就桩基承载性状的一个新的理论问题———桩端土强度对桩侧阻力的影响 ,进行了系统的引证和阐述。作者认为 ,桩侧阻力与桩端阻力之间存在相互作用 ,桩侧阻力在桩端附近局部的增强效应是普遍存在的 ,并且随桩端土层强度的提高而提高 ;同时 ,作者还从桩端部位土体随荷载增加位移发展过程的角度 ,对增强效应机理进行了解释 A new theoretical problem of pile-bearing behavior, ie, the effect of pile-end soil strength on pile-side resistance, is systematically cited and elaborated. The authors believe that there is interaction between pile-side resistance and pile-end resistance, and the local reinforcement effect of pile-side resistance near the pile-end is ubiquitous and increases with the increase of soil strength at pile end. At the same time, From the point of view of the development process of the soil in the end part with the increase of load, the mechanism of enhancing effect is explained