Model tests of ice forces on fixed and oscillating cones

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Journal titleCold Regions Science and Technology
Pages6172; # of pages: 12
Subjectmodel tests; marine structures; ice; conical shape; low salinity ice; downward breaking conical structures; effects of velocity, ice thickness and flexural strength; horizontal and vertical forces
AbstractA series of model tests has been carried out on downward breaking conical structures using low salinity model ice. Comparison with information in the literature showed that a downward breaking cone experiences lower ice forces than an upward breaking cone. Fixed cones of angles of 15, 30, 45 and 60 deg were tested in 50-mm-thick ice of 60 kPa flexural strength at velocities ranging form 0.01 to 0.5 m/s. The effects of thickness and flexural strength variations were also investigated. Horizontal forces were observed to increase with increasing velocity. Ice thickness variation was observed to have a stronger influence on the vertical forces than on the horizontal forces. Vertical and horizontal forces showed a decrease with decreasing flexural strength. Two test series were run with the 45 deg conical structure arranged so that it oscillated. Horizontal force reductions of up to two thirds were observed.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number20703
NPARC number20358919
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Record identifier5a6313b9-c630-451a-83ef-1bc671b740e7
Record created2012-07-20
Record modified2016-05-09
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