Author(s): Mauri Maattanen
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Keywords: No Keywords
Abstract: The first reported dynamic ice-structure interaction events were encountered at the beginning of1960's at Cook Inlet, Alaska, after the first oil and gas production platforms were installed. Severe structural vibrations were encountered while level ice was moving at constant velocity and failed in crushing mode against the legs of structures. Ten years later the same problem was encountered in new steel aids-to-navigation structures in the Gulf of Bothnia, Finland. To understand the physics and mechanics of ice-induced vibrations in structures, various research projects were initiated practically in all countries that had offshore structures prone for the action of moving ice. Both scale-model and full-scale measurements were conducted and theoretical models were developed in order to develop countermeasures for structural design to avoid adverse ice-induced vibrations. Different-even contradicting-models and explanations were developed, but gradually a more coherent understanding on dynamic ice-structure interaction is emerging.
Year: 2014