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  • Effects of principal stress rotation on wave-induced soil response in a poro-elastoplastic sandy seabed

    Author(s)
    Zhu, J-F
    Zhao, H-Y
    Jeng, D-S
    Griffith University Author(s)
    Jeng, Dong-Sheng
    Zhao, Huijun
    Year published
    2019
    Metadata
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    Abstract
    In this study, a constitutive model is developed in order to investigate wave–seabed interactions. This model takes into account the impact of principal stress rotation (PSR) and is based on the generalized plasticity theory, in which plastic strain generated by PSR is considered an additional item in the constitutive relationship of soil. The normalized loading direction and plastic flow direction were determined based on the stress tensor invariant. Comparisons between the present model and previous Hollow Cylinder Apparatus tests and geotechnical centrifugal wave tests show good agreement. Numerical results show the effects ...
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    In this study, a constitutive model is developed in order to investigate wave–seabed interactions. This model takes into account the impact of principal stress rotation (PSR) and is based on the generalized plasticity theory, in which plastic strain generated by PSR is considered an additional item in the constitutive relationship of soil. The normalized loading direction and plastic flow direction were determined based on the stress tensor invariant. Comparisons between the present model and previous Hollow Cylinder Apparatus tests and geotechnical centrifugal wave tests show good agreement. Numerical results show the effects of PSR on predictions of liquefaction potential due to: (a) the cumulative impact of plastic strain in the seafloor and (b) the buildup of pore pressure. Parametric study shows that the model parameters, including the wave and seabed parameters, have significant effects on the wave-induced soil liquefaction.
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    Journal Title
    Acta Geotechnica
    DOI
    https://doi.org/10.1007/s11440-019-00809-7
    Note
    This publication has been entered into Griffith Research Online as an Advanced Online Version.
    Subject
    Civil engineering
    Publication URI
    http://hdl.handle.net/10072/385980
    Collection
    • Journal articles

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