Author(s): P. Liferov; A. Jensen; K. V. Hoyland; S. Loset
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Keywords: No Keywords
Abstract: Punch tests on the ice rubble conducted at the University of Calgary and at the HSVA in Hamburg were analyzed. They were simulated using the PLAXIS finite element code. Special care was taken of the loading and the boundary conditions of the ice rubble and in particular of the buoyancy force and the in-plane friction forces. Simple MohrCoulomb material was used to simulate the ice rubble. The material properties were chosen such that peak values of the experimental and the simulated load–displacement curves were roughly the same. The simulations showed that the bending effect and consequently tension play an important role in punch tests. The effect of the material parameters on the bearing capacity of the rubble in punch tests was also analyzed. Cohesion seems to be the major contributor to the bearing capacity of the ice rubble, as the frictional resistance is not well mobilized in the punch tests.
Year: 2002