饱和粘土的循环累积应变计算

The calculation of cyclic strain of saturated clay

通过室内动三轴试验,研究了饱和粘土的循环累积应变与循环加载次数及加载频率之间的关系,应用传统的经验公式,对室内动三轴实验所得数据进行了拟合,并根据拟合系数与加载次数的关系进行了二次拟合,最终得到了包含循环加载次数和加载频率两个变量的预测公式,将根据预测公式得到的变形预测值同实验值进行比较,发现可以较好的吻合。

To study the laws of strain increment and the relationship between cyclic strain and load number and load frequency of saturated clay under cyclic load,indoor triaxial dimension tests were done. Then a combination of traditional numerical predicting formula and data got from indoor triaxial dimension test was used to get the coefficients. Finally a new formula having only two variables of load frequency and number of load was fitted with those coefficients. When compared with data got from indoor test,the prediction values got from the new formula fitted well.