Numerical Study of the Behaviour of a Circular Footing on a Layered Granular Soil Under Vertical and Inclined Loading

Abstract This paper aims to study the behaviour of a circular footing resting on two granular layers, i.e., dense sand layer loose strata, subjected vertical and an inclined loading (?=0°, 10°, 20°, 30°) using finite element (FE) software PLAXIS-3D. The Mohr-Coulomb criterion is employed for analysis model, in which parameters are considered vary significantly; (1) thickness top (dense layer) (2) friction angle (?) both layers. In footing, bearing capacity layered soil profile assessed mechanism punching shear failure following desired area approach. formed has parabolic shape at ultimate load when maximum mobilization force through surface taken into account, otherwise, actual while lower continues greater extent, depending interface load. Bearing pressure decreases as inclination increases with respect vertical, along increasing increases. results compare well data available from literature.