| 基于可靠度的导管架海洋平台结构优化设计研究 |
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| 引用本文： | 翟钢军.基于可靠度的导管架海洋平台结构优化设计研究[J].中国海洋平台,2005,20(1):29-34,50. |
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| 作者姓名： | 翟钢军 |
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| 作者单位： | 大连理工大学,大连116023 |
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| 基金项目： | 国家自然科学基金资助重大项目(59895410)。 |
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| 摘 要： | 根据导管架平台结构可靠性指标及功能要求的不同,建立了基于构件可靠度的平台优化设计模型和基于体系可靠度的平台优化设计模型。探讨了导管架平台结构主要失效模式和平台结构期望失效费用的确定方法,对平台构件及结构体系可靠性指标进行了灵敏度分析,给出了平台结构可靠性优化设计流程。以胜利油田埕北11号井采油平台为例进行可靠性优化设计,并与确定性优化设计结果进行比较,算例结果显示确定性优化设计很难对平台结构的风险水平加以控制,基于体系可靠度的平台优化设计能在平台结构的安全性与经济性之间选择一种合理的平衡,使平台的设计风险透明化,力求以最小的投资风险,使平台完成预定的功能,获得最大的经济效益,因此,进行可靠性优化设计是非常必要的。
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| 关 键 词： | 导管架平台 结构优化设计 结构可靠度 可靠性灵敏度分析 |
| 文章编号： | 1001-4500(2005)01-0029-06 |
RELIABILITY-BASED ON STRUCTURE OPTIMUM DESIGN OF OFFSHORE JACKET PLATFORMS |
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| ZHAI Gangjun.RELIABILITY-BASED ON STRUCTURE OPTIMUM DESIGN OF OFFSHORE JACKET PLATFORMS[J].China offshore Platform,2005,20(1):29-34,50. |
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| Authors: | ZHAI Gangjun |
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| Abstract: | According to the diversity of structure reliability index and functional requirement of offshore jacket platform, the modes of structural optimum design of offshore jacket platforms are established based on the component reliability and the structural system reliability respectively. The confirm methods of the significant failure modes and the expecting failure cost of offshore jacket platforms are discussed. The reliability index sensitivities of the component and the structure system of jacket platform are analyzed. The flow chart of the reliability optimum design for offshore jacket platform is presented. The Chengbei No. 11 offshore platform, which lies in the Shengli oil field, is designed with the reliability optimum mode above,and the result showns that this kind of design is necessary. |
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| Keywords: | offshore jacket platforms structure optimum design structure reliability reliability sensitivity analysis |
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