Forces Generated in Ice Boom Structures.

Two ice booms in the international section of the St. Lawrence Seaway, near Ogdensburg, New York, were instrumented for measuring ice forces in the winter of 1972-73. These ice booms are among several installed annually by the United States and Canada primarily to prevent ice jams from forming and s...

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Bibliographic Details
Main Author: Perham,Roscoe
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1974
Subjects:
Snow
Ice and Permafrost
Civil Engineering
*Inland waterways
*Sea ice
*Booms(Equipment)
Force(Mechanics)
Drag
Measurement
Ice reporting
Load control
Saint Lawrence seaway
Ice booms
Canada
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/AD0775822
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0775822
Description
Summary:Two ice booms in the international section of the St. Lawrence Seaway, near Ogdensburg, New York, were instrumented for measuring ice forces in the winter of 1972-73. These ice booms are among several installed annually by the United States and Canada primarily to prevent ice jams from forming and severely restricting water flows. As presently used, they act as barriers to the navigation of ships. Measurements were initiated at a shore anchor site. The system used for these measurements consisted of a commercial tension cell, located in a new line spliced to the anchor rope, which provided electrical signals to a strip chart recorder that operated continuously. A second system consisted primarily of two special tension cells, an armored signal cable, a direct conversion electric generator, and a recorder. This system was used to measure two concurrent forces at a midstream location where high loads were expected. (Modified author abstract)

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