The Medium-Term Evolution of Ground Temperatures Under Raised Buildings in Permafrost
James Oswell, Ron Coutts
In the proceedings of: GeoManitoba 2025: 78th Canadian Geotechnical Conference & 9th Canadian Permafrost ConferenceSession: CPA Foundations
ABSTRACT: Ground temperatures have been measured under two raised buildings in Old Crow Yukon constructed in April 2022. The intent of the ongoing ground temperature monitoring is to assess the performance of an adaptive adfreeze pile system in permafrost and thus to provide advance warning if the foundation ground temperatures begin warming towards a predefined threshold established to initiate foundation stabilization. Based on geothermal modelling completed during detailed design and prior to construction, it is expected that the mean ground temperatures along the length of the piles will cool below pre-construction temperatures for many years before starting to warm in response to applied climate warming effects. This paper presents and compares the initial three years of ground temperature data to the pre-construction ground temperature predictions and provides insights into the likely medium-term performance of the foundation.
RÉSUMÉ: La température du sol a été mesurée sous deux bâtiments surélevés construits en avril 2022 à Old Crow, au Yukon. Cette surveillance continue vise à évaluer la performance d'un système adaptatif de pieux gelés dans le pergélisol et ainsi à fournir un avertissement préalable si la température du sol des fondations commence à se réchauffer vers un seuil prédéfini pour amorcer la stabilisation des fondations. D'après la modélisation géothermique réalisée lors de la conception détaillée et avant la construction, on s'attend à ce que la température moyenne du sol sur toute la longueur des pieux se refroidisse en dessous des températures d'avant la construction pendant de nombreuses années avant de commencer à se réchauffer en réponse aux effets du réchauffement climatique appliqués. Cet article présente et compare les données de température du sol des trois premières années aux prévisions de température du sol avant la construction et fournit un aperçu de la performance probable à moyen terme des fondations.
Submit a Data Update Form for this paper
Please include this code when submitting a data update via other methods: GEO2025_327
Access this article:
Canadian Geotechnical Society members can access to this article, along with all other Canadian Geotechnical Conference proceedings, in the Member Area. Conference proceedings are also available in many libraries.
Cite this article:
Oswell, James, Coutts, Ron (2025) The Medium-Term Evolution of Ground Temperatures Under Raised Buildings in Permafrost in GEO2025. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Oswell_GEO2025_327,
author = {{Oswell, James}, {Coutts, Ron}}
title = {The Medium-Term Evolution of Ground Temperatures Under Raised Buildings in Permafrost }
booktitle = {Proceedings of the 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference}
year = {2025}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {The Medium-Term Evolution of Ground Temperatures Under Raised Buildings in Permafrost }
booktitle = {Proceedings of the 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference}
year = {2025}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
