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A Simple Limit Equilibrium Approach for Calculation of Ultimate Bearing Capacity of Shallow Foundations on Two-Layered Granular Soils

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Abstract

The bearing capacity of shallow foundations in a non-homogeneous soil profile has been a challenging task in geotechnical engineering. In this paper, a limit equilibrium method is used for calculating bearing capacity factors of shallow foundations constructed on a two-layered granular soil profile. The main objective has been to determine the ultimate bearing capacity computed from equivalent bearing capacity factors Nq and Nγ and comparing that with numerical analysis using finite element methods. It will be shown that the data obtained form the developed method are well comparable with those obtained from FE approach, specially when the difference between shear strength parameters of layers is low which is a practical case for sedimentary soil profiles and also for artificially compacted soils. A computer program has been developed to investigate the influence of various parameters on bearing capacity factors.

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Authors and Affiliations

  1. Civil Engineering Department, K. N. Toosi University of Technology, Tehran, Iran

    Mahmoud Ghazavi & Amir Hossein Eghbali

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  1. Mahmoud Ghazavi
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  2. Amir Hossein Eghbali
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Correspondence to Mahmoud Ghazavi.

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Ghazavi, M., Eghbali, A.H. A Simple Limit Equilibrium Approach for Calculation of Ultimate Bearing Capacity of Shallow Foundations on Two-Layered Granular Soils. Geotech Geol Eng 26, 535–542 (2008). https://doi.org/10.1007/s10706-008-9187-2

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  • DOI: https://doi.org/10.1007/s10706-008-9187-2

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