Analytical And Numerical Methods For Prediction Of The Bearing Capacity Of Shallow Foundations In Unsaturated Soils

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Analytical And Numerical Methods For Prediction Of The Bearing Capacity Of Shallow Foundations In Unsaturated Soils
Sai K. Vanapalli1, Won-Taek Oh
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Resumo:

Bearing capacity of saturated soils can be estimated using effective or total stress approaches extending the concepts proposed by Terzaghi (1943) and Skempton (1948), respectively. Recent studies have shown that similar approaches (i.e., Modified Effective Stress Approach, MESA and Modified Total Stress Approach, MTSA) can be used for interpretation and prediction of the bearing capacity of unsaturated soils by considering the influence of matric suction. However, comprehensive discussion for the application of the MESA and the MTSA in geotechnical engineering practice applications is lacking in the literature. For this reason, in this state-of-the-art paper, the background associated with the MESA and MTSA is first introduced. The analytical and numerical methods available for the prediction of the bearing capacity of unsaturated soils from the literature are revisited. The various available methods are explained by categorizing them into two groups: MESA and MTSA along with their applications using examples. The focus of this state-of-the-art paper is directed towards not only for providing tools for rational understanding but also for better prediction of the bearing capacity of unsaturated soils for extending them in geotechnical engineering practice applications.

Referência: 

Volume 44, N. 3, Special Issue: Unsaturated Soils (Invited Editors: T.M.P. Campos, F.A.M. Marinho, G.F.N. Gitirana Jr.), July-September, 2021
Tipo: Revista Soils and Rocks