Study of Piles Installed in Polar Snow
This report describes the study of piles tested in polar snow at Camp Century, Greenland. More than 20 piles of various lengths and sizes were driven, including timber, closed-end and open-end steel pipe piles, and I- and H-piles. The H-piles were instrumented with strain gages. In addition to the d...
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ftdtic:ADA029191 2023-05-15T16:26:47+02:00 Study of Piles Installed in Polar Snow Kovacs,Austin COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H 1976-07 text/html http://www.dtic.mil/docs/citations/ADA029191 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA029191 en eng http://www.dtic.mil/docs/citations/ADA029191 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Structural Engineering and Building Technology *POLAR REGIONS *PILE STRUCTURES LOADS(FORCES) PENETRATION FOUNDATIONS(STRUCTURES) GREENLAND *Pile foundations Camp Century(Greenland) Settlement(Structural) Text 1976 ftdtic 2016-02-20T11:26:55Z This report describes the study of piles tested in polar snow at Camp Century, Greenland. More than 20 piles of various lengths and sizes were driven, including timber, closed-end and open-end steel pipe piles, and I- and H-piles. The H-piles were instrumented with strain gages. In addition to the driven piles, two purely end-bearing piles were installed in augered holes and five piles were frozen in place using a snow-water slurry. Driving records were obtained and are discussed. Analysis of the driving response of various piles revealed that the Hiley formula, and presumably other similar pile driving formulas, cannot be used to predict the ultimate supporting capacity of piles driven in snow. Factors such as pile inertia, rigidity, size, and tip resistance are discussed in relation to their apparent influence upon pile penetration. Pile load test procedures are described and test results are discussed. It was found that closed-end pipe piles are decidedly inferior to open-end pipe piles in their load-carrying capability and their ultimate supporting capacity. Although pile settlement was found to be dependent upon such variables as pipe load, time, pile shape, and snow temperature, precise effects of these variables were not determined. Nevertheless, the capability of open-end piles to carry quite heavy loads was demonstrated and a procedure is presented for testing these piles in snow. Report on Greenland Project 33. Text Greenland Ice permafrost Defense Technical Information Center: DTIC Technical Reports database Greenland |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Structural Engineering and Building Technology *POLAR REGIONS *PILE STRUCTURES LOADS(FORCES) PENETRATION FOUNDATIONS(STRUCTURES) GREENLAND *Pile foundations Camp Century(Greenland) Settlement(Structural) |
spellingShingle |
Snow Ice and Permafrost Structural Engineering and Building Technology *POLAR REGIONS *PILE STRUCTURES LOADS(FORCES) PENETRATION FOUNDATIONS(STRUCTURES) GREENLAND *Pile foundations Camp Century(Greenland) Settlement(Structural) Kovacs,Austin Study of Piles Installed in Polar Snow |
topic_facet |
Snow Ice and Permafrost Structural Engineering and Building Technology *POLAR REGIONS *PILE STRUCTURES LOADS(FORCES) PENETRATION FOUNDATIONS(STRUCTURES) GREENLAND *Pile foundations Camp Century(Greenland) Settlement(Structural) |
description |
This report describes the study of piles tested in polar snow at Camp Century, Greenland. More than 20 piles of various lengths and sizes were driven, including timber, closed-end and open-end steel pipe piles, and I- and H-piles. The H-piles were instrumented with strain gages. In addition to the driven piles, two purely end-bearing piles were installed in augered holes and five piles were frozen in place using a snow-water slurry. Driving records were obtained and are discussed. Analysis of the driving response of various piles revealed that the Hiley formula, and presumably other similar pile driving formulas, cannot be used to predict the ultimate supporting capacity of piles driven in snow. Factors such as pile inertia, rigidity, size, and tip resistance are discussed in relation to their apparent influence upon pile penetration. Pile load test procedures are described and test results are discussed. It was found that closed-end pipe piles are decidedly inferior to open-end pipe piles in their load-carrying capability and their ultimate supporting capacity. Although pile settlement was found to be dependent upon such variables as pipe load, time, pile shape, and snow temperature, precise effects of these variables were not determined. Nevertheless, the capability of open-end piles to carry quite heavy loads was demonstrated and a procedure is presented for testing these piles in snow. Report on Greenland Project 33. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H |
format |
Text |
author |
Kovacs,Austin |
author_facet |
Kovacs,Austin |
author_sort |
Kovacs,Austin |
title |
Study of Piles Installed in Polar Snow |
title_short |
Study of Piles Installed in Polar Snow |
title_full |
Study of Piles Installed in Polar Snow |
title_fullStr |
Study of Piles Installed in Polar Snow |
title_full_unstemmed |
Study of Piles Installed in Polar Snow |
title_sort |
study of piles installed in polar snow |
publishDate |
1976 |
url |
http://www.dtic.mil/docs/citations/ADA029191 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA029191 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice permafrost |
genre_facet |
Greenland Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA029191 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766015764489306112 |