Numerical Modeling of Concrete Energy Piles using a Coupled Thermo-Hydro-Mechanical Model
Alitking Anongphouth, Pooneh Maghoul, Marolo C. Alfaro 
In the proceedings of: GeoEdmonton 2018: 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC Session: Shallow Geothermal Energy Exchange
ABSTRACT: Harnessing shallow geothermal energy through the use of energy piles for heating and cooling of buildings has increased in recent years. Therefore, comprehensive understanding of their energy and structural performances is vital for successful applications. This paper aims to investigate the responses of concrete energy piles under thermal and thermo-mechanical loads using a coupled thermo-hydro-mechanical (THM) model. Axisymmetric finite element models were carried out for two case studies of full-scale tests of energy piles. In general, it was found that the numerical models could capture considerably well the behavior of energy piles during cooling and heating cycles in comparison with the field data published in the literature, especially during heating. It was also found that using appropriate pile head restrained conditions is crucial in order to predict the correct behavior of the energy piles.
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Anongphouth, Alitking, Maghoul, Pooneh, Alfaro, Marolo C. (2018) Numerical Modeling of Concrete Energy Piles using a Coupled Thermo-Hydro-Mechanical Model in GEO2018. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Anongphouth_GEO2018_284,
author = {{Anongphouth, Alitking}, {Maghoul, Pooneh}, {Alfaro, Marolo C.}}
title = {Numerical Modeling of Concrete Energy Piles using a Coupled Thermo-Hydro-Mechanical Model}
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Numerical Modeling of Concrete Energy Piles using a Coupled Thermo-Hydro-Mechanical Model}
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }