Abstract
The abrasion of offshore structures constructed in cold regions occur when the movement of ice sheets are active during the time of thawing. Theleft-lettore, It is very important in the design of offshore structures for very cold region to estimate the abrasion amount due to a movement of sea ice sheet. Basic studies on the abrasion of various construction materials due to the movement of sea ice have been conducted by Saeki et al. Furthermore, as natural sea ice sheets contain fine sand, the authors also systematically experimented on various materials abrasion by sea ice containing sand. According to the data obtained, the authors propose an estimation method for the actual amount of abrasion on offshore structures. And the authors examined the adequacy of our abrasion estimation method, comparing it to the result of the observations of the light house in the Gulf of Bothnia.
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