Ice induced platform motions

The first time in the Bohai sea and the yellow sea in China vibrations on platform were observed in-situ due to the movement of ice packs around the platform The dynamic loads affect not only the routine operation of an offshore platform such as drilling and production activities, but also the safety and serviceability of the structure. It is indispensable to reducing the overall response of a jacket platform subjected to strong dynamic loads. In general, reduction of the dynamic stress amplitude of an offshore structure by 15% can extend the service life over two times, and can result in decreasing the expenditure on the maintenance and inspection of the structure.