Coupled Macroelement Model of Soil-Structure Interaction in Deep Foundations
Publication: Journal of Engineering Mechanics
Volume 133, Issue 12
Abstract
The principal objective of this study is the development and calibration of a macroelement model for soil-pile interaction under simultaneously applied lateral and vertical loads. Herein, we focus on cast-in-drilled-hole single piles that are partially or fully embedded in soil, which are frequently used as support structures in highway construction. The model is calibrated and verified using primarily three-dimensional finite-element simulations and, whenever possible, with experimental data obtained from open literature. These data indicate that lateral loads significantly affect the vertical response of single piles, whereas the converse coupling is negligible. The proposed macroelement model is capable of mimicking this phenomenon. As such, it is a computationally efficient alternative to finite-element analyses, and is feasible to be utilized in practical applications.
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Acknowledgments
This study was funded by Caltrans under Contract No. UNSPECIFIED59A0247. The writers would like to thank Caltrans engineers C. R. Whitten and A. Shamsabadi, as well as UCLA Professors J. W. Wallace and J. P. Stewart for their comments and criticisms that helped improve the manuscript. The second writer would also like to acknowledge financial support provided by the EarthquakeEngineering Research Center’s Program of the National Science Foundation, under Award No. NSFEEC-9701568 through the Pacific Earthquake Engineering Research Center. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the writer(s) and do not necessarily reflect those of Caltrans or the National Science Foundation.
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© 2007 ASCE.
History
Received: Jul 27, 2006
Accepted: Nov 16, 2006
Published online: Dec 1, 2007
Published in print: Dec 2007
Notes
Note. Associate Editor: George Z. Voyiadjis
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