Effect of Recent Load History on Laterally Loaded Piles in Normally Consolidated Clay
Publication: International Journal of Geomechanics
Volume 7, Issue 4
Abstract
The response of piles subjected to lateral loading (along a single line of action) has been substantially investigated in the past. However, little attention has been devoted to studying how a change in the lateral load direction (say, from east–west to north–south) may affect the overall response. This paper describes a Winkler type of soil–pile interaction model that allows coupling between the two perpendicular directions in a systematic way, by adopting local yield surfaces along the pile. A parametric study is presented for a range of pile lengths and cross sections, applied loads, and changes in direction from previous loadings. An analogy is shown to exist between the response of the pile to changes in the direction of lateral loads and the well-known elementary constitutive phenomenon of the recent stress history. As is commonly assumed in practice the model shows that the direction of the resultant pile response does not have a large impact on the load carrying capacity of the system. However, changes in the lateral load directions alter the global stiffness response, and this could potentially play a significant role in the serviceability design.
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Acknowledgments
The work described here forms part of the activities of the Special Research Centre for Offshore Foundation Systems, established and supported under the Australian Research Council’s Research Centres Program. Further, support for the second writer from the Australian Research Council through the ARC Discovery grant scheme (UNSPECIFIEDDP0558406) is gratefully acknowledged.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 7 • Issue 4 • July 2007
Pages: 277 - 286
Copyright
© 2007 ASCE.
History
Received: Feb 18, 2006
Accepted: Sep 22, 2006
Published online: Jul 1, 2007
Published in print: Jul 2007
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