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利用ＣＴ手段观测分析了冻土三轴压缩蠕变过程中结构的变化情况，结果表明，蠕变过程中围压的作用抑制了冻土体中裂隙的增长，加强了结构的强化作用，致使冻土在不稳定蠕变阶段和稳定蠕变阶段表现出结构强化占优势。随着非弹性变形的进一步累积，如果结构强化仍然占优势，则变形具有衰减特征；如果弱化作用克服了围压效应占主导，则发展以破坏而告终的非衰减蠕变。破坏首先发生在样品低密段的薄弱区，在样品表面形成拉伸裂缝，然后向内扩展最终导致整体结构的破坏
The change of structure during the triaxial compression creep process of frozen soils was observed and analyzed by CT. The results show that the confining pressure in the creep process suppresses the growth of cracks in the frozen soils, strengthens the strengthening effect of the structure, Soil shows structural strengthening predominance in unstable creep and stable creep phases. As the inelastic deformation further accumulates, the deformation has an attenuation characteristic if the structural strengthening is still dominant, and if the weakening effect overcomes the effects of the confining pressure effect, the non-decaying creep that ends up being destroyed is developed. Vandalism occurs first in the weak regions of the sample in the low-density section, forming tensile cracks in the sample surface, and then inwards expanding eventually leading to disruption of the overall structure