This study focuses on the physical vulnerability of buildings to flash floods using an indicator-based methodology. A physical vulnerability index (PhVI) that combines intrinsic vulnerability (IV) of buildings and flash flood intensity (FFI) is proposed. IV evaluates the propensity to suffer damage, resulting from indicators related to building properties. FFI estimates the potential to cause damage, resulting from indicators related to flow parameters. PhVI was applied to a critical section of a small drainage basin in Portugal where flash floods are frequent. Evaluating IV and the intensity of natural hazards is essential in physical vulnerability assessments. This study addresses two problems found in the literature: the lack of flash flood-dedicated physical vulnerability assessments and the difficulties in assembling building properties and the intensity of natural hazards in a vulnerability index defined from indicator-based methodologies. PhVI is a useful tool where damage records are rare or non-existent, allowing the prioritisation of resources and application of local protection measures. This index can be adapted to other study areas and natural hazards, although more research is needed to improve the knowledge on the indicators and weights of IV and FFI.

中文翻译：

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使用基于建筑特性和流量参数的基于指标的方法对山洪暴发进行物理脆弱性评估

本研究使用基于指标的方法重点研究建筑物对山洪暴发的物理脆弱性。提出了一种结合建筑物内在脆弱性 (IV) 和山洪暴发强度 (FFI) 的物理脆弱性指数 (PhVI)。IV 根据与建筑特性相关的指标评估遭受损害的倾向。FFI 根据与流量参数相关的指标估计造成损害的可能性。PhVI 被应用于葡萄牙一个小流域的关键部分，那里经常发生山洪暴发。评估 IV 和自然灾害的强度对于物理脆弱性评估至关重要。本研究解决了文献中发现的两个问题：缺乏专门针对山洪暴发的物理脆弱性评估，以及难以在基于指标的方法定义的脆弱性指数中组合建筑物特性和自然灾害的强度。PhVI 是一种有用的工具，在损坏记录很少或不存在的情况下，可以对资源进行优先排序并应用本地保护措施。该指数可以适用于其他研究领域和自然灾害，但需要更多的研究来提高对 IV 和 FFI 的指标和权重的了解。