| 半潜式平台垂向运动对气隙影响的概率统计分析 |
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| 引用本文： | 冯雪磊,肖龙飞,寇雨丰.半潜式平台垂向运动对气隙影响的概率统计分析[J].海洋工程,2014,32(4):11-17. |
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| 作者姓名： | 冯雪磊 肖龙飞 寇雨丰 |
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| 作者单位： | 上海交通大学海洋工程国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(51239007) |
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| 摘 要： | 应用矩和L矩方法以及二次转换方程,基于模型试验数据的概率统计分析,研究半潜式平台在作业工况和生存工况下的气隙响应,以及平台垂向运动对立柱周围不同位置处的波浪升高和气隙的影响。结果表明,垂向运动总体上能够增加气隙,海况越恶劣,增加程度越明显;在不同浪向下对不同位置的气隙影响有差别,后立柱周围的波浪升高和气隙受平台运动的影响相比前立柱更为显著;同时,平台垂向运动会引起立柱周围波浪升高的非线性增强。
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| 关 键 词： | 半潜式平台 气隙 垂向运动 统计分析 |
Statistical analysis on the influence of vertical motions on airgap of a semisubmersible |
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| FENG Xue-lei,XIAO Long-fei and KOU Yu-feng.Statistical analysis on the influence of vertical motions on airgap of a semisubmersible[J].Ocean Engineering,2014,32(4):11-17. |
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| Authors: | FENG Xue-lei XIAO Long-fei and KOU Yu-feng |
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| Institution: | State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | Based on statistics of a model test and by using a moment/L-moment estimation method and a quadratic transformative equation, this paper mainly investigates the influence of vertical motions of a semi-submersible on airgap for operational cases and survival cases. It is concluded that vertical motions can generally increase airgap and the increased quantity is positively correlated to the severity of sea states. There exists a varied influence on airgap of vertical motions for different wave headings and locations: at back columns, airgap conditions can be much worse than those at front columns. Additionally, vertical motions can strengthen the non-linearity of waves around columns. |
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| Keywords: | semi-submersible platform airgap vertical motion statistical analysis |
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