Fixed Offshore Platform Design and Structural Strength Evaluation considering Sea Bed Condition

Abstract

In this study, structural design and strength evaluation of the jacket structure, which is a typical fixed offshore platform, was performed as part of the structural design study for acquiring the structural safety evaluation technology ofthe offshore plant. The basic geometry of the jacket structure is designed in accordance with the classification rules and general jacket design guidelines. General guidelines for designing steel offshore structures are given in ANSI/AISC [1] and Euro Code 3 [2]. The detailed guidelines for the design of steel offshore structures are applied in the API RP 2A WSD [3]. For the designed jacket, the structural strength was evaluated by performing the in-place analysis. The sea bed boundary condition suitable for the jacket design and strength evaluation was proposed by analysing the effect of the jacket structural strength and deformation according to the sea bed boundary condition of the pile fixed jacket.