| Popis: |
When considering man-made structures for offshore Arctic regions where ice islands may transit, the probability of encountering different sizes of ice islands and ice island fragments needs to be estimated. This can be difficult to determine in near-shore regions where the occurrence of ice islands is infrequent, yet if there is an occurrence and the ice island grounds in shallow water, it could break into a number of smaller ice island fragments. Probabilistic design methods can be used to determine if consideration of ice island impact in structural design criteria is required and to choose appropriate levels of ice strengthening. This chapter includes a brief description of the design issues involved, available approaches and areas where additional information would be useful. |
