The paper describes the realization of the dynamic ice loads calculation method. The technique can be used in research or design works related to the development of the new floating objects for the Arctic conditions. The paper considers the mathematical models of the floating anchored structure behavior under the influence of the level ice, the consolidated part and the keel of ridge. All listed models are combined into one algorithm for the description of floating structure behavior under the influence of the ice formations. There are some results of comparative calculations which confirm the working capacity of the offered techniques presented in this paper.


Provision of the necessary facilities for the marine hydrocarbons fields is related to the creation of floating objects working in the high sea for a long time. When developing the deep-water deposits floating anchored objects seem the most promising. As a rule, the influence of ridges on anchored objects is studied during their designing. Anchored structures, unlike fixed, possess an essential pliability therefore ice loads on these objects depend on structures' movement. Nevertheless, prior estimation of ice loads is quite often carried out without dynamic aspects of this interaction. The purpose of the present work is the development of the methodology for the dynamics analysis of the interaction between the ice formations (level ice and ridges) and the anchored floating structures. The static (quasi-static) loads on the motionless constructions have been studied for many years now and the calculation methods for these objects are more or less well known. A number of laboratory experiments and theoretical researches show that the dynamic interaction - comparing it with the static approach - can lead in some cases to an increase in loads or forces in anchor lines whereas in others - to the decrease in them.

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