Combined wave-current induced instantaneous liquefaction of a sandy seabed
Accurate prediction for the liquefaction depth of a porous seabed is crucial to the design of shallow foundations; nevertheless most previous studies are predominantly limited to wave-only conditions. In this study, the combined wave-current induced instantaneous liquefaction of a sandy seabed is in...
Published in: | Volume 1: Offshore Technology; Offshore Geotechnics |
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Main Authors: | , , , |
Format: | Other/Unknown Material |
Language: | English |
Published: |
2019
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Subjects: | |
Online Access: | http://dspace.imech.ac.cn/handle/311007/85116 https://doi.org/10.1115/OMAE2019-96655 |
Summary: | Accurate prediction for the liquefaction depth of a porous seabed is crucial to the design of shallow foundations; nevertheless most previous studies are predominantly limited to wave-only conditions. In this study, the combined wave-current induced instantaneous liquefaction of a sandy seabed is investigated analytically. The explicit expression of liquefaction depth under combined wave-current loading condition is derived, which can converge to that under the linear wave condition when the current velocity approaches zero. Parametric study indicates that the effects of imposing a current onto progressive waves on the distribution of excess pore pressures and the corresponding liquefaction depth are unneglectable, especially for the opposite current conditions. Copyright © 2019 ASME. |
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