冻砂土损伤本构模型及应用研究

STUDY AND APPLICATION OF EROZEN SOIL DAMAGE CONSTITUTIVE MODEL

采用单轴压缩的试验方法对深部冻砂土的损伤特性进行系统的试验研究,得出深部冻土在受荷条件下的应力-应变曲线。应用损伤理论推导出冻土本构方程,并推导出考虑土体损伤的冻结壁应力场计算公式。从理论上更加完善,可以为深井冻结壁计算提供参考。

Using the single axle compression testing on the study.of the depth frozen soil damage characteristic, stress - strain curves of the depth frozen soil under the loading condition are obtained. The frozen soil constitutive equation is infered using the damage theory and considering soil body damage the freeze wall stress field formula was infered. The damage frozen wall formula theoretically is more perfecter, and provids a refer- ence for the deep shaft frozen wall computation.