Experimental Study on Interfacial Shear Strength of Stratified Soils

Based on the laboratory tests carried out with a self-designed device for measuring soil interfacial shear strength,the interfacial shear strength and the interfacial friction of the stratified soils with different clay content,water content and shear rate are studied.The results show that when it comes to the same conditions,between the stratified soils with a lower clay content the interfacial shear strength and the interfacial friction increase with the clay content,whereas between those with a higher clay content the interfacial shear strength and the interfacial friction decrease with the clay content.The interfacial shear strength and the interfacial friction between the stratified soils decrease with the increase of water content.When the shear rate of the stratified soils changes the interfacial shear strength increases with the shear rate,but the interfacial friction varies little.