把匀质地基中的桩、土之间力传递问题当作两种不同介质相互接触的平面应变问题来研究．用边界无法来描述桩、土之间力传递的全过程，并根据桩静载荷试验的Ｐ－Ｓ曲线，反分析地基土体力学参数（压缩模量Ｅｓ和泊松比μ），反分析采用单纯形法．计算表明，这能较好地反映实际工程中桩的工作情况． The problem of force transfer between piles and soils in a homogeneous ground is considered as a plane strain problem in which two different media contact each other. The boundary can not be used to describe the entire process of force transmission between piles and soils. According to the P-S curve of the static load test of piles, the soil mechanical parameters (compression modulus Es and Poisson’s ratio μ) are inversely analyzed. Form method. The calculation shows that this can better reflect the actual work of the pile in the project.