PHYSICAL MODELING OF SAND LIQUEFACTION UNDER WAVE BREAKING ON A VERTICAL WALL

Hervé Michallet, Valerie Rameliarison, Celine Berni, Maxime Bergonzoli, Jean-Marc Barnoud, Eric Barthelemy

Abstract


The wave induced liquefaction at a coastal structure is studied. Experiments in a glass-wall flume filled with a partially saturated bed of light-weight sediment are presented. Single wave loadings are simulated. For large enough wave height conditions an excess pore pressure is recorded within the soil and a liquefaction threshold is reached. Velocity fields obtained from video recordings display large zones of the bed that behave as a fluid. Phases of soil compaction and dilatancy are identified.

Keywords


soil fluidization; pore pressure; momentary liquefaction; gas content

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