复合筒型基础周围土体在波浪作用下的动力响应

Wave-induced seabed dynamic response around composite bucket foundation

利用Open FOAM模拟数值波浪水槽,将复合筒型基础周围海床受到的波压力作为初始条件输入有限元软件ABAQUS,建立波浪作用下海床动力响应模型。数值模拟结果与实验结果及解析解吻合较好。运用此模型进行了复合筒型基础周围海床在行进波作用下动力响应研究和土体特性对波浪作用下海床动力响应的影响分析,结果表明,海床孔隙水压衰减速度随着海床渗透系数和弹性模量的增加而增大。

Based on Open FOAM,we simulated numerical wave flume,offered wave pressure of seabed around the composite bucket foundation as initial conditions for ABAQUS,and established an integrated model of wave-induced seabed dynamic response.The numerical results are in good agreement with experimental data and analytical results.Dynamic response around composite bucket foundation under progressing wave condition is analyzed and the effects of soil properties on the dynamic response are investigated by the model.The results show that attenuation velocity of pore water pressure increases with the increasing of seabed permeability coefficient and elastic modulus.