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本文根据桩侧桩端间桩土相互作用的机理、以及桩顶沉降和桩身变形、桩端沉降的相互关系，提出了一种划分摩阻力、端承力和摩阻力产生的桩身变形、端承力产生的桩身变形、桩端沉降的方法。该方法具有如下的优点：能划分任一级荷载下的桩身变形和沉降值，摩阻力和端承力的大小。文中还将该方法和现有方法求解的结果以及实测结果进行了对比、分析。在对桩的Ｐ～Ｓ曲线进行分析的基础上，将Ｐ～Ｓ曲线划分为四个阶段，该四个阶段以作图法进行了论证。
In this paper, according to the mechanism of pile-soil interaction between pile sides, the settlement of the pile top and the deformation of the pile body and the settlement of the pile end, a new method is proposed to divide the pile deformation caused by frictional resistance, end bearing and frictional resistance. The pile deformation caused by the end bearing force and the settlement method at the end of the pile. This method has the following advantages: it can divide the pile deformation and settlement value, friction resistance and end bearing strength under any load. The paper also compares and analyzes the results obtained by the method and the existing methods and the measured results. Based on the analysis of the P-S curve of the pile, the P-S curve is divided into four stages. The four stages are demonstrated by the mapping method.