Dynamic analysis of the gravity platform under random wave load

On the situation of energy shortage all over the world, the marginal oilfields attracted more and more attention. In our country, there are many developed and undeveloped marginal oilfields. Based on its own advantages, the gravity platform has a good application prospect in the marginal oilfields. The most important load in marine environment is wave load. Consider the randomness of the wave load, carry on the modeling of a gravity platform by the finite element analysis software ANSYS. Do some essential modal analysis when the model is established. Analysis the first ten steps models based on its own dynamic characteristics. Then get the natural frequencies and mode shapes of the gravity platform. Consider the wave load is random, and the dynamic responses of the platform are obtained. The results have some guiding significance for the construction and application of gravity platform. The dynamic analysis of a gravity platform plays a valuable role in oil storage and marine environmental protection. And it also has some instructive meanings for the development and utilization of the marginal oilfields.