自升式钻井船插桩对邻近平台桩基影响的评价方法探讨
Discussion of methods evaluating the effects of the jack-up spudcan penetration on the adjacent platform pile
查看参考文献63篇
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文摘
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自升式钻井船被广泛用于中、浅水域油气钻井、勘探开发或平台维修等海洋工程。通常,钻井船靠作业臂工作,由于其极限长度有限,所以钻井船作业时经常紧邻固定式导管架海洋平台。软弱土层中,钻井船就位时插桩深度较深,插桩过程中大量土体被排开,致使邻近平台桩基可能承受很大的附加荷载,这些附加荷载与桩基原有的荷载相叠加,很有可能超出其原有设计承载能力,引起严重的工程安全隐患和经济损失。如何可靠地评估自升式钻井船插桩对邻近导管架平台桩基的影响,从而优化钻井船定位并指导导管架平台桩基础的早期设计,是我国当前海上油气开发亟需解决的一个难点问题,迄今为止尚没有形成一种被广泛认可的方法。基于此,系统阐述了评价自升式钻井船插桩对邻近桩基影响的方法,包括模型试验、简化理论方法和数值方法,分析了现有方法中存在的问题,并对未来的研究方向提出了建议,供读者参考。 |
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其他语种文摘
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Jack-up rig is always employed to some marine engineering, for example, oil and gas drilling, exploration and exploitation, and maintenance platform. Generally, since the jack-up rig works depending on the manipulator which has the limited length, it often works in close proximity to a permanent jacket platform. The jack-up spudcan penetrates deeply in the soft clay deposit when the jack-up rig is in place. A large volume of soil is displaced during the spudcan penetration, so that the adjacent pile may be subjected to excess induced loads. These loads added with the original pile loads may exceed the normal design bearing capacity, which may cause serious engineering safety hazard and economic losses. It is a challenge for the development of the oil and gas that how to reliably evaluate the effect of the jack-up spudcan penetration on the adjacent jacket platform pile, and then optimize the jack-up rig position and guide the early design of the jacket platform pile. There is no widely accepted method to date. Based on the fact, the paper elaborates the methods evaluating the effect of spudcan penetration on the adjacent pile, which include the model tests, simplified theory and numerical approaches, and this paper analyzes the existing problems for the present methods and gives some suggestions in regard to the further research, providing a reference for readers. |
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来源
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海洋通报
,2017,36(3):293-301 【核心库】
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DOI
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10.11840/j.issn.1001-6392.2017.03.007
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关键词
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自升式钻井船
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桩靴贯入
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导管架平台桩基
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土体大变形
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数值方法
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模型试验
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地址
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1.
中海油研究总院, 北京, 100028
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中国科学院力学研究所, 北京, 100910
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-6392 |
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学科
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海洋学 |
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基金
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中国海洋石油总公司综合科研项目
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中国博士后科学基金
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文献收藏号
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CSCD:6010868
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