Improving Semianalytical Predictions of Long-Term Basement Heave in Over-Consolidated Clay
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 148, Issue 2
Abstract
A series of geotechnical centrifuge tests to investigate the long-term heave behavior of basements in over-consolidated clay was performed, and the profiles of the slab displacement and underslab pressure were measured simultaneously. The same prototypes were simulated using Plaxis 2D with the clay stratum represented by the small-strain hardening soil model. The results were compared, and good agreement was found in terms of the profiles of slab-soil contact pressures. The data indicated that existing semianalytical methods of long-term heave predictions can be improved by assuming a quadratic distribution of slab-soil contact pressure. Example calculations for the relaxation ratio method and the relative stiffness method are presented.
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Data Availability Statement
All data, models, or code generated or used during the study are available in the University of Cambridge Repository at https://doi.org/10.17863/CAM.66654 in accordance with funder data retention policies.
Acknowledgments
The authors thank technical staff Mr. J. A. Chandler, Mr. K. D. Pether, Mr. M. Smith, and Mr. C. J. McGinnie for facilitating the experiments and Mr. A. Locke, Mr. V. C. Walford, Mr. K. Miller, Mr. S. A. Solera, Professor A. S. O’Brien, and Dr. W. Kesse for their advice on current design and construction practices. The authors acknowledge the EPSRC Centre for Doctoral Training in Future Infrastructure and Built Environment at the University of Cambridge (EPSRC Grant Reference No. EP/L016095/1) and Mott MacDonald Geotechnics for supporting this research project.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 148 • Issue 2 • February 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jun 17, 2020
Accepted: Sep 17, 2021
Published online: Nov 24, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 24, 2022
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Cited by
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