波流作用下大直径管桩码头动力响应分析

摘要

Through the ANSYS finite element platform, and by using the nonlinear Winkler foundation beam model based on p-y curve, this article studies the dynamic response of large-diameter pipe-pile wharf under wave-current load.By comparing and analyzing the pile-soil interaction model and the embedded point model, it is found that the embedded point model can underestimate the effect of wavecurrent load on the structure;the maximum displacement of pile foundation mud surface being calculated by different wave theory has large difference under different wave periods, and the wave load being calculated by micro-amplitude wave theory as recommended by the Code is low, thus it is recommended to use the Stokes fifth-order wave theory to calculate the wave load in offshore deep sea area.%文章通过ANSYS有限元平台, 采用基于p-y曲线的非线性Winkler地基梁模型研究大直径管桩码头在波流荷载作用下的动力响应.通过对桩土相互作用模型和嵌固点模型进行对比分析, 发现嵌固点模型会低估波流荷载对结构的作用;不同波浪周期下不同波浪理论计算所得的桩基泥面位移最大值差别较大, 根据规范推荐的微幅波理论计算得到的波浪荷载偏低, 建议采用斯托克斯五阶波理论计算外海深水区波浪荷载.