Abstract
Moreover, a two-dimensional finite-element model has been developed by incorporating unloading-reloading responses into the monotonic load-transfer curves to define the soil–energy pile interaction during heat exchange operations. In this paper, the development of the finite-element model and information on the full-scale field test are presented along with the validation of the model with the observational data for the application of pure temperature cycles. This study reveals that the proposed model yields satisfactory results in terms of cyclic thermal behavior of energy piles, where the development of appropriate load-transfer curves representing the soil–pile interaction is of paramount importance.
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Acknowledgments
Financial support from the National Science Foundation Grant CMMI-1100752 is greatly appreciated. Berkel and Company Contractors, Mechanical Equipment Sales, GEO-Instruments, REHAU, GRL Engineers, and Pile Dynamics are acknowledged for providing field testing equipment and for their kind support during the field test implementation.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 145 • Issue 1 • January 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Apr 12, 2017
Accepted: Jul 16, 2018
Published online: Nov 13, 2018
Published in print: Jan 1, 2019
Discussion open until: Apr 13, 2019
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