Experimental Study on Dynamic Shear Strength of Cohesive Soil

It is important to obtain the dynamic shear strength of a soft clay for a seismic design of a foundation builted on soft clay layer. The results of some experimental studies are obtained in the writer's laboratory by the simple shear test apparatus. From these results, it is clear to a dynamic shear strength of clay is not always larger than a static shear strength and it depends on the initial shear stress and a number of pulse.