【摘要】 非饱和土体强度研究一直是一个重难点，为了探寻电阻率与非饱和土抗剪强度之间的联系，通过滤纸法测定盐渍土的吸力结合室内电阻率测试、直剪试验，得到了非饱和盐渍土电阻率随含水率成指数减小关系，电阻率随吸力成指数增加关系；结合土水特征曲线，获得非饱和盐渍土基质吸力与电阻率之间的关系，并基于Fredlund模型提出了以电阻率为自变量的非饱和盐渍土抗剪强度数学模型，为研究非饱和土强度预测提供了理论依据.更多还原

【Abstract】 The research on the strength of unsaturated soil has always been a difficult point. The relationship between the resistivity and the shear strength of unsaturated soil is explored by the indoor resistivity test and direct shear test,and the filter paper method is used to determine the suction of saline soil. The resistivity of unsaturated saline soil decreases exponentially with volumetric water content,and the resistivity increases exponentially with suction. Combined with the soil-water characteristic curve,the relationship between matrix suction and resistivity of unsaturated saline soil is obtained. Based on Fredlund model,a mathematical model of the shear strength of unsaturated saline soil with resistivity as an independent variable is put forward,which provides a theoretical basis for the strength prediction of unsaturated soil.更多还原