Numerical Analysis on Cnoidal Wave Induced Response of Porous Seabed with Definite Thickness

doi:10.1007/s12204-013-1446-6

Abstract

Abstract: Severe water waves can induce seabed liquefaction and do harm to marine structures. Dynamic response of seabed with definite thickness induced by cnoidal water waves is investigated numerically. Biot’s consolidation equations are employed to model the seabed response. Parametric studies are carried out to examine the influence of the air content in the pore water and the soil hydraulic conductivity. It has been shown that the air content and soil hydraulic conductivity can significantly affect the pore pressure in seabed. An increase of air content and/or a decrease of soil hydraulic conductivity can change the pore pressure gradient sharply.

Key words: cnoidal water wave| Biot's consolidation equation| seabed| pore pressure

摘要： Severe water waves can induce seabed liquefaction and do harm to marine structures. Dynamic response of seabed with definite thickness induced by cnoidal water waves is investigated numerically. Biot’s consolidation equations are employed to model the seabed response. Parametric studies are carried out to examine the influence of the air content in the pore water and the soil hydraulic conductivity. It has been shown that the air content and soil hydraulic conductivity can significantly affect the pore pressure in seabed. An increase of air content and/or a decrease of soil hydraulic conductivity can change the pore pressure gradient sharply.

关键词: cnoidal water wave| Biot's consolidation equation| seabed| pore pressure

CLC Number:

P 753

XU Yun-feng (徐云峰), XIA Xiao-he* (夏小和), WANG Jian-hua (王建华), CHEN Jin-jian (陈锦剑). Numerical Analysis on Cnoidal Wave Induced Response of Porous Seabed with Definite Thickness[J]. Journal of shanghai Jiaotong University (Science), 2013, 18(6): 650-654.

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