为了合理地解决地基的变形和稳定问题,必须考虑土的应力应变非线性这一客观存在的特性。为此,我们结合上海某工程,对地面下2～26米的四层粘性土所取“不扰动”土样,用三轴仪做了固结不排水和排水试验,获得了以双曲线函数表达的非线性关系及参数,并用归一化的方法整理了试验资料,最后用司开浦登、贝伦的方法计算了 In order to reasonably solve the problem of deformation and stability of the foundation, the objectively existing characteristic of the stress-strain nonlinearity of the soil must be considered. For this purpose, we combined a Shanghai project to take “non-disturbed” soil samples from four to two meters of cohesive soil beneath the ground, and made a consolidated undrained and drained test with a triaxial apparatus and obtained The nonlinear relationship and parameters of the expression of the curve function, and the test data was compiled using the normalized method. Finally, the calculation method was calculated using the methods of S. Puden and Belem.