Numerical analysis of frost penetration around footings of power mills in subarctic conditions
The potential for establishing wind power farms in the subarctic areas is high due to the combination of large available areas and few conflicting interests. In subarctic climate frost and thaw are major principal design aspects. In foundation work the major impact of frost action is at the outer pe...
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Luleå tekniska universitet, Geoteknologi
2009
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ftluleatu:oai:DiVA.org:ltu-32330 2023-05-15T14:23:40+02:00 Numerical analysis of frost penetration around footings of power mills in subarctic conditions Edeskär, Tommy Helander, Anders Knutsson, Sven 2009 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-32330 eng eng Luleå tekniska universitet, Geoteknologi SWECO, Östersund Proceedings of the 20th International Conference on Port and Ocean Engineering under Arctic Conditions : June 9-12, 2009, Luleå, Sweden http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-32330 Local 6cbce0e0-885c-11de-8da0-000ea68e967b info:eu-repo/semantics/openAccess Geotechnical Engineering Geoteknik Conference paper info:eu-repo/semantics/conferenceObject text 2009 ftluleatu 2022-10-25T20:54:00Z The potential for establishing wind power farms in the subarctic areas is high due to the combination of large available areas and few conflicting interests. In subarctic climate frost and thaw are major principal design aspects. In foundation work the major impact of frost action is at the outer peripheries of the foundation. Therefore most analysis work and prevention actions such as insulation around the foundation are concentrated to this part of the structure. The gravity foundations of wind power plants are often constructed as a reinforced concrete monolite. In the centre of the footing a steel cage is attached for anchoring the wind mill tower. This steel cage ends close to the sub-grade and can due to considerably higher thermal conductivity, compared to the concrete structure, transport a lot more heat. By FEM analysis, the frost penetration around, and under two typical wind-power foundations have been analyzed for different climate conditions in Sweden. In addition, different soil types have also been used. The result shows that the frost penetration in the centre of the foundation needs to be considered. Further it is shown that it is larger in the centre than compared to the periphery. Godkänd; 2009; Bibliografisk uppgift: USB; 20090814 (svek) Conference Object Arctic Subarctic Luleå University of Technology Publications (DiVA) |
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Luleå University of Technology Publications (DiVA) |
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English |
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Geotechnical Engineering Geoteknik |
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Geotechnical Engineering Geoteknik Edeskär, Tommy Helander, Anders Knutsson, Sven Numerical analysis of frost penetration around footings of power mills in subarctic conditions |
topic_facet |
Geotechnical Engineering Geoteknik |
description |
The potential for establishing wind power farms in the subarctic areas is high due to the combination of large available areas and few conflicting interests. In subarctic climate frost and thaw are major principal design aspects. In foundation work the major impact of frost action is at the outer peripheries of the foundation. Therefore most analysis work and prevention actions such as insulation around the foundation are concentrated to this part of the structure. The gravity foundations of wind power plants are often constructed as a reinforced concrete monolite. In the centre of the footing a steel cage is attached for anchoring the wind mill tower. This steel cage ends close to the sub-grade and can due to considerably higher thermal conductivity, compared to the concrete structure, transport a lot more heat. By FEM analysis, the frost penetration around, and under two typical wind-power foundations have been analyzed for different climate conditions in Sweden. In addition, different soil types have also been used. The result shows that the frost penetration in the centre of the foundation needs to be considered. Further it is shown that it is larger in the centre than compared to the periphery. Godkänd; 2009; Bibliografisk uppgift: USB; 20090814 (svek) |
format |
Conference Object |
author |
Edeskär, Tommy Helander, Anders Knutsson, Sven |
author_facet |
Edeskär, Tommy Helander, Anders Knutsson, Sven |
author_sort |
Edeskär, Tommy |
title |
Numerical analysis of frost penetration around footings of power mills in subarctic conditions |
title_short |
Numerical analysis of frost penetration around footings of power mills in subarctic conditions |
title_full |
Numerical analysis of frost penetration around footings of power mills in subarctic conditions |
title_fullStr |
Numerical analysis of frost penetration around footings of power mills in subarctic conditions |
title_full_unstemmed |
Numerical analysis of frost penetration around footings of power mills in subarctic conditions |
title_sort |
numerical analysis of frost penetration around footings of power mills in subarctic conditions |
publisher |
Luleå tekniska universitet, Geoteknologi |
publishDate |
2009 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-32330 |
genre |
Arctic Subarctic |
genre_facet |
Arctic Subarctic |
op_relation |
Proceedings of the 20th International Conference on Port and Ocean Engineering under Arctic Conditions : June 9-12, 2009, Luleå, Sweden http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-32330 Local 6cbce0e0-885c-11de-8da0-000ea68e967b |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766296165829050368 |