Author(s): G. W. Timco

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Abstract: A series of tests has been carried out to investigate systematically the magnitude and parameters influencing the interaction of a level, floating ice sheet with an upward-breaking 45° inclined plane. The tests were carried out using carbamide model ice in the ice tank at the Hydraulics Laboratory NRCC. A steel-frame box with one 45° wood face was mounted through two load cells (vertical and horizontal directions) to the front of the main carriage in the tank. The structure was pushed through the ice by driving the main carriage. Several parameters were varied over a wide range including the structure height and width; ice thickness, strength, rigidity and characteristic length; and both the speed and frictional characteristics of the ice-structure interaction. The load-time curves obtained from the two load cells were analysed using time-series analysis, and the mean and maximum load levels, standard deviation about the mean, variance spectral density and peak periods were obtained for each test. The results are presented in tabular form and are compared to the predictions of two different theories of an ice sheet interacting with a wide, sloping structure.

DOI:

Year: 1984