VARIABILITY IN LOAD AND STRENGTH FOR A JACK-UP STRUCTURE

The reliability analysis of offshore structures is generally load driven, i.e., the uncertainties in loading are much greater than in the capacity. Due to the fact that the load variability is much larger than the variability in structural strength, it is most likely that a structural failure event will result from the load being high, rather than the strength capacity being low. In this paper the importance of uncertainties in load and structural strength for a jack-up structure is discussed. It is shown that inherent (aleatory) uncertainties are dominating over statistical and model (epistemic) uncertainties.

• Supplemental Notes:
  • ISOPE 93, 3rd Intl Offshore & Polar Engng Conf; 6-11 June 1993; Singapore. Sponsored by ISOPE, U.S.A. et al. Procs. Publ by ISOPE, ISBN 1-880653-08-7. Vol IV, p 592 [8 p, 12 ref, 4 tab, 5 fig]
• Authors:
  • Dalane, J I
  • Haver, S
  • Langen, I
• Publication Date: 1993

Language

• English

Subject/Index Terms

• TRT Terms: Reliability; Structural analysis
• Uncontrolled Terms: Environmental loads; Structural reliability
• Old TRIS Terms: Jackup platforms; Structural strength
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00707509
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM