In this paper a II level probabilistic analysis of the evolution of beach nourishments has been proposed. Such an analysis gives an approximate value of the failure probability with little calculation time. The limit state function is defined assuming that the nourishment must guarantee an adequate beach dimension. The analytical formulation proposed by Dean and its extension to curvilinear contours by Boccotti have been used to evaluate the limit state function. A comparison of the two formulations has been first performed. The results have shown that Dean's model is more severe than the Boccotti's one except for high deep-water wave steepness and small ratio between the depth of the bearing berm of the nourishment and the offshore wave length.

Beach nourishment evolution: analitycal and probabilistic analysis

CALABRESE, MARIO;
2001

Abstract

In this paper a II level probabilistic analysis of the evolution of beach nourishments has been proposed. Such an analysis gives an approximate value of the failure probability with little calculation time. The limit state function is defined assuming that the nourishment must guarantee an adequate beach dimension. The analytical formulation proposed by Dean and its extension to curvilinear contours by Boccotti have been used to evaluate the limit state function. A comparison of the two formulations has been first performed. The results have shown that Dean's model is more severe than the Boccotti's one except for high deep-water wave steepness and small ratio between the depth of the bearing berm of the nourishment and the offshore wave length.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/181093
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