Effects of structure boundary conditions and snow-pack properties on snow-creep pressures
Structures placed in deep snow covers are subject to forces caused by interruption of the down-slope snow-pack deformation components. The resulting creep pressures are often the primary design consideration. In this paper, accurate field data (pressures) and theoretical analysis of the problem usin...
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20378838 2023-05-15T13:29:12+02:00 Effects of structure boundary conditions and snow-pack properties on snow-creep pressures McClung, D. M. Larsen, J. O. 1989 text https://nrc-publications.canada.ca/eng/view/ft/?id=38e0b8bc-73fb-486d-af00-462e7342e400 https://nrc-publications.canada.ca/eng/view/object/?id=38e0b8bc-73fb-486d-af00-462e7342e400 https://nrc-publications.canada.ca/fra/voir/objet/?id=38e0b8bc-73fb-486d-af00-462e7342e400 eng eng issn:0260-3055 Annals of Glaciology, Volume: 13, Publication date: 1989, Pages: 175–179 report_number:IRC-P-1625 snow loads creep boundary conditions structural properties pack charge de neige fluage condition aux limites proprié té structurale article 1989 ftnrccanada 2021-09-01T06:34:25Z Structures placed in deep snow covers are subject to forces caused by interruption of the down-slope snow-pack deformation components. The resulting creep pressures are often the primary design consideration. In this paper, accurate field data (pressures) and theoretical analysis of the problem using a linear creep law to define snow deformation are presented. Results include analytical expressions for the pressures, and it is demonstrated that the resulting linear theory underestimates the mean pressures by about 20%. Higher accuracy will require that a non-linear deformation law be formulated. Les ouvrages se trouvant dans les manteaux nivaux épais sont soumis à des forces dues à l'interruption des éléments de déformation du manteau nival dans le sens de la pente. Les pressions de fluage qui en résultent constituent souvent le principal facteur à prendre en compte dans la conception. Les auteurs de ce document fournissent des données de terrain (pressions) précises et font une analyse théorique du problème à l'aide d'une loi du fluage linéaire visant à définir la déformation de la neige. Ils formulent des expressions analytiques représentant les pressions et montrent que la théorie linéaire résultante sous-estime d'environ 20% les pressions moyennes. Pour en arriver à une plus grande précision, il faudra établir une loi de la déformation non linéaire. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Annals of Glaciology National Research Council Canada: NRC Publications Archive |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
snow loads creep boundary conditions structural properties pack charge de neige fluage condition aux limites proprié té structurale |
spellingShingle |
snow loads creep boundary conditions structural properties pack charge de neige fluage condition aux limites proprié té structurale McClung, D. M. Larsen, J. O. Effects of structure boundary conditions and snow-pack properties on snow-creep pressures |
topic_facet |
snow loads creep boundary conditions structural properties pack charge de neige fluage condition aux limites proprié té structurale |
description |
Structures placed in deep snow covers are subject to forces caused by interruption of the down-slope snow-pack deformation components. The resulting creep pressures are often the primary design consideration. In this paper, accurate field data (pressures) and theoretical analysis of the problem using a linear creep law to define snow deformation are presented. Results include analytical expressions for the pressures, and it is demonstrated that the resulting linear theory underestimates the mean pressures by about 20%. Higher accuracy will require that a non-linear deformation law be formulated. Les ouvrages se trouvant dans les manteaux nivaux épais sont soumis à des forces dues à l'interruption des éléments de déformation du manteau nival dans le sens de la pente. Les pressions de fluage qui en résultent constituent souvent le principal facteur à prendre en compte dans la conception. Les auteurs de ce document fournissent des données de terrain (pressions) précises et font une analyse théorique du problème à l'aide d'une loi du fluage linéaire visant à définir la déformation de la neige. Ils formulent des expressions analytiques représentant les pressions et montrent que la théorie linéaire résultante sous-estime d'environ 20% les pressions moyennes. Pour en arriver à une plus grande précision, il faudra établir une loi de la déformation non linéaire. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
McClung, D. M. Larsen, J. O. |
author_facet |
McClung, D. M. Larsen, J. O. |
author_sort |
McClung, D. M. |
title |
Effects of structure boundary conditions and snow-pack properties on snow-creep pressures |
title_short |
Effects of structure boundary conditions and snow-pack properties on snow-creep pressures |
title_full |
Effects of structure boundary conditions and snow-pack properties on snow-creep pressures |
title_fullStr |
Effects of structure boundary conditions and snow-pack properties on snow-creep pressures |
title_full_unstemmed |
Effects of structure boundary conditions and snow-pack properties on snow-creep pressures |
title_sort |
effects of structure boundary conditions and snow-pack properties on snow-creep pressures |
publishDate |
1989 |
url |
https://nrc-publications.canada.ca/eng/view/ft/?id=38e0b8bc-73fb-486d-af00-462e7342e400 https://nrc-publications.canada.ca/eng/view/object/?id=38e0b8bc-73fb-486d-af00-462e7342e400 https://nrc-publications.canada.ca/fra/voir/objet/?id=38e0b8bc-73fb-486d-af00-462e7342e400 |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_relation |
issn:0260-3055 Annals of Glaciology, Volume: 13, Publication date: 1989, Pages: 175–179 report_number:IRC-P-1625 |
_version_ |
1765999273694986240 |