Date of Publication :14th June 2019

Abstract: A piled raft foundation is a widely adopted concept in which the total load coming from the superstructure is partly shared by the raft through contact with soil and the remaining load is shared by piles through skin friction. Piled raft foundations are usually applied to support heavy structures such as high-rise buildings, bridges, wind-turbine towers and offshore structures, etc. When these structures are subjected to large horizontal loads caused by wind loads, water wave loads or earth quakes, a conventional approach to increase the horizontal resistance is the use of batter piles in addition to vertical piles. Experimental work was carried out in the laboratory on piled raft which consist of 9 piles, to investigate the vertical and lateral response of batter piled raft. Axial load test and lateral load test were conducted on piled raft with different batter angle for batter piles. Test were conducted on two relative densities (RD) such as 30% RD ( loose condition) and 50% RD (medium dense condition). It is found from the experiments that batter piles have positive effects on the behaviours of the raft foundations such as increase of the load carrying capacity and decrease of the displacements caused by the vertical and lateral loading

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