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通过三轴压缩试验条件下冻结粘性土变形分析，发现冻结粘性土的体应变明显不为零，随荷 载的变化而变化，加荷初期试样体积收缩，但随着荷载的进一步增大而变为膨胀；轴向应变则随偏 应力的增大而增大，表现出明显的粘塑性特征，应力－应变曲线上的准弹性段、屈服处和粘塑性段刚 好分别对应体变曲线上的体缩段、体缩量最大处和膨胀段，根据冻结粘性土的变形曲线，给出了考 虑体变形的应力－应变关系。
Through the deformation analysis of frozen clay under triaxial compression test, it is found that the bulk strain of frozen clay is obviously not zero, which changes with the change of load. The volume of sample shrinks at the initial stage of loading, but decreases with the increase of load While the axial strain increases with the increase of the deviatoric stress and shows obvious viscoplastic characteristics. The quasi-elastic section, yield point and viscoplastic section of the stress-strain curve correspond to the body Shrinkage, maximum shrinkage and expansion, according to the deformation curve of frozen clay, gives the stress-strain relationship considering the deformation of the body.