| 随机冰载作用下海上固定平台管节点的疲劳寿命估算 |
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| 引用本文： | 方华灿,许发彦,陈国明.随机冰载作用下海上固定平台管节点的疲劳寿命估算[J].中国石油大学学报(自然科学版),1997(2). |
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| 作者姓名： | 方华灿 许发彦 陈国明 |
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| 作者单位： | 石油大学机电工程系 |
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| 摘 要： | 根据冰激振动理论，分析了海冰对海上钻井平台的不同破坏形式．为了解决海洋石油钢结构在低温冰载作用下的疲劳性能问题，进行了室温与低温下随机冰载作用对钢结构疲劳裂纹扩展的试验研究．根据试验结果，计算了平台管节点的疲劳累积损伤和随机冰载的等效应力，提出了综合计算等效应力幅的新方法，给出了管节点的疲劳寿命曲线及其计算参数．这种新的计算方法，考虑了冰载相对时间和相对冰厚的随机性，能提高寿命估算的精确度
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| 关 键 词： | 海上平台 钢 疲劳试验 估算 寿命 计算 |
FATIGUE LIFE ESTIMATION OF TUBULAR JOINTS OF OFFSHORE FIXED PLATFORM UNDER RANDOM ICE LOADS |
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| Fang Huacan petroleum mechanical engineering and petroleum drilling equipment for offshore.,Xu Fayan Chen Guoming.FATIGUE LIFE ESTIMATION OF TUBULAR JOINTS OF OFFSHORE FIXED PLATFORM UNDER RANDOM ICE LOADS[J].Journal of China University of Petroleum,1997(2). |
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| Authors: | Fang Huacan petroleum mechanical engineering and petroleum drilling equipment for offshore Xu Fayan Chen Guoming |
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| Affiliation: | Fang Huacan petroleum mechanical engineering and petroleum drilling equipment for offshore. Xu Fayan Chen Guoming |
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| Abstract: | The rupture forms of sea ice acted on tubular joint of offshore platform are analyzed. The test on fatigue crank propagation of steel structure under low temperature and random ice loads were carried out. According to the test results, the stress of the tubular joint was calculated. A new method for calculating effective stress is proposed. The relative curves of fatigue life and calculation parameters for tutular joint are presented. This method can give an accurate estimation, with consideration of random of relative ice width and ice loads time on the joint. |
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| Keywords: | Offshore platform Steel Fatigue test Estimation Life Calculation |
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