Journal of Shanghai Jiao Tong University ›› 2012, Vol. 46 ›› Issue (10): 1553-1557.doi: 10.16183/j.cnki.jsjtu.2012.10.004

Special Issue: 王建华教授学报发文专辑

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Dynamic Response of the Sandy Seabed to Combined Wave and Current Loading

CUI Song1,2, ZHENG Dong-sheng1, YE Guan-lin1,2, XIA Xiao-he2(), WANG Jian -hua1,2   

  1. 1.Department of Civil Engineering
    2.Center for Marine Geotechnical Engineering Research, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2011-10-14 Online:2012-10-01 Published:2012-10-30


Based on two-phase u-p theory for saturated soil, a new constitutive model based on the super/ sub-loading surface and anisotropy was utilized to analyze the dynamic responds of a sandy seabed under the combined wave and current loadings. Firstly, a poro-elastoplastic model for a sandy seabed was established. The mechanics of oscillatory excess pore water pressure in seabed and residual excess pore pressure due to wave/ current were discussed and the liquefaction depth which changes correspondingly was obtained. A comparison between the elastic and elatoplastic sandy seabed's dynamic responds to wave/current loading was also presented.

Key words: two-phase mixture theory, wave/current, sandy seabed, wave parameter, liquefaction depth, elastoplastic model

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