单轴循环荷载下冻结土石混合体动弹性模量和累积塑性应变研究

孙凯, 李志清, 孔佑兴, 周应新, 王双娇

Study of dynamic elastic modulus and cumulative plastic deformation in frozen soil-rock mixtures under uniaxial cyclic loading

Kai SUN, Zhiqing LI, Youxing KONG, Yingxin ZHOU, Shuangjiao WANG

表2 不同条件下稳定变形阶段的斜率和改进Monismith指数模型参数

Table 2 Slope of stable deformation stage under different conditions and parameters of improved Monismith exponential model

含石量/% 温度/℃ 幅值应力/MPa 稳定变形阶段斜率 a b c 30 -5 1.5 1.721×10-4 209.79 -185.57 0.02 2.0 4.718×10-4 202.08 -175.19 0.02 2.5 12.912×10-4 898.82 -862.29 0.01 -10 1.5 7.192×10-5 166.77 -149.79 0.02 2.0 1.620×10-4 35.56 -8.04 0.20 2.5 1.860×10-4 121.56 -53.00 0.11 -15 1.5 1.004×10-5 110.20 -21.30 0.08 2.0 1.085×10-4 74.83 -26.47 0.15 2.5 1.918×10-4 121.55 -53.54 0.11 40 1.5 2.175×10-4 360.34 -333.78 0.02 -5 2.0 5.423×10-4 426.42 -395.60 0.01 2.5 2.530×10-3 60.60 -29.95 0.10 1.5 5.463×10-5 29.97 -1.09 0.46 -10 2.0 5.571×10-5 28.25 -0.26 0.62 2.5 9.337×10-5 163.55 -88.42 1.08 1.5 2.973×10-5 103.02 -22.40 0.07 -15 2.0 2.190×10-5 136.04 -134.90 0.01 2.5 5.812 ×10-5 90.87 -0.60 0.66 50 1.5 6.604×10-5 283.74 -221.85 0.03 -5 2.0 5.423×10-4 61.03 -29.51 0.12 2.5 2.530×10-3 35.49 -0.001 1.39 1.5 9.585×10-5 55.80 -8.59 0.26 -10 2.0 4.683×10-4 36.25 -6.27 0.30 2.5 5.897×10-4 65.49 -34.21 0.11 1.5 2.413×10-5 203.26 -156.83 0.02 -15 2.0 3.247×10-5 64.25 -23.47 0.15 2.5 3.390×10-4 585.67 -337.54 0.07