EXPERIMENTAL AND NUMERICAL STUDY ON GEOMATERIAL BEHAVIOR OF UPLIFTING BELLED PILE UNDER LOW CONFINING PRESSURE

Abstract

Experimental testing revealed that the ground created the cone-shaped resisting area against the uplift of the belled pile. Then, the relationship between soil dilatancy characteristics and the uplifting capacity was investigated by using the numerical analysis which can simulate large deformations. The series of numerical simulation resulted in that the positive dilatancy under low confining pressure induced the truncated coneshaped resisting area in ground which increased the uplifting capacity.