Engineering seismic problems of the offshore oil platforms

The seismic design of offshore oil platform structure requires some parameters such as peak ground motion value, response spectra, duration, and acceleration time-history. Because of the particularity of the structure and form of offshore oil platforms, and the seismic environment in Chinese sea area, there are some particular measures to be taken in seismic effect analysis of the offshore oil platforms. In this paper, some engineering seismic problems involved in the seismic effect analysis of the offshore oil platforms are discussed, including design ground level, scenario earthquake, ground motion attenuation relation, long period ground motion, and so on.