عنوان مقاله [English]
Traditional bearing capacity theories for determining the ultimate bearing capacity of shallow foundations, assume that the bearing stratum is homogenous and infinite. However this is not true in all cases and it is possible to encounter a layered soil that has different shear strength parameters. Effective depth and shape of shear zone is the important consideration in layered soils. In this paper numerical modeling of plate load tests (PLT) in layered granular soil in two cases of eccentrically and vertically loaded foundation has been studied by ABAQUS software. The load bearing capacity that was obtained from experimental, numerical modeling and classic relations will be compered. For strip or circular footing on two-layered soils, the bearing capacity usually depends on the ratio of thickness of the top layer (H) to the footing width or diameter (B). By comparing the theoretical and experimental bearing capacity, the modification of bearing capacity parameter is necessary. According to the result the general equation for estimation of bearing capacity in layered soils obtained.