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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Flood risk management and adaptation : Effect of availability of levee data in the estimation of the probability of levee failure in case o...
Effect of availability of levee data in the estimation of the probability of levee failure in case of piping
Author : MAURIZIO MAZZOLENI(1), STEFANO BARONTINI(2), ROBERTO RANZI(3) & LUIGIA BRADIMARTE(4)
ABSTRACT
The objective of this study was to demonstrate how different scenarios of data availability along the main river channel,
such as geometrical levee characteristics, can affect the estimation of the probability of levee failure and the consequent
breach location. To achieve this objective, a four steps methodology is proposed and applied to a case study. Firstly, a
reliability function based on the relation between resistance and loading conditions was implemented according to the
chosen failure mechanism. Secondly, fragility curves were assessed using the First Order Reliability Method. Then, the
estimated fragility curves were classified in different fragility classes, according to the main statistical characteristics of the
fragility curves themselves. Finally, different scenarios of data availability, expressed as levee width geometry, were
assumed. The proposed methodology was applied to a reach of the Po river, in Italy, between the gauged sections of
Cremona (upstream) and Borgoforte (downstream). Based on a statistical analysis of historical levee failure records,
piping was considered as main failure mechanism along the study River reach. The results of this study showed how
different availability of levee data can affect the estimation of the probability of failure and the consequent identification of
spatial location of possible breaches.
File Size : 645,148 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Flood risk management and adaptation
Date Published : 13/08/2015
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