Author(s): D. J. Calkins; D. S. Sodhi; D. S. Deck
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Keywords: No Keywords
Abstract: The Corps of Engineers, in its study of year-round navigation on the Great Lakes, recognized the problem of ice discharge into the St. Clair River from Lake Huron. Under natural conditions, large quantities of ice often enter the river from the lake, creating ice jams and flooding in the lower reaches of the St. Clair River. The natural ice arch which forms regularly just upstream of the entrance to the river prevents ice transport into the river when it is intact. Whenever a ship goes through such an arch or a storm surge disturbs it, ice discharges into the river. This study deals with the determination of force levels on, and the amount of ice discharge through the opening in, an ice control structure, using natural and synthetic ice floes. Two studies will be presented. A physical model was used to determine the ice discharge through various gap openings in an ice control structure and the hydraulic forces on the structure. The wind stress model evaluated the potential added force due to wind loading on a structure and the ice discharge through the opening in the ice control structure.
Year: 1981