Date : 2020-10-10 , DOI: 10.1016/j.ijdrr.2020.101903
Omar M. Nofal , John W. van de Lindt

Flood risk mitigation is paramount to decreasing the exposure of vulnerable communities to flooding events and provides a mechanism for communities to plan for future events. The majority of flood mitigation studies have focused on community-level mitigation rather than building-level mitigation measures. In this study, the impact of applying building-level flood risk mitigation measures was investigated as a means of mitigation strategy when community-level approaches are not feasible or possible. The building-level approaches include flood barrier systems, water pumps, and increasing the elevation of some select water-sensitive components within buildings. The approach developed herein is general and could be applied for any building type and is based on a probabilistic vulnerability method that includes uncertainty propagation across the damage/loss models. A suite of mitigation scenarios that use a combination of these building-level mitigation measures was applied to a portfolio of 15 building archetypes for a community-wide application. The impact of these mitigation scenarios on an illustrative example community is presented to demonstrate the ability to quantify the application of these technologies. The main contribution of this paper is the ability to divide any community into its smallest units and quantify the summation of these small changes to the whole community. The analysis results revealed that some building-level mitigation scenarios can significantly decrease flood losses at both the building and the community level.



中文翻译:

一种高分辨率的方法,用于量化建筑级减轻洪水风险和适应措施对社区一级洪水损失的影响

减轻洪水风险对减少脆弱社区遭受洪水事件的影响至关重要,并为社区提供了计划未来事件的机制。大多数洪水缓解研究都集中在社区一级的缓解措施上,而不是建筑一级的缓解措施。在这项研究中,当社区一级的方法不可行或不可能时,将采用建筑级别的洪水风险缓解措施的影响作为缓解策略的手段进行了调查。建筑层面的方法包括防洪系统,水泵,以及增加建筑物中某些对水敏感的组件的高度。本文开发的方法是通用的,可以应用于任何建筑物类型,并且基于概率脆弱性方法,该方法包括跨损坏/损失模型的不确定性传播。一套结合了这些建筑级别缓解措施的缓解方案已应用于15个建筑原型的组合,以用于社区范围的应用。提出了这些缓解方案对示例社区的影响,以证明量化这些技术应用的能力。本文的主要贡献在于能够将任何社区划分为最小的单元,并量化这些对整个社区的微小变化的总和。

更新日期:2020-10-11
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