Design, Construction and Initial Performance of Wind Turbine Foundations in Antarctica
James M. Oswell, Murray Mitchell, Gary Chalmers, Hamish Mackinven
In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost ConferenceSession: W2-C
ABSTRACT: Three wind turbines for electrical generation were constructed to lessen the need for imported hydrocarbons at two Antarctic research stations. The subsurface soils consisted of weathered volcanic rock with small to large interbedded ice bodies. The design of the foundations required a strict tolerance on differential settlement, namely 3 mm/m across the foundation element. This paper describes the foundation design and primary design issues. The most important aspect of the foundation design was the estimation of creep settlement over the life of the project. The service loads on the foundation were grouped by load duration, and the corresponding creep settlement estimated. The foundation performance over the initial year after installation is described.
RÉSUMÉ: Trois éoliennes pour la production d'électricité ont été construites afin de réduire les besoins en hydrocarbures importés pour deux stations de recherche en Antarctique. Les terres subsurfaces sont constituées de roches volcaniques altérées renfermant de petites à grandes quantités de glace interstratifiées. La conception des fondations a nécessité une tolérance stricte pour les tassements différentiels de 3 mm/m en travers des fondations. Cet article décrit la conception des fondations et des principaux problèmes de conception. L'aspect le plus important de la conception des fondations a été l'estimation du fluage pour la durée de vie du projet. Les charges sur les fondations ont été regroupés par durée de charge, et le fluage correspondant estimé. Le comportement de la fondation une année après l'installation est décrit. 1 INTRODUCTION
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James M. Oswell; Murray Mitchell; Gary Chalmers; Hamish Mackinven (2010) Design, Construction and Initial Performance of Wind Turbine Foundations in Antarctica in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GEO2010_130,
author = James M. Oswell; Murray Mitchell; Gary Chalmers; Hamish Mackinven,
title = Design, Construction and Initial Performance of Wind Turbine Foundations in Antarctica,
year = 2010
}
title = Design, Construction and Initial Performance of Wind Turbine Foundations in Antarctica,
year = 2010
}