液化
地质学
海床
岩土工程
电流(流体)
海底管道
孔隙水压力
土壤液化
波浪荷载
作者
Lijing Yang,Changfei Li,Jun-Qin Wang,Xueyun Gao
出处
期刊:ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering
日期:2019-11-11
标识
DOI:10.1115/omae2019-96655
摘要
Abstract 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.
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