在竖向荷载作用下桩-土数值模拟与试验验证

回顾和总结了平面接触问题经典无厚度Goodman界面单元法的主导思想，针对竖向受力承载单桩的Q-S曲线数值分析模型，给出了一种轴对称等参无厚度界面元，以模拟两的相互接触界面，利用所建立的桩-土数值模型，通过模型桩模拟分析，证明模拟分析理论与模型试验相一致，本分析方法可望为实际工作提供一种确定单桩承载力方法或配合其它设计方法合理地确定单桩承载力。

Numerical Modeling of Signle Pile Subjected to the Vertical and Test Proof

The paper has reviewed the method of classical Goodman joint element of zero thickness.With special regard to the interface modeling in the numerical analysis of Q-S curve of single pile subject to the vertical load,a new kind of axisymetric iso-parametric interface element of zero thickness has been derived.The above research has been exercised in the numerical analysis,which was verified by the experimental model analysis on the single pile-soil system.the research work in the paper indicates that the proposed analysis method is provided a simple method to determine load bearing capacity of the single pile for practical problems,or is combined with other design methods easily to determine load bearing capacity of the single pile.