STUDY OF THE AMOUNT AND DISTRIBUTION OF DECK MASS IN THE ASSESSMENT OF FIXED JACKET PLATFORM USING INCREMENETAL WAVE ANALYSIS

Offshore platforms may be exposed to waves and currents greater than design criteria in their lifetime. Due to the permanent wave, current and wind on the platforms,it is very important to study on these environmental load on the existing offshore platforms, to continue the operation of platforms. In order to assessment the performance of fixed jacket platforms against environmental wave, Golafshani et al.[1] have established Incremental Wave Analysis (IWA) that is based on Incremental Dynamic Analysis which is used for seismic assessment of building structures. IWA has been done and parameters of assessment were calculated. Moreover CWH accuracy under different deck mass has been studied.