Effects of wave non-linearity on residual pore pressures in marine sediments

Dong-Sheng Jeng

    Research output: Contribution to journalArticle

    Abstract

    A better understanding of the wave-induced pore pressure accumulations (i.e., residual pore pressure) is a key factor in the analysis of the wave-induced liquefaction in marine sediments. In this paper, the residual mechanism of nonlinear wave-induced pore water pressure accumulation in marine sediments is examined. Unlike previous investigations, the second-order Stokes wave theory is considered in this study. The new model is verified with experimental data and provides a better prediction of pore pressure accumulation than the previous solution with linear wave theory. The parametric study concludes that the influences of wave non-linearity increase as the following parameters increase (i) wave steepness (H/L) and (ii) residual parameter (??). However, an opposite trend is found for (i) wave period (T), (ii) relative water depth (d/L), (iii) seabed thickness (h/L) and (iv) another residual parameter (??). Furthermore, the effect of wave non-linearity becomes more significant in soft seabed (Soil C).
    Original languageEnglish
    Pages (from-to)63-74
    Number of pages12
    JournalOpen Civil Engineering Journal
    Volume2
    DOIs
    Publication statusPublished - 2008

    Keywords

    • Wave non-linearity
    • Residual
    • Pore pressure
    • Marine sediment

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