STATISTICAL METHODS FOR APPLYING ICING ESTIMATES IN OFFSHORE DESIGN

摘要

While methods for establishing statistical extreme values of wind and wave loads for use in offshore design are well established, this is not the case for estimates of marine icing. Using estimates of marine icing from a numerical model, both existing and new statistical methods are applied for calculating extreme spatial ice distribution that may be applied in the design process. Statistics for global loads and directional dependency of icing are also described, as well as methods for assessing the expected duration of icing events. The methods are applied to a relevant offshore structure, and the process of developing a generalized extreme icing profile is described. Comparisons are made with the existing recommendations given in the offshore standards.