In this paper, a two-dimensional (2D) porous model is established to investigate the predication of the wave-induced pore pressure accumulations in marine sediments. In the new model, the VARANS equation is used as the governing equation for the wave motion, while the Biot’s consolidation theory is used for porous seabed. The present model is verified with the previous experimental data  and provides a better prediction of pore pressure accumulation than the previous solution . With the new model, a 2D liquefied zone is formed at the beginning of the process, and then gradually move down. After a certain wave cycle (for example, 30 wave cycles in the numerical example), the liquefaction zone will become one-dimensional (1D) and continuously move down and eventually approaches to a constant. Numerical results also conclude the maximum liquefaction depth increases as wave height increases and in shallow water.
- Ocean, Offshore and Arctic Engineering Division
Two-Dimensional Model for Wave-Induced Pore Pressure Accumulation in Marine Sediments
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Zhao, H, Jeng, D, Zhang, H, & Zhang, J. "Two-Dimensional Model for Wave-Induced Pore Pressure Accumulation in Marine Sediments." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Polar and Arctic Sciences and Technology; Offshore Geotechnics; Petroleum Technology Symposium. Nantes, France. June 9–14, 2013. V006T10A012. ASME. https://doi.org/10.1115/OMAE2013-10223
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