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| Dynamic Response of the Sandy Seabed to Combined Wave and Current Loading |
| CUI Song-a, b , ZHENG Dong-Sheng-a, YE Guan-Lin-a, b , XIA Xiao-He-b, WANG Jian-Hua-a, b |
| (a.Department of Civil Engineering; b.Center for Marine Geotechnical Engineering Research, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract 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.
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Received: 14 October 2011
Published: 30 October 2012
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