海洋环境下桩-土相互作用问题的数值解

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振动与冲击 ›› 2009, Vol. 28 ›› Issue (12) : 160-163.

论文

海洋环境下桩-土相互作用问题的数值解

张永利;李杰

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Numerical Solution of Pile-soil Interaction Problem in Ocean

Zhang Yongli;Li Jie

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文章历史 +

摘要

考虑波压力对海床土体应力状态的影响，基于Biot固结理论及虚拟桩技术对海洋桩-土相互作用体系进行了数学建模，并应用FlexPDE对所建立的数学模型进行了数值求解，得到了作用在桩体上的侧向土压力、桩体周围土体有效正应力以及自由场土体相对水平位移和相对垂直位移的分布，这些结果可为海洋桩基的设计与监测提供依据。

Abstract

Considering the influence of wave pressure on the stress state of seabed soil, the pile-soil interaction system in ocean is established mathematically based on Biot consolidation theory and the fictitious pile technique. Then, such a model is solved by use of FlexPDE software, the lateral soil pressure on the pile shaft, the effective normal stress around the pile and the distribution of relative horizontal displacement and vertical displacement in the free soil field are obtained, these results can be referenced in the design and monitoring of offshore pile foundation.