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Wave-induced progressive liquefaction in a poro-elastoplastic seabed: a two-layered model
journal contribution
posted on 2023-05-18, 13:19 authored by Liu, Z, Jeng, D-S, Andrew ChanAndrew Chan, Luan, MIn this study, the prediction model proposed by Sassa et al. (Geotechnique 2001; 51(10):847–857) for the wave-induced progressive liquefaction in marine sediment, based on two-layered inviscid fluid system, is re-examined. An alternative approach with a similar framework of Sassa et al. (Geotechnique 2001; 51(10):847–857) is developed to correct the inappropriate mechanism of wave components used. Then, a two-layered wave model which includes viscous effects is established and applied to describe the progressive nature of wave-induced liquefaction. A comprehensive comparison shows that Sassa's model overestimates the maximum liquefaction depth. It is found that the viscosity of liquefied soil cannot be ignored and the solution for an infinite seabed is not suitable for liquefaction analysis of shallow seabed. A parametric study demonstrates the significant influence of numerous wave and soil characteristics on the liquefaction depth.
History
Publication title
International Journal for Numerical and Analytical Methods in GeomechanicsVolume
33Issue
5Pagination
591-610ISSN
0363-9061Department/School
School of EngineeringPublisher
John Wiley & Sons LtdPlace of publication
The Atrium, Southern Gate, Chichester, England, W Sussex, Po19 8SqRights statement
Copyright 2008 John Wiley & Sons, Ltd.Repository Status
- Restricted