A REVIEW OF THE PROBABILISTIC DESCRIPTION OF MORISON WAVE LOADING AND RESPONSE OF FIXED OFFSHORE STRUCTURES

Offshore structures must be designed against failure resulting from both fatigue and high forces due to extreme environmental conditions. The common procedure is to expose the structure to a range of regular waves whose heights and periods are determined from the long-term probability distribution of the wave heights and their associated periods at the site. However, in reality these structures are exposed to random wave-induced forces in the ocean environment, and hence it is inherently much more satisfactory to account for the randomness of the loading by establishing the probabilistic properties of the loading and the resulting responses. The major obstacle is the nonlinearity of the drag component of Morison's wave loading which results in non-Gaussian distributions for both loading and response. In this paper, progress made to date towards a systematic probabilistic analysis of fixed jacket-type offshore structures is reviewed.

• Supplemental Notes:
  • J Fluids and Structures, v 9 n 6, Aug 1995, p 585 [32 p, 49 ref, 14 fig]
• Authors:
  • Najafian, G
  • Burrows, R
  • Tickell, R G
• Publication Date: 1995

Language

• English

Subject/Index Terms

• TRT Terms: Distributions (Statistics); Offshore structures; Probability; Structural analysis; Structural mechanics
• Uncontrolled Terms: Distribution functions; Structural response
• Old TRIS Terms: Wave loads on structures
• Subject Areas: Bridges and other structures; Data and Information Technology; Marine Transportation;

Filing Info

• Accession Number: 00717751
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Mar 4 1996 12:00AM