SEISMIC RESPONSE OF TYPICAL FIXED JACKET TYPE OFFSHORE PLATFORM UNDER SEA WAVES: A REVIEW

Offshore platforms in seismically active areas should be designed to service severe earthquake excitations with no global structural failure. In seismic design of offshore platforms, it is often necessary to perform a dynamic analysis .This study summarizes the nonlinear dynamic analysis of a 3-D model of a typical Jacket-Type platform which is installed in Persian Gulf (SPD1), under simultaneously wave and earthquake loading has been conducted. It is assumed that they act in the same and different directions. The structure is modeled by finite element software (ANSYS Inc.). It is concluded that when the longitudinal components of the earthquake and wave are in different directions, an increase on the response of platform can be seen.