Forces on Jacket Structures: Effects of Directionality and Spectral Shapes

In Malaysia, the majority of oil platforms are comprised of jacket structures. Despite
reassessments having been conducted regularly, existing jacket structures might be
subjected to conditions more critical than ever due to numerous reasons which include the
plan of utilizing the existing structures beyond its design life. Furthermore, the existing
structures are only designed to withstand regular wave loadings without considering other
load cases which raises even more concerns about the structural integrity. Hence, this
work aims to assess the structure under irregular wave loadings, compare the loadings on
the structure under the effects of directionality and different spectral shapes. The research
methodology is divided into three main stages.