地基非线性沉降计算的原状土切线模量法

Nonlinear settlement computation of the soil foundation with the undisturbed soil tangent modulus method

摘要: 根据原状地基的载荷试验曲线,建立原状土的切线模量与应力水平关系的切线模量方程,对地基不同点根据其应力水平由切线模量方程确定计算点原状土的切线模量,用该切线模量对地基沉降进行分层总和法计算,其特点是切线模量是由原位试验得到的,能反映原状地基土的特点,同时考虑应力水平的影响,反映了土的非线性特点。

Abstract: According to the in-situ plate loading curves,the relation of the tangent modulus of undisturbed soil with the stress level was set up and then the undisturbed soil tangent modulus of different points in soil could be computed based on its stress level.Using this tangent modulus of undisturbed soil in the layer-wise summation method to compute the foundation settlements,it was shown that the results agreed well with the observations.