主应力轴旋转条件下冻结黏土的动强度特性

张斌龙, 王大雁, 马巍, 雷乐乐, 周志伟

Dynamic strength characteristics of frozen clay under rotation of principal stress axis

Binlong ZHANG, Dayan WANG, Wei MA, Lele LEI, Zhiwei ZHOU

表2 不同围压下冻结黏土动强度与震动次数关系的拟合系数和确定系数

Table 2 Fitting coefficients and determination coefficients of the relationship between dynamic strength of frozen clay and number of vibrations under different confining pressures

试验名称 围压/kPa α β R2 动三轴试验 400 3 326 -335 0.989 700 3 442 -359 0.984 1 000 3 559 -372 0.990 空心扭剪试验 400 3 320 -530 0.987 700 3 445 -470 0.997 1 000 3 651 -474 0.997