Estimation of the extreme response probability distribution of offshore structures due to current and turbulence

For a model of offshore structure standing in a fluid, we derived the cumulative distribution function of the extreme base shear and the extreme bending moment, that is, the extreme value produced by the weighted sum of a spatially continuous non-Gaussian stochastic horizon- tal force field produced by current and turbulence, in a given time interval where it is assumed to be stationary. In the proposed methodology, extreme of non-Gaussian processes are necessary to handle which is achieved through a translation process methodology. The application is carried out on a thick column whereas the stochastic field of turbulence is supposed to be Gaussian but not necessarily in narrow-band. The cumulative distribution functions obtained are in good agreement with statistical results derived from simulations in the time domain.