Author(s): Francesco Salvatore Liguori; Giovanna Capparelli; Antonio Madeo; Pasquale Versace
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Abstract: The frequency and the extension of high intensity flood events are expected to increase in the nearest future because of to the intensification of the hydrological cycle caused by the climate change (Tabari (2020) ). Therefore, the development of risk assessment strategies, aimed at quantifying the flood risk of large areas is a research topic of great relevance. Masonry buildings represent a structural typology that could be highly vulnerable to the action of high intensity floods. In fact, the masonry walls generally lack of out-of-plane strength and, if subject to high intensity hydraulic forces (Marvi (2020) ), can undergo severe damage or collapses that can compromise the overall stability of the structure. In order to cope with this problem, in this work we propose a rapid tool for the risk assessment of masonry structures subject to floods (Capparelli et al. (2023) ). The proposed strategy is based on the estimation of a risk class, through the calculation of a simplified damage level (DL) that is a function of two indices, namely a Hazard Index (HI) and a Vulnerability Index (VI). Both indices are linear combinations of scores and weights assigned to some indicators of the event, for HI, and of the intrinsic structural features (VI). One of the key aspects of the proposed approach resides in its calibration that is carried out by adopting the results of numerical simulations.
Year: 2024