Multi-leg structures in ice - examining global loading uncertainties

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TypeArticle
Proceedings title22nd International Conference on Port and Ocean Engineering under Arctic Conditions (POAC 2013)
Conference22nd International Conference on Port and Ocean Engineering under Arctic Conditions, June 9-13, Espoo, Finland
Volume1
Pages512524
AbstractThe ISO 19906 Arctic Offshore Standard (2010) represents a great advancement for standards as they pertain to Arctic engineering. However, uncertainties remain for a number of topic areas, including global loading on multi-leg structures in ice. These uncertainties include the effects of sheltering, the width of damaged ice and the effect of jamming. Additional uncertainties pertain to the effects of ridge loading and various ice properties. This paper numerically examines some of these uncertainties, through a parametric study approach. The results present the ice forces on a representative structure, as well as broken ice zone widths. The results show that peak loads are associated with ice drift at an angle, as observed in other laboratory and numerical simulations. In addition, loads increase with decreasing clearance between the legs. The results have applications not only for multi-leg oil and gas structures in ice-covered water, but could be further examined in the context of bridge piers and offshore fields of wind turbine towers.
Publication date
PublisherLulea University of Technology
LanguageEnglish
AffiliationNational Research Council Canada; Ocean, Coastal and River Engineering
Peer reviewedYes
NPARC number23000569
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Record identifiere987d29a-ee8d-4e7e-871d-feccee175158
Record created2016-08-02
Record modified2016-08-02
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