An overview of the development of ice ridge keel strengths test program
The Development of Ice Ridge Keel Strengths is a four-year collaborative venture between the C–CORE Centre for Arctic Resource Development (CARD) and the National Research Council – Ocean, Coastal and River Engineering (NRC-OCRE). The main focus of the project is to investigate the failure mechanism...
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Offshore Technology Conference
2014
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Online Access: | https://doi.org/10.4043/24553-MS https://nrc-publications.canada.ca/eng/view/object/?id=0da915f8-3c17-44d6-82a1-715f10fe9b77 https://nrc-publications.canada.ca/fra/voir/objet/?id=0da915f8-3c17-44d6-82a1-715f10fe9b77 |
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:21275902 2023-05-15T14:21:00+02:00 An overview of the development of ice ridge keel strengths test program Bailey, Eleanor Bruce, Jonathon Derradji-Aouat, Ahmed Lau, Michael 2014-02-12 text https://doi.org/10.4043/24553-MS https://nrc-publications.canada.ca/eng/view/object/?id=0da915f8-3c17-44d6-82a1-715f10fe9b77 https://nrc-publications.canada.ca/fra/voir/objet/?id=0da915f8-3c17-44d6-82a1-715f10fe9b77 eng eng Offshore Technology Conference 2014 Arctic Technology Conference, OTC Arctic Technology Conference, Feb. 10-12, 2014, Houston, Texas, ISBN: 978-1-61399-355-2, Publication date: 2014-02-12, Pages: 45–52 doi:10.4043/24553-MS article 2014 ftnrccanada https://doi.org/10.4043/24553-MS 2021-09-01T06:28:02Z The Development of Ice Ridge Keel Strengths is a four-year collaborative venture between the C–CORE Centre for Arctic Resource Development (CARD) and the National Research Council – Ocean, Coastal and River Engineering (NRC-OCRE). The main focus of the project is to investigate the failure mechanisms associated with gouging ice ridge keels and the conditions under which these keels will continue to gouge without failure. This is important for the design of subsea structures in shallow waters, where ice keels have been observed to scour the sea floor, posing a threat to pipelines and subsea infrastructure. A series of near full-scale keel-gouge tests were carried out to investigate the strength characteristics of a first-year ice keel and its subsequent failure as it was pushed into an artificial seabed. The ice keels were constructed using freshwater ice blocks with a nominal thickness of 10 cm, produced in a cold storage facility prior to the start of the test program. The ice keels were constructed with the aid of a keel former that produced idealized keel geometries of 1.7 m depth, 4 m length and 3.5 m width. Once constructed, the keels were lowered into the water and left overnight to consolidate with air temperatures held at -20°C. The keel samples were tested using a custom-built frame that was designed and used in the Pipeline Ice Risk Assessment and Mitigation (PIRAM) Joint Industry Project. The frame applied a vertical surcharge load to the top of the keel whilst a soil tray was displaced horizontally, causing the bottom of the ice keel to interact with an artificial seabed. A total of ten keel tests were conducted in this test program. The parameters varied were the initial temperature of the ice (-3° and -18°C), the initial surcharge pressure (5-60 kPa), the soil tray velocity (1-20 mm s-1) and the consolidation time (19-48 hrs). An overview of the test program and preliminary results are discussed. NRC publication: Yes Article in Journal/Newspaper Arctic Arctic National Research Council Canada: NRC Publications Archive Arctic All Days |
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Open Polar |
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National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
description |
The Development of Ice Ridge Keel Strengths is a four-year collaborative venture between the C–CORE Centre for Arctic Resource Development (CARD) and the National Research Council – Ocean, Coastal and River Engineering (NRC-OCRE). The main focus of the project is to investigate the failure mechanisms associated with gouging ice ridge keels and the conditions under which these keels will continue to gouge without failure. This is important for the design of subsea structures in shallow waters, where ice keels have been observed to scour the sea floor, posing a threat to pipelines and subsea infrastructure. A series of near full-scale keel-gouge tests were carried out to investigate the strength characteristics of a first-year ice keel and its subsequent failure as it was pushed into an artificial seabed. The ice keels were constructed using freshwater ice blocks with a nominal thickness of 10 cm, produced in a cold storage facility prior to the start of the test program. The ice keels were constructed with the aid of a keel former that produced idealized keel geometries of 1.7 m depth, 4 m length and 3.5 m width. Once constructed, the keels were lowered into the water and left overnight to consolidate with air temperatures held at -20°C. The keel samples were tested using a custom-built frame that was designed and used in the Pipeline Ice Risk Assessment and Mitigation (PIRAM) Joint Industry Project. The frame applied a vertical surcharge load to the top of the keel whilst a soil tray was displaced horizontally, causing the bottom of the ice keel to interact with an artificial seabed. A total of ten keel tests were conducted in this test program. The parameters varied were the initial temperature of the ice (-3° and -18°C), the initial surcharge pressure (5-60 kPa), the soil tray velocity (1-20 mm s-1) and the consolidation time (19-48 hrs). An overview of the test program and preliminary results are discussed. NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Bailey, Eleanor Bruce, Jonathon Derradji-Aouat, Ahmed Lau, Michael |
spellingShingle |
Bailey, Eleanor Bruce, Jonathon Derradji-Aouat, Ahmed Lau, Michael An overview of the development of ice ridge keel strengths test program |
author_facet |
Bailey, Eleanor Bruce, Jonathon Derradji-Aouat, Ahmed Lau, Michael |
author_sort |
Bailey, Eleanor |
title |
An overview of the development of ice ridge keel strengths test program |
title_short |
An overview of the development of ice ridge keel strengths test program |
title_full |
An overview of the development of ice ridge keel strengths test program |
title_fullStr |
An overview of the development of ice ridge keel strengths test program |
title_full_unstemmed |
An overview of the development of ice ridge keel strengths test program |
title_sort |
overview of the development of ice ridge keel strengths test program |
publisher |
Offshore Technology Conference |
publishDate |
2014 |
url |
https://doi.org/10.4043/24553-MS https://nrc-publications.canada.ca/eng/view/object/?id=0da915f8-3c17-44d6-82a1-715f10fe9b77 https://nrc-publications.canada.ca/fra/voir/objet/?id=0da915f8-3c17-44d6-82a1-715f10fe9b77 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic |
genre_facet |
Arctic Arctic |
op_relation |
2014 Arctic Technology Conference, OTC Arctic Technology Conference, Feb. 10-12, 2014, Houston, Texas, ISBN: 978-1-61399-355-2, Publication date: 2014-02-12, Pages: 45–52 doi:10.4043/24553-MS |
op_doi |
https://doi.org/10.4043/24553-MS |
container_title |
All Days |
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1766293561048825856 |