Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads
This report presents a comprehensive overview of the characteristics, instrumentation and measured ice loads on the caisson structures that were used for exploratory drilling in the Canadian Beaufort Sea in the 1970s and 1980s. Details are presented on the Tarsiut Caissons, the Single Steel Drilling...
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:12328162 2023-05-15T15:40:16+02:00 Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads Timco, G. W. Johnston, M. E. 2002-11 text https://doi.org/10.4224/12328162 https://nrc-publications.canada.ca/eng/view/ft/?id=fa717e43-d8c5-44bb-af82-fb1040ed783c https://nrc-publications.canada.ca/eng/view/object/?id=fa717e43-d8c5-44bb-af82-fb1040ed783c https://nrc-publications.canada.ca/fra/voir/objet/?id=fa717e43-d8c5-44bb-af82-fb1040ed783c eng eng Publication date: 2002-11 doi:10.4224/12328162 open access technical report 2002 ftnrccanada https://doi.org/10.4224/12328162 2021-09-01T06:30:59Z This report presents a comprehensive overview of the characteristics, instrumentation and measured ice loads on the caisson structures that were used for exploratory drilling in the Canadian Beaufort Sea in the 1970s and 1980s. Details are presented on the Tarsiut Caissons, the Single Steel Drilling Caisson (SSDC), the Caisson Retained Island (CRI), and the Molikpaq. Details on the ice-load measuring instrumentation are presented for each of the drill sites where an ice-load measurement program took place. The global loads on the structures are presented as a Line Load (Global Load per width of the structure) and the Global Pressure (Line Load per ice thickness). Global loads are shown to be a function of the ice macrostructure (level first-year sea ice, multi-year ice, firstyear ridges, hummock fields, isolated floes). The analysis shows that there is a general increase in the Line Load with increasing ice thickness. The data show considerable scatter. Much of the scatter can be explained by examining the failure mode of the ice during the interaction process. The most significant result of the analysis shows that the maximum Global Pressure measured for all types of ice loading events never exceeded 2 MN/m². NRC publication: Yes Report Beaufort Sea Sea ice National Research Council Canada: NRC Publications Archive |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
description |
This report presents a comprehensive overview of the characteristics, instrumentation and measured ice loads on the caisson structures that were used for exploratory drilling in the Canadian Beaufort Sea in the 1970s and 1980s. Details are presented on the Tarsiut Caissons, the Single Steel Drilling Caisson (SSDC), the Caisson Retained Island (CRI), and the Molikpaq. Details on the ice-load measuring instrumentation are presented for each of the drill sites where an ice-load measurement program took place. The global loads on the structures are presented as a Line Load (Global Load per width of the structure) and the Global Pressure (Line Load per ice thickness). Global loads are shown to be a function of the ice macrostructure (level first-year sea ice, multi-year ice, firstyear ridges, hummock fields, isolated floes). The analysis shows that there is a general increase in the Line Load with increasing ice thickness. The data show considerable scatter. Much of the scatter can be explained by examining the failure mode of the ice during the interaction process. The most significant result of the analysis shows that the maximum Global Pressure measured for all types of ice loading events never exceeded 2 MN/m². NRC publication: Yes |
format |
Report |
author |
Timco, G. W. Johnston, M. E. |
spellingShingle |
Timco, G. W. Johnston, M. E. Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads |
author_facet |
Timco, G. W. Johnston, M. E. |
author_sort |
Timco, G. W. |
title |
Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads |
title_short |
Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads |
title_full |
Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads |
title_fullStr |
Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads |
title_full_unstemmed |
Caisson structures in the Beaufort Sea 1982-1990 : Characteristics, instrumentation and ice loads |
title_sort |
caisson structures in the beaufort sea 1982-1990 : characteristics, instrumentation and ice loads |
publishDate |
2002 |
url |
https://doi.org/10.4224/12328162 https://nrc-publications.canada.ca/eng/view/ft/?id=fa717e43-d8c5-44bb-af82-fb1040ed783c https://nrc-publications.canada.ca/eng/view/object/?id=fa717e43-d8c5-44bb-af82-fb1040ed783c https://nrc-publications.canada.ca/fra/voir/objet/?id=fa717e43-d8c5-44bb-af82-fb1040ed783c |
genre |
Beaufort Sea Sea ice |
genre_facet |
Beaufort Sea Sea ice |
op_relation |
Publication date: 2002-11 doi:10.4224/12328162 |
op_rights |
open access |
op_doi |
https://doi.org/10.4224/12328162 |
_version_ |
1766372448506216448 |