A new approximation for pore pressure accumulation in marine sediment due to water waves

D.S. Jeng, B.R. Seymour, Jian Li

    Research output: Contribution to journalArticle

    49 Citations (Scopus)

    Abstract

    The residual mechanism of wave-induced pore water pressure accumulation in marine sediments is re-examined. An analytical approximation is derived using a linear relation for pore pressure generation in cyclic loading, and mistakes in previous solutions (Int. J. Numer. Anal. Methods Geomech. 2001; 25:885907; J. Offshore Mech. Arctic Eng. (ASME) 1989; 111(1): 1-11) are corrected. A numerical scheme is then employed to solve the case with a non-linear relation for pore pressure generation. Both analytical and numerical solutions are verified with experimental data (Laboratory and field investigation of wave-sediment interaction. Joseph H. Defrees Hydraulics Laboratory, School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, 1983), and provide a better prediction of pore pressure accumulation than the previous solution (J. Offshore Mech. Arctic Eng. (ASME) 1989; The parametric study concludes that the pore pressure accumulation and use of full non-linear relation of pore pressure become more important under the following conditions: (1) large wave amplitude, (2) longer wave period, (3) shallow water, (4) shallow soil and (5) softer soils with a low consolidation coefficient. Copyright (c) 2006 John Wiley & Sons, Ltd.
    Original languageEnglish
    Pages (from-to)53-69
    JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
    Volume31
    Issue number1
    DOIs
    Publication statusPublished - 2007

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