以某滨海地区土体为研究对象,采用改进直剪仪研究土与钢材料接触面的摩擦特性。试验结果表明,法向应力越大剪应力越大,剪应力最大时纯土的剪切位移大于土体-钢材料复合体的剪切位移,剪应力与法向应力近似呈线性关系;一般情况下,土体-钢材料复合体的抗剪强度低于纯土的抗剪强度;随着法向应力的增长,沥青涂层使得剪应力先降低后增加。 With the soil in a coastal area as the research object, the improved direct shear instrument was used to study the frictional characteristics of the contact surface between soil and steel. The experimental results show that the larger the normal stress is, the larger the shear stress is. The shearing displacement of the pure soil is larger than the shear displacement of the soil-steel composite at the maximum shear stress. The shear stress and the normal stress have approximately linear relationship. , The shear strength of soil-steel composite is lower than that of pure soil. As the normal stress increases, the asphalt coating decreases the shear stress and then increases.