The Bohai Gulf in China is home to a marginal oil field that freezes during winters. The two key aims of the designers are to design both economical and ice-resistant offshore oil platforms. Originally, the jacket platforms were designed to withstand the extreme static ice force. However, severe ice-induced vibrations have been observed during the winters. Researchers have systematically studied the ice-induced vibration and the related approach to ice-resistant jacket platform design. As a part of these studies, this paper proposed an acceleration-oriented design optimization of ice-resistant jacket platforms in the Bohai Gulf. This approach focused on the dynamic performance of the jacket platforms in terms of the deck acceleration and employed the structural optimization technique to achieve an economical and rational design. The proposed design optimization accounts for the uncertainty of the ice environments and the variability of the ice-resistant structure during the optimization procedure by introducing a failure probability-based approach. This is used to determine the short-term dynamic ice case for dynamic analysis of the ice-resistant jacket platform. Finally, an example of a real ice-resistant jacket platform demonstrates the applicability and feasibility of the proposed method. This can help designers achieve a design that satisfies dynamic performance criteria while maintaining an acceptable weight.


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    Title :

    Acceleration-oriented design optimization of ice-resistant jacket platforms in the Bohai Gulf


    Additional title:

    Auf Beschleunigungen ausgerichtete Entwurfsoptimierung von ortsfesten eisbeständigen Offshore-Plattformen mit Mantel im Golf von Bohai (China)


    Contributors:
    Liu, Xiang (author) / Li, Gang (author) / Yue, Qianjin (author) / Oberlies, Robert (author)

    Published in:

    Ocean Engineering ; 36 , 17-18 ; 1295-1302


    Publication date :

    2009


    Size :

    8 Seiten, 23 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Research on short-term dynamic ice cases for dynamic analysis of ice-resistant jacket platform in the Bohai Gulf

    Liu, X. / Li, G. / Oberlies, R. et al. | British Library Online Contents | 2009


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    Wang, L. / Xu, J. / International Association for Hydraulic Research et al. | British Library Conference Proceedings | 1990


    Optimization of fixed offshore jacket platforms using optimality criteria

    Yadava, R. S. S. / Gurujee, C. S. / Central Water and Power Research Station | British Library Conference Proceedings | 1995


    Launching and upending of jacket platforms

    Soni, R. Y. / Central Water and Power Research Station | British Library Conference Proceedings | 1995