Sensitivity analysis of design parameters for reliability assessment of offshore wind turbine jacket support structures

Offshore Wind Turbine (OWT) support structures are subjected to hostile environments, defined by highly stochastic loads and complex soil-structure interaction, thus the need for a probabilistic approach towards design. The study carried out herein presents sensitivity analysis of these inherent variables imposed on OWT structure via purpose-developed modular non-intrusive structural reliability assessment formulation. results from this reveal that uncertainties in wind speed is design driving factor hydrodynamic load effects secondary this, ultimate (ULS) Fatigue Limit States (FLS) while their relative sensitivities Serviceability State (SLS) cannot be clearly distinguished but seen have dominant impact. Also, it was inferred incorporating correlation between significant impact ULS