Extreme-response analysis of jack-up platforms |
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Authors: | H Kje y N G B e and T Hysing |
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Institution: | H. Kjeø,y, N. G. Bø,e and T. Hysing |
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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. |
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Keywords: | jack-up platforms extreme response irregular wave loads time-domain analyses dynamic behaviour non-linear effects |
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