中文摘要：

为研究加速度不对称波浪作用下的海床响应特征,基于Biot多孔弹性介质理论建立了波浪作用下海床响应数学模型,采用水槽实验数据对模型进行了验证。通过引入加速度不对称波浪压力边界条件的计算方法,模拟分析了波浪加速度不对称性对海床内部孔隙水压力、有效应力以及土体液化的影响。结果表明,波浪加速度不对称性会引起海床表层正向孔压幅值的显著衰减,使孔压的空间分布变得偏斜,减小了液化深度和宽度,使海床液化区域变得窄而浅。

英文摘要：

In order to study the influence of wave acceleration asymmetry on seabed response, a numerical model of wave-induced seabed response was developed based on the Biot theory of poroelasticity, and the model was validated against the measured data from flume experiments. A method of calculating wave pressure boundary conditions on the seabed surface, which considers wave acceleration asymmetry, is introduced. Effects of wave acceleration asymmetry on pore water pressures, effective stresses, and soil liquefaction of the seabed are discussed based on numerical simulation. Results show that wave acceleration asymmetry considerably reduces the peak value of the positive pore water pressure in the surface soil layer of the seabed, modifies the spatial distribution pattern of the pore water pressure, and eventually leads to decreases in both the depth and width of seabed liquefaction.