Bearing Capacity Evaluation of Footing on a Layered Soil using ABAQUS
Received Date: Feb 22, 2015 / Accepted Date: Feb 26, 2015 / Published Date: Mar 06, 2015
In this paper, finite element method (FEM) is applied to calculate bearing capacity of a strip footing on one-layer and two-layer soil. Computations are carried out using commercial finite element software, ABAQUS to assess effect of various geotechnical and geometric parameters on soil failure mechanism under the footing. Soil profile contains two soil types including sand and clay. Soil behaviour is represented by the elasto-plastic Drucker-Prager model and footing material is assumed isotropic and linear elastic. For a homogenous soil profile, the effect of soil properties such as dilation angel and initial condition as well as footing roughness are assessed on soil failure mechanism under the footing. For this case, the bearing capacity is also obtained which has a good agreement with Terzaghi’s calculation. For a layered soil, soft-over-strong soil, the effect of layer thickness, soil shear strength and material property on bearing capacity value and failure mechanism is studied. It is concluded that the bearing capacity of footing decreases as the height of clayey soil increases whilst the displacement under footing increases. However, the stronger bottom layer does not affect ultimate bearing capacity value of footing and displacement of footing after some thickness of clayey soil on top.
Keywords: Bearing capacity; FEM; strip footing; one-layer soil; two-layer soil
Citation: Mosadegh A, Nikraz H (2015) Bearing Capacity Evaluation of Footing on a Layered-Soil using ABAQUS. J Earth Sci Clim Change 6: 264. Doi: 10.4172/2157-7617.1000264
Copyright: ©2015 Mosadegh A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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