Ice Forces on Vertical Piles
The amount of force that an ice sheet can apply to a vertical pile was tested by lowering a hydraulic ram device into a hole cut in an existing sheet. The device had a large base and shoved a relatively narrow vertical pile in a horizontal direction. Test variables were: pile widths - 1.5 in. to 36....
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Online Access: | http://www.dtic.mil/docs/citations/ADA051770 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA051770 |
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ftdtic:ADA051770 2023-05-15T16:37:12+02:00 Ice Forces on Vertical Piles Nevel, D E Perham, R E Hogue, G B COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1977-04 text/html http://www.dtic.mil/docs/citations/ADA051770 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA051770 en eng http://www.dtic.mil/docs/citations/ADA051770 Approved for public release; distribution is unlimited. DTIC AND NTIS Snow Ice and Permafrost Structural Engineering and Building Technology *FORCE(MECHANICS) *PILE STRUCTURES *SEA ICE BENDING CREEP CRUSHING DISPLACEMENT FAILURE(MECHANICS) LABORATORY TESTS SHAPE SPLITTING THICKNESS WIDTH LPN-CWIS-31358 Text 1977 ftdtic 2016-02-23T09:48:03Z The amount of force that an ice sheet can apply to a vertical pile was tested by lowering a hydraulic ram device into a hole cut in an existing sheet. The device had a large base and shoved a relatively narrow vertical pile in a horizontal direction. Test variables were: pile widths - 1.5 in. to 36.7 in.; pile shapes-flat, round, 45 and 90 wedges; ice thickness - 2.6 in. to 8.8 in.; and ram speed - 0.07 in./sec to 18.75 in./sec; but not all shapes and sizes were tested at all speeds. Air temperature was 20 F(-6.7 C). Forces and displacements were measured electronically. The findings are presented as a table of test results and as bar graphs of the resultant ice pressures versus the pile width-to-ice-thickness ratio, pile width and shape combination and pile velocity. The types of failures in the ice sheet were classified as crushing, splitting, buckling, bending, and creeping. The ice sheet generally withstood a high initial load followed by several lower peak load levels. The maximum ice pressure measured was 610 psi for a 12.6-in.-diam round pile in 8.4-in.-thick ice. Text Ice Ice Sheet permafrost Sea ice wedge* Defense Technical Information Center: DTIC Technical Reports database Psi ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
institution |
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 *FORCE(MECHANICS) *PILE STRUCTURES *SEA ICE BENDING CREEP CRUSHING DISPLACEMENT FAILURE(MECHANICS) LABORATORY TESTS SHAPE SPLITTING THICKNESS WIDTH LPN-CWIS-31358 |
spellingShingle |
Snow Ice and Permafrost Structural Engineering and Building Technology *FORCE(MECHANICS) *PILE STRUCTURES *SEA ICE BENDING CREEP CRUSHING DISPLACEMENT FAILURE(MECHANICS) LABORATORY TESTS SHAPE SPLITTING THICKNESS WIDTH LPN-CWIS-31358 Nevel, D E Perham, R E Hogue, G B Ice Forces on Vertical Piles |
topic_facet |
Snow Ice and Permafrost Structural Engineering and Building Technology *FORCE(MECHANICS) *PILE STRUCTURES *SEA ICE BENDING CREEP CRUSHING DISPLACEMENT FAILURE(MECHANICS) LABORATORY TESTS SHAPE SPLITTING THICKNESS WIDTH LPN-CWIS-31358 |
description |
The amount of force that an ice sheet can apply to a vertical pile was tested by lowering a hydraulic ram device into a hole cut in an existing sheet. The device had a large base and shoved a relatively narrow vertical pile in a horizontal direction. Test variables were: pile widths - 1.5 in. to 36.7 in.; pile shapes-flat, round, 45 and 90 wedges; ice thickness - 2.6 in. to 8.8 in.; and ram speed - 0.07 in./sec to 18.75 in./sec; but not all shapes and sizes were tested at all speeds. Air temperature was 20 F(-6.7 C). Forces and displacements were measured electronically. The findings are presented as a table of test results and as bar graphs of the resultant ice pressures versus the pile width-to-ice-thickness ratio, pile width and shape combination and pile velocity. The types of failures in the ice sheet were classified as crushing, splitting, buckling, bending, and creeping. The ice sheet generally withstood a high initial load followed by several lower peak load levels. The maximum ice pressure measured was 610 psi for a 12.6-in.-diam round pile in 8.4-in.-thick ice. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Nevel, D E Perham, R E Hogue, G B |
author_facet |
Nevel, D E Perham, R E Hogue, G B |
author_sort |
Nevel, D E |
title |
Ice Forces on Vertical Piles |
title_short |
Ice Forces on Vertical Piles |
title_full |
Ice Forces on Vertical Piles |
title_fullStr |
Ice Forces on Vertical Piles |
title_full_unstemmed |
Ice Forces on Vertical Piles |
title_sort |
ice forces on vertical piles |
publishDate |
1977 |
url |
http://www.dtic.mil/docs/citations/ADA051770 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA051770 |
long_lat |
ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
geographic |
Psi |
geographic_facet |
Psi |
genre |
Ice Ice Sheet permafrost Sea ice wedge* |
genre_facet |
Ice Ice Sheet permafrost Sea ice wedge* |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA051770 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766027495287554048 |