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End bearing capacity of drilled shafts in sand: a numerical approach

Ahmadi, M. M ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1007/s10706-008-9222-3
  3. Publisher: 2009
  4. Abstract:
  5. In this paper, a modeling procedure is carried out to numerically analyze the end bearing capacity of drilled shafts in sand. The Mohr-Coulomb elastic plastic constitutive law with stress dependent elastic parameters is used for all numerical analyses performed in this study. The numerical results are compared with the available experimental equations. It is seen that numerical results are in good agreement with experimental equations. The variation of the end bearing capacity of drilled shafts versus embedment depth is also studied. Numerical results show that with increase in pile embedment depth, the end bearing capacity increases. However, the rate of increase becomes smaller as the pile embedment depth increases. Also, numerical analyses show that, for equal settlement, the end bearing decreases with increase in the pile diameter. Finally, a sensitivity analysis is performed to obtain the separate effect of each sand parameter on the end bearing capacity of drilled shafts, and the parameters that are most influential are identified. © Springer Science+Business Media B.V. 2008
  6. Keywords:
  7. Drilled shaft ; Embedment depth ; End bearing capacity ; Numerical modeling ; Bearings (structural) ; Numerical analysis ; Piles ; Shaft sinking ; Welds ; Constitutive laws ; Elastic parameters ; Elastic plastics ; Experimental equations ; Modeling procedures ; Mohr coulombs ; Numerical approaches ; Numerical results ; Rate of increase ; Separate effects ; Stress dependents ; Bearing capacity ; Constitutive equation ; Elastoplasticity ; Numerical method ; Numerical model ; Sand ; Sensitivity analysis ; Shaft
  8. Source: Geotechnical and Geological Engineering ; Volume 27, Issue 2 , 2009 , Pages 195-206 ; 09603182 (ISSN)
  9. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-61749092122&doi=10.1007%2fs10706-008-9222-3&partnerID=40&md5=e20ec36fab9cf1ce3c25f32115adf8c1