Extreme-response analysis of jack-up platforms

  • Kjeøy H
  • Bøe N
  • Hysing T
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Abstract

The extreme wave and current response of a typical North Sea jack-up drilling platform has been calculated using nonlinear, stochastic, time-domain analysis techniques. A statistical treatment of the response-time histories has been performed. Appropriate probability distributions have been fitted to simulated response amplitudes and extrapolated to determine extreme values in storms of 3 or 6 h duration. Nonlinear geometric effects and dynamic effects are also addressed. The results of the nonlinear time-domain analyses are compared to the results of more simplified methods used in jack-up designs. © 1990.

Author-supplied keywords

  • dynamic behaviour
  • extreme response
  • irregular wave loads
  • jack-up platforms
  • non-linear effects
  • time-domain analyses

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Authors

  • H. Kjeøy

  • N. G. Bøe

  • T. Hysing

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