The economical efficiency and structural characteristics of offshore platforms with bucket foundations is an important concern in the oil/gas exploration of marginal oil fields. JZ9-3E riser platform, which was set up in the Bohai Sea, is such structure. However, very severe ice-induced vibrations were observed. A finite element model was established to analyze the structural characteristics for this platform. A good comparison between modal analysis and full-scale observation was obtained, which shows the dynamic similarity between the numerical model and the prototype platform structure. To reduce the ice-induced vibrations, a fixed ice-breaking cone was installed on this platform. Both of the FE model results and the observed data showed that the fixed ice-breaking cone can isolate the ice-induced vibrations effectively.
- Ocean, Offshore and Arctic Engineering Division
Ice Induced Vibration and Its Isolation of an Offshore Platform With Bucket Foundations in Marginal Oilfields
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Wang, S, & Yue, Q. "Ice Induced Vibration and Its Isolation of an Offshore Platform With Bucket Foundations in Marginal Oilfields." Proceedings of the ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 4. Shanghai, China. June 6–11, 2010. pp. 811-815. ASME. https://doi.org/10.1115/OMAE2010-20592
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