Interaction between level ice and conical structures: centrifuge simulations. Phase II

• Main Authors: Barrette, P. D., Lau, M., Phillips, R., McKenna, R. F., Jones, S. J.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 2000
• Subjects: conical structures; Canada; Conseil; Arctic
• Online Access: https://nrc-publications.canada.ca/eng/view/object/?id=ea285b87-475f-47f8-a5d7-2fbeba30537d; https://nrc-publications.canada.ca/fra/voir/objet/?id=ea285b87-475f-47f8-a5d7-2fbeba30537d

This paper is a follow-up of a previous study on the interaction between upward-breaking conical structures and level ice in a centrifuge. New data were collected from a series of ten ice sheets grown at an inertial acceleration equivalent to 30 times Earth's gravity (30g). A small conical structure was driven against this ice, which ranged in thickness from 5 to 20 mm. Interaction velocities between the structure and the ice were 7,10,40 and 100 mm/s and inertial accelerations were 1 (noram gravity), 30, 60, 80 and 120g. Cones with slopes of 45, 60 and 75 deg. with respect to the horizontal were used. A description of ice rubble build-up against the cone is presented. The horizontal and vertical loads are compared with a prediction algorithm taking into account the 3D nature of the ice loads. The influence of displacement rates is also discussed. Mr. Jones was affiliated with the National Research Council of Canada, Institute for Environmental Research and Technology when he authored this article. M. Jones était affilié avec le Conseil national de recherches du Canada, Institut de recherche environnementale et de technologie lorsqu’il a rédigé cet article. Peer reviewed: Yes NRC publication: Yes