Correlated Non-Gaussian Models in Offshore Structural Reliability

by Steven R. Winterstein, Stanford Univ, United States,
Rabi S. De, Stanford Univ, United States,
Peter Bjerager, Stanford Univ, United States,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

Correlated non-Gaussian models of offshore loads and responses are developed. These require only correlation coefficients and either marginal distributions or moments. Simple estimates of the equivalent Gaussian correlation ?_? are shown. Moment-based models of both long-term environmental variables, such as significant wave height and period, and short-term wave elevation are combined. These quantify the effects of model uncertainty in long-term distributions and nonlinear wave kinematics on extreme wave predictions.

Subject Headings: Nonlinear waves | Water waves | Structural reliability | Structural models | Offshore structures | Mathematical models | Kinematic waves

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