Hydraulic Model Study of Port Huron Ice Control Structure
The ice discharge through an opening in an ice control structure was documented to be a function of the floe size, ice type, ice floe conditions and vessel direction. The model data for the average ice discharge per vessel transit scaled to prototype values compared favorably with data taken at the...
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ftdtic:ADA123715 2023-05-15T16:37:13+02:00 Hydraulic Model Study of Port Huron Ice Control Structure Calkins,Darryl J Deck,David S Sodhi,Devinder S COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1982-11 text/html http://www.dtic.mil/docs/citations/ADA123715 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA123715 en eng http://www.dtic.mil/docs/citations/ADA123715 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Statistics and Probability Mechanics *ICE FORMATION *DYNAMIC LOADS *HYDRAULIC MODELS *LOAD CONTROL *ICE OPENINGS *VESSEL TRAFFIC SYSTEMS LABORATORY TESTS CONTROL SYSTEMS EXPERIMENTAL DESIGN COMPARISON WINTER ICE MATHEMATICAL ANALYSIS SITE SELECTION RIVERS FIELD CONDITIONS DOWNSTREAM FLOW NAVIGATIONAL AIDS ENVIRONMENTAL ENGINEERING SYNTHETIC MATERIALS GREAT LAKES ICS(Ice Control Systems) St Marys River Lake Huron Text 1982 ftdtic 2016-02-20T21:42:44Z The ice discharge through an opening in an ice control structure was documented to be a function of the floe size, ice type, ice floe conditions and vessel direction. The model data for the average ice discharge per vessel transit scaled to prototype values compared favorably with data taken at the St. Marys River ice control structure (ICS). The model results of the force measurements were also consistent with data taken at the St. Marys ICS. The dynamic loading conditions were independent of vessel direction. The dynamic loading to the structure using 3 types of ice (plastic, natural and urea-doped) showed a considerable difference in their means and standard deviations. The urea-doped ice was evaluated for dynamic loading conditions, and reasonable peak values of 3 to 5 times the mean load at each measuring position were recorded, independent of vessel direction. It appears that synthetic random ice floes may be used in model studies where ice discharge through an opening in a structure needs to be documented. This study shows the synthetic random ice floe discharge to fall reasonably within the values obtained for natural ice discharge for both rafted and non-rafted ice fields above the ICS. However, the question of whether synthetic ice can be used for analyzing force distributions and dynamic force loading criteria cannot be fully answered at this time because the load distributions of the synthetic and natural floes appear to differ. (Author) Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database St. Marys River ENVELOPE(-55.839,-55.839,52.312,52.312) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Statistics and Probability Mechanics *ICE FORMATION *DYNAMIC LOADS *HYDRAULIC MODELS *LOAD CONTROL *ICE OPENINGS *VESSEL TRAFFIC SYSTEMS LABORATORY TESTS CONTROL SYSTEMS EXPERIMENTAL DESIGN COMPARISON WINTER ICE MATHEMATICAL ANALYSIS SITE SELECTION RIVERS FIELD CONDITIONS DOWNSTREAM FLOW NAVIGATIONAL AIDS ENVIRONMENTAL ENGINEERING SYNTHETIC MATERIALS GREAT LAKES ICS(Ice Control Systems) St Marys River Lake Huron |
spellingShingle |
Snow Ice and Permafrost Statistics and Probability Mechanics *ICE FORMATION *DYNAMIC LOADS *HYDRAULIC MODELS *LOAD CONTROL *ICE OPENINGS *VESSEL TRAFFIC SYSTEMS LABORATORY TESTS CONTROL SYSTEMS EXPERIMENTAL DESIGN COMPARISON WINTER ICE MATHEMATICAL ANALYSIS SITE SELECTION RIVERS FIELD CONDITIONS DOWNSTREAM FLOW NAVIGATIONAL AIDS ENVIRONMENTAL ENGINEERING SYNTHETIC MATERIALS GREAT LAKES ICS(Ice Control Systems) St Marys River Lake Huron Calkins,Darryl J Deck,David S Sodhi,Devinder S Hydraulic Model Study of Port Huron Ice Control Structure |
topic_facet |
Snow Ice and Permafrost Statistics and Probability Mechanics *ICE FORMATION *DYNAMIC LOADS *HYDRAULIC MODELS *LOAD CONTROL *ICE OPENINGS *VESSEL TRAFFIC SYSTEMS LABORATORY TESTS CONTROL SYSTEMS EXPERIMENTAL DESIGN COMPARISON WINTER ICE MATHEMATICAL ANALYSIS SITE SELECTION RIVERS FIELD CONDITIONS DOWNSTREAM FLOW NAVIGATIONAL AIDS ENVIRONMENTAL ENGINEERING SYNTHETIC MATERIALS GREAT LAKES ICS(Ice Control Systems) St Marys River Lake Huron |
description |
The ice discharge through an opening in an ice control structure was documented to be a function of the floe size, ice type, ice floe conditions and vessel direction. The model data for the average ice discharge per vessel transit scaled to prototype values compared favorably with data taken at the St. Marys River ice control structure (ICS). The model results of the force measurements were also consistent with data taken at the St. Marys ICS. The dynamic loading conditions were independent of vessel direction. The dynamic loading to the structure using 3 types of ice (plastic, natural and urea-doped) showed a considerable difference in their means and standard deviations. The urea-doped ice was evaluated for dynamic loading conditions, and reasonable peak values of 3 to 5 times the mean load at each measuring position were recorded, independent of vessel direction. It appears that synthetic random ice floes may be used in model studies where ice discharge through an opening in a structure needs to be documented. This study shows the synthetic random ice floe discharge to fall reasonably within the values obtained for natural ice discharge for both rafted and non-rafted ice fields above the ICS. However, the question of whether synthetic ice can be used for analyzing force distributions and dynamic force loading criteria cannot be fully answered at this time because the load distributions of the synthetic and natural floes appear to differ. (Author) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Calkins,Darryl J Deck,David S Sodhi,Devinder S |
author_facet |
Calkins,Darryl J Deck,David S Sodhi,Devinder S |
author_sort |
Calkins,Darryl J |
title |
Hydraulic Model Study of Port Huron Ice Control Structure |
title_short |
Hydraulic Model Study of Port Huron Ice Control Structure |
title_full |
Hydraulic Model Study of Port Huron Ice Control Structure |
title_fullStr |
Hydraulic Model Study of Port Huron Ice Control Structure |
title_full_unstemmed |
Hydraulic Model Study of Port Huron Ice Control Structure |
title_sort |
hydraulic model study of port huron ice control structure |
publishDate |
1982 |
url |
http://www.dtic.mil/docs/citations/ADA123715 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA123715 |
long_lat |
ENVELOPE(-55.839,-55.839,52.312,52.312) |
geographic |
St. Marys River |
geographic_facet |
St. Marys River |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA123715 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027520157679616 |