Nondimensional Solutions for Laterally Loaded Piles in Sand Considering Nonlinear Soil–Pile Interactions
Publication: International Journal of Geomechanics
Volume 18, Issue 7
Abstract
This article presents nondimensional solutions for laterally loaded piles in sand considering nonlinear soil–pile interactions. A nonlinear elastoplastic p–y model, termed the H-model, is introduced, and its ability to model the responses of laterally loaded piles in sand is demonstrated. Nondimensional forms of both the H-model and the governing equation for laterally loaded piles are then derived, after which the nondimensional responses of free-head piles subject to lateral forces and moments and that of fixed-head piles subject to lateral forces are evaluated using the finite-element method. It is found that (1) the pile responses are significantly affected by the nondimensional pile length; and (2) using nonlinear soil–pile interaction, the critical length of the pile increases with increasing normalized displacement and is noticeably larger than that utilizing linear soil–pile interaction. The quantitative nondimensional relationship between force and the moment responses of free- and fixed-head long piles is also obtained. Two design curves, normalized force against normalized displacement and normalized force against maximum normalized moment, are presented. Illustrative examples are given to show the step-by-step procedure for how the curves could be used in practice to estimate the behavior of piles.
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Acknowledgments
The authors acknowledge the financial support provided by the National Natural Science Foundation of China under Grants 51478273 and 51178272.
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Published In
International Journal of Geomechanics
Volume 18 • Issue 7 • July 2018
Copyright
© 2018 American Society of Civil Engineers.
History
Received: Apr 27, 2017
Accepted: Feb 1, 2018
Published online: May 8, 2018
Published in print: Jul 1, 2018
Discussion open until: Oct 8, 2018
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