Metocean Pushover Analysis of a Jacket-Type Offshore Platform

Metocean loadings (wave plus current) which may play major role in the design of fixed offshore platforms are generally intensive, irregular, dynamic and cyclic loads and they may cause the platform to behave nonlinear. Although nonlinear pushover analysis has been widely used for only the estimation of seismic performance of the structure, in the analysis of jacket-type offshore platform nonlinear pushover analysis is also applicable for the estimation of the performance of the structure on extreme storm conditions. In this way, nonlinear metocean pushover analysis is performed on a 3-D model of a jacket-type offshore platform with different bracing systems (diagonal, x-bracing, v bracing, inverted v-bracing and k-bracing) to investigate and to compare the performances of different bracing systems for a jacket-type offshore platform subjected to 100-year extreme metocean conditions with different direction.