Physical Vulnerability Assessment Based on Fluid and Classical Mechanics to Support Cost-Benefit Analysis of Flood Risk Mitigation Strategies

Water

Bruno Mazzorana¹  Laura Levaggi²  Omar Formaggioni¹ 

[1] Department of Hydraulic Engineering—Abteilung Wasserschutzbauten, Autonomous Province of Bolzano, Italy, Cesare Battisti Street 23, Bolzano 39100, Italy;Faculty of Science and Technology, Free University of Bolzano, Universitätsplatz 5, Bolzano 39100, Italy;

关键词: natural hazards;    vulnerability;    flood risk;    risk mitigation;    project evaluation;    European Alps;   

DOI  :  10.3390/w4010196

来源: mdpi

【 摘 要 】

The impacts of flood events that occurred in autumn 2011 in the Italian regions of Liguria and Tuscany revived the engagement of the public decision-maker to enhance the synergy of flood control and land use planning. In this context, the design of efficient flood risk mitigation strategies and their subsequent implementation critically relies on a careful vulnerability analysis of the fixed and mobile elements exposed to flood hazard. In this paper we develop computation schemes enabling dynamic vulnerability and risk analyses for a broad typological variety of elements at risk. To show their applicability, a series of prime examples are discussed in detail, e.g. a bridge deck impacted by the flood and a car, first displaced and subsequently exposed to collision with fixed objects. We hold the view that it is essential that the derivation of the computational schemes to assess the vulnerability of endangered objects should be based on classical and fluid mechanics. In such a way, we aim to complement from a methodological perspective the existing, mainly empirical, vulnerability and risk assessment approaches and to support the design of effective flood risk mitigation strategies by defusing the main criticalities within the systems prone to flood risk.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.