Research Article
Jan 1979
Uplift Testing of Model Drilled Shafts in Sand
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VIEW THE REPLYAuthors: Fred H. Kulhawy, M.ASCE, David W. Kozera, AM.ASCE, and James L. Withiam, AM.ASCEAuthor Affiliations
Publication: Journal of the Geotechnical Engineering Division
Volume 105, Issue 1
Abstract
Results of four uplift tests on large-scale cast-in-place straight-sided model drilled shafts in sand are given. The extensive instrumentation and soil placement procedures are described. The results show: (1)A cylindrical shear model describes the tests well; (2)the load-butt deflection response nonlinear, nonlinear and cumulative net compression occurs during loading; and (3)butt deflections at failure are small and consistent. The proposed failure model cosiders an initial at-rest state and active yield during the construction to obtain the failure conditions. Residual capacities are smaller than the ultimate and the percentage decrease increases with increasing initial shear strength.
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Published In
Journal of the Geotechnical Engineering Division
Volume 105 • Issue 1 • January 1979
Pages: 31 - 47
Copyright
© 1979 American Society of Civil Engineers.
History
Published in print: Jan 1979
Published online: Feb 11, 2021
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Affiliations
Fred H. Kulhawy, M.ASCE
Assoc. Prof., School of Civ. and Environmental Engrg., Cornell Univ., Ithaca, N.Y.
David W. Kozera, AM.ASCE
Dist. Engr. for Egypt, Libya, and Saudi Arabia, Raymond International, Inc., El Doki-Giza, Egypt
James L. Withiam, AM.ASCE
Asst. Project Engr., D'Appolonia Consulting Engineers, Inc., Pittsburgh, Pa
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