Author(s): Andrew Assur
Linked Author(s):
Keywords: No Keywords
Abstract: A method is presented to calculate the effective ice load on vertical structures depending upon width of structure related to ice thickness and fundamental ice properties (anisotropic semi restrained crushing strength, Young’s modulus, Poisson's ratio, internal friction). The basic equation satisfies the theoretical indentation solution for a narrow pile and approaches exponentially the crushing value for a straight wall. Both extremes appear as simple intercepts on a plot which furthermore can be linearized. The concept is compared with largely Russian test material and equations which show good agreement. Internal friction must be considered in the analysis since it increases possible ice forces. Due to this local indentation forces by ice can be higher as previously assumed for the design of ships. Bucking instability introduces complications in model tests. For structures in the field the random configuration of ice collars must be considered. For this a complete solution is still not available.
Year: 1972