单桩非线性分析的半解析半数值方法

在分析了桩侧摩阻力和桩周土剪切位移相互关系的基础上 ,提出了一种单桩非线性分析的半解析半分析方法 ,该方法可以分析位于多层介质中单桩的非线性位移。在该方法中 ,采用了两种模型 ,第一种为Randolph提出的解析式 ,该方法可计算在剪切应力作用下土的位移的和桩周土的剪切应力 ,另一个模型为双曲线模型 ,该曲线可用来描述桩侧摩阻力与桩周土的局部剪切位移的非线性关系。该计算方法所得到的计算结果与现场试验结果以及有限元计算结果非常吻合

A SEMI-ANALYTICAL MODEL FOR NON-LINEAR ANALYSIS OF A SINGLE PILE

A semi\|analytical method is presented to determine the non\|linear load\|displacement behavior of single piles embedded in multi\|layered soils.In this analytical approach,two theoretical models were adopted.The first model uses a hyperbolic relationship to describe the non\|linear relationship between the shaft shear stress and localized shear displacement along the pile\|soil interface.The second model is based on the analytical solution presented by Randolph and Wroth to determine the shear stress and displacement fields in soils surrounding the pile shaft.The proposed method was evaluated by comparing it with the results of field pile\|load tests and finite element analyses.