Application of the random storm method to global structural loading on fixed offshore structures

In conventional practice extreme design conditions for offshore structures are obtained very conservatively by extrapolating 3-hourly statistics of wind, wave and current data to a (say) 100 year return level, assuming that the 100-year extremes occur simultaneously and act in the same direction. This study involves an alternative approach...

Dynamic analysis of Jack-ups

Jack-up offshore structures have a natural period which lies in the high frequency tail of the spectra of North Sea storm waves. This taxi has Significant energy and the jack-up may experience significant dynamic Data have become available from field measurements of the dynamic behaviour of the Maersk Guardian jack-up rig. These data have been...

Guyed tower offshore windmill

A guyed tower offshore windmill has been designed to utilize the much higher wind energy production possible there in comparison to onshore. It will be sited in an intermediate water depth (=75 m) of a coastal region. The feasibility for North Sea conditions for a structure with a life of 25 years has been examined. A modified design, slender...