So much research has been done showing that bearing capacity of tapered pile in sands is more than the cylindrical pile of the same volume and length. ABAQUS 6.10 Software, which is based on the finite element method, has been used for analyzing the models. In order to verify numerical results, a comparison between numerical and experimental results has been made. Parametric studies have been carried out to determine the influence of contributing factors such as tapered angle and relative density of sand on maximum shear strength and bending moment of piles. In all cases, tapered piles had better performances than the cylindrical ones under lateral loading. Under lateral loading, maximum bending moment occurred in the top one-third of the pile length because cross section of tapered piles were more than the cylindrical piles in this place. Furthermore, the maximum shear force occurred in the pile head, where tapered piles had better material distribution.
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