EPS改良膨胀土孔隙特征与滞回曲线形态

庄心善,周睦凯,周荣,陶高梁

Pore characteristics and hysteresis curve morphology of expansive soil improved by EPS

Xin-shan ZHUANG,Mu-kai ZHOU,Rong ZHOU,Gao-liang TAO

表 4 滞回曲线特征参量的拟合参数

Tab.4 Fitting parameters of hysteretic curve morphological characteristic parameters

特征参量曲线 土样 A B C R2 k-εd 原膨胀土 −72.378 395.765 −0.125 0.9935 k-εd 改良土 −18.109 215.491 −0.251 0.9985 S-εd 原膨胀土 −0.873 833.168 1.919 0.9996 S-εd 改良土 −1.224 820.726 2.205 0.9993 εp-εd 原膨胀土 −2.387 0.239 1.758 0.9997 εp-εd 改良土 2.976 0.413 2.016 0.9993 α-εd 原膨胀土 −2.763 2.869 0.001 0.7689 α-εd 改良土 −0.021 0.125 0.245 0.9936