Design of offshore structures: impact of the possible existence of freak waves
نویسنده
چکیده
The importance of the possible existence of so-called freak waves regarding structural design is discussed. At first the framework for design of offshore structures on the Norwegian continental shelf is presented for the purpose of indicating the annual exceedance probabilities of concern regarding design. The adequacy of the second order random model for the sea surface process is briefly indicated. It is suggested that freak waves should be defined as wave events from a population not captured by the second order model. Evidences of the existence of freak waves are discussed and possible originating mechanisms for their existence are commented upon. Finally, a probabilistic framework for accounting for freak waves in design is presented. The approach is illustrated by assessing the total wave induced load on a generic jacket structure.
منابع مشابه
توابع احتمالی حاکم بر نیروها و لنگرهای ناشی از امواج تصادفی دریا بر پایه قائم
Using the statistical characteristics is one of the methods to justify the random nature of the ocean waves. Probability function are used to facilitate the studies of the random waves parameters, such as the surface and height and period of the waves. Since, the force of the ocean waves are the prevalent principal forces on the offshore structures, the assignment of the significant structural ...
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