To study the effect of attached marine growth on the structural performance of jacket platform in Bohai Sea,the sensitivity analysis was conducted on one typical 4-legged jacket platform with different marine growth thickness and density,based on the on-site measurement data of marine growth attached to the jacket in the Bohai oilfield.The analysis results showed that the environmental load on the platform increased with the increase of marine growth thickness,while the marine growth densi-ty has no effect on environmental loads.The structural UC value and pile head force increased with the increase of marine growth thickness and density.The joint UC value increased with the increase of marine growth thickness,while the joint UC value re-mains almost unchanged in the case of density.The top three natural period slightly increases with the increase of the thickness and density of marine growth.The fatigue life gradually decreases as the thickness of marine growth increases,and is almost unaf-fected by density.The ultimate bearing capacity of the platform is not affected by marine growth.
维普
万方数据