Probabilistic Description of Ice Forces on an Offshore Arctic Structure

by M. M. Winkler, Shell Oil Co, Houston, TX, USA,
A. M. Reece, Shell Oil Co, Houston, TX, USA,
J. R. Kreider, Shell Oil Co, Houston, TX, USA,
E. G. Ward, Shell Oil Co, Houston, TX, USA,
I. B. Boaz, Shell Oil Co, Houston, TX, USA,

Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore


A probabilistic simulation model has been developed to describe the frequency and outcome of multi-year ice floe encounters with a fixed offshore structure located in the Beaufort Sea, Alaska. The simulation model (ICESIM) applies environmental data and field observations to develop a seasonal description of multi-year ice floe movement. The model was conceived for application within the 60-foot water depth contour for Harrison Bay; however, the overall concept can be applied in other locations. The computation of global ice forces is accomplished using an appropriate ice-structure interaction model which is a function of structure geometry and ice failure mechanism.

Subject Headings: Offshore structures | Ice | Probability | Sea ice | Simulation models | Computer models | Structural analysis | Computer analysis | Arctic | Beaufort Sea | Alaska | United States

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