A MODEL STUDY ON COHESIONLESS SLOPE DURING VIBRATION

Abstract

This investigation covers a detailed experimental study of the behaviour of sand embankments having various slopes subjected to dynamic loadings. The deformation in cohesionless embankments starts at a particular value of acceleration. This value is called the yield acceleration. Cohesionless embankment having various slopes were constructed inside a steel tank with glass fitted on one side. This box was mounted on the horizontal shaking table. The table was vibrated at diff-erent accelerations by varying the amplitude of motion, and the deformations were studied at different values of accelerations at different number of cycles. The values of yield acceleration were calculated and the experimental values were compared with them. It was found that the computed values of yield accel-eration lie in closer vicinity with the experimental values in the case of sinusoidal excitation as compared to shock loading. The method for calculating the values of displace-ments has also been suggested.