Experimental and analytical studies were conducted on three fullscale precast (PC), prestressed concrete pile to cast-in-place ( CIP) concrete pile-cap subassemblies having typical details used in bridges in seismic regions. Test results of two connections under constant axial load and cyclic lateral forces indicated that despite a shallow embedment of the PC pile end to the pile cap, considerable moment can be resisted by the connection. Results from testing a pile-to-pile-cap connection subjected only to cyclic axial loading revealed adequate tensile and compressive capacities. It is proposed that the moment capacity of the pile-to-pile-cap connection with shallow embedment can be calculated based on the summation of the flexural capacity of the pile end considering only the anchor dowel bars and the resistance of the embedment.
