中文摘要：

针对具有不同初始含水率的2种重塑黏土进行三轴固结不排水剪切试验（CU试验）,得到了不同初始含水率重塑土三轴不排水剪切试验过程中孔隙水压力与轴向应变的关系曲线.通过对孔隙水压力分别随平均正应力和偏应力的变化规律进行深入研究,发现不同初始含水率重塑土归一化孔压u/p＇0与有效应力比η之间均呈很好的线性关系.同时采用Balasubramaniam提出的归一化方法能够很好地将给定初始含水率不同固结压力下的孔压曲线进行归一化;而初始含水率与u/p0-η曲线的斜率C之间则呈近似线性减小的关系.最终基于Wood提出的孔压公式,提出了考虑初始含水率影响的孔压系数a的确定方法.

英文摘要：

Based on a series of isotropically consolidated undrained triaxial compression shear tests（CU tests）,the pore pressure-axial strain curves of reconstituted clays with different initial water contents are obtained.A strong linear correlation between normalized pore pressure u/p′ 0 and effective stress ratio η is found by studying on the relationship between pore pressure and mean pressure or deviator pressure.Furthermore,the normalized method proposed by Balasubramaniam is used in the clay,and the slope of u/p0-η curve shows a linear decrease tendency with initial water content.Finally,using the equation of pore pressure proposed by Wood,a method for determining the pore pressure parameter a considering the influence of initial water content is suggested.