Research Article
May 1978
Dynamic Response of Pile Foundations in Torsion
Authors: Milos Novak, M.ASCE, and John F. HowellAuthor Affiliations
Publication: Journal of the Geotechnical Engineering Division
Volume 104, Issue 5
Abstract
A theory is presented which facilitates the evaluation of torsional stiffness and damping of piles embedded in horizontally layered soils. This theory employs the matrix stiffness method and is an extension of a continuum approach presented earlier by the writers. Response curves for piled footings may be calculated using the data presented in the figures for stiffness and damping. The theory is compared with field experiments. The results of the experiments show good agreement with theoretical predictions. Dynamic properties of piles are found to be very dependent on the variation of soil properties with depth and on soil material damping. The importance of soil material damping is also demonstrated for shallow rigid footings vibrating in the torsional as well as rocking modes.
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Published In
Journal of the Geotechnical Engineering Division
Volume 104 • Issue 5 • May 1978
Pages: 535 - 552
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: May 1978
Published online: Feb 11, 2021
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Milos Novak, M.ASCE
Prof., Faculty of Engrg. Sci., Univ. of Western Ontario, London, Ontario, Canada
John F. Howell
Lect., Dept. of Bldg. Engrg., School of Architecture and Building Engrg., Univ. of Bath, Bath, England, formerly, Univ. of Western Ontario, London, Ontario, Canada
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.