High-resolution approach to quantify the impact of building-level flood risk mitigation and adaptation measures on flood losses at the community-level
High-resolution approach to quantify the impact of building-level flood risk mitigation and adaptation measures on flood losses at the community-level
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DOI：
10.1016/j.ijdrr.2020.101903
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发表时间：
2020-12
影响因子：
5
通讯作者：
O. Nofal;J. Lindt
中科院分区：
文献类型：
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作者：
O. Nofal;J. Lindt
减轻洪水风险对于减少脆弱社区遭受洪水事件的风险至关重要，并为社区规划未来事件提供了一个机制。大多数防洪减灾研究都集中在社区一级的减灾措施，而不是建筑物一级的减灾措施。在本研究中，当社区层面的方法不可行或不可能时，研究了应用建筑物层面洪水风险缓解措施作为缓解策略手段的影响。建筑物层面的方法包括防洪系统、水泵和增加建筑物内一些选定的水敏感部件的高度。这里开发的方法是通用的，可以应用于任何建筑类型，是基于概率脆弱性的方法，包括不确定性传播的损坏/损失模型。一套缓解方案，使用这些建筑物级别的缓解措施的组合被应用到一个社区范围内的应用程序的15个建筑原型的投资组合。这些缓解方案对一个说明性的例子社区的影响，展示了量化这些技术的应用的能力。本文的主要贡献是能够将任何社区划分为最小的单元，并将这些小变化的总和量化为整个社区。分析结果表明，一些建筑物级减灾方案可以显着减少洪水损失的建筑物和社区的水平。
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.