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利用有限元方法建立了软土地基中摩擦型桩基础桩土相互作用的轴对称模型,在考虑桩与土摩擦作用的基础上,分析了摩擦桩随桩长变化的承载力特性、摩擦桩桩侧摩阻随桩长的变化特征以及桩身沉降对桩周土体塑性变形的影响。在对软土地基摩擦桩的承载特性进行深入研究的基础上,提出了工程实际中摩擦桩设计合理桩长的概念,为工程师进行桩基方案设计提供了理论依据。
The finite element method is used to establish the axisymmetric model of pile-soil interaction of frictional pile foundation in soft soil foundation. Based on the frictional effect between pile and soil, the bearing capacity of friction pile with pile length variation is analyzed. Variation of Side Friction Resistance with Pile Length and Effect of Pile Settlement on Soil Plastic Deformation of Pile Around. Based on the deep research on the bearing characteristics of the friction pile in soft soil foundation, the concept of reasonable pile length for the design of friction pile in engineering practice is put forward, which provides a theoretical basis for engineers to design the pile foundation plan.