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SAMC
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• ANNUAL REPORT 2013
Fixed structures in ice
Fixed structures in Arctic and other icy waters need to withstand ice actions. The
structures can be vertically sided or have sloping sides in the water line. Iceberg impact,
ice ridge action and ice-induced vibration from crushing of level ice are the three critical
scenarios for vertical sided structures, whereas the rubble accumulation can be of great
importance for sloping structures. In SAMCoT, we have so far addressed ice-induced
vibrations of fixed structures. In 2013, we also initiated research on ice action on sloping
structures and a probabilistic approach of ice actions.
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In order to address these general challenges according
to the industry partners’ needs for innovation, several
research projects are carried out. These include:
• ice-induced vibration, analysis of measurements
• ice-induced vibrations, modelling and prediction
• heterogeneity of level ice and ice ridge properties
• ice action on sloping structures
All of these projects are the concrete challenges experi-
enced by operation in Arctic conditions. None could
have been properly addressed without the insights
from the basic research into the physical phenomena
of ice. The in situ investigations of ice properties, beam
tests, indentation experiments in different types of ice
have been of particular significance for this work. This
enables a deeper study of the active mechanisms during
ice interaction with fixed structures. The work will be
applied from late 2014 and onwards when ridge action
studies will be developed.