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自升式平台穿刺计算方法探讨
海洋石油
2011年 31卷 第1期
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Title
Discussion on punch-through calculation method of jackup
Authors
Cao Shijing
Song Linsong
Li Jianbo
Zhou Yangrui
单位
中海油田服务股份有限公司, 河北燕郊 065201
Organization
China Oilfield Services Limited, Yanjiao Hebei 065201
摘要
自升式平台的穿刺会对平台结构或桩腿造成不同程度的损伤,因此非常有必要对作业井位进行插桩穿刺安全性评估。在总结国内外穿刺计算方法的基础上,首先分析了接近穿刺状态下上覆砂层的抗剪切能力,对桩基承载力公式进行了修正;然后对穿刺安全系数进行了探讨,推荐了平台作业期处于台风季时采用的安全系数;最后提出了更完善的穿刺分析和作业流程,并以HYSY9××平台在某井位插桩计算为例验证了所提出的方法。
Abstract
Jackup installation is often faced with potential punch-through problems, which could produce fatalities on the legs or jacking systems.Thus it is essential to perform installation safety assessment on site specifically before deployment.Based on research of punch-through calculation methods in home and abroad, investigations on shear force of the firm layer, ultimate bearing capacity and safety factor are discussed.An analysis flow chart for potential punch-through site is also proposed.Finally, this analysis method is illustrated with HYSY9××installation as an example.
关键词：
自升式平台;
穿刺;
安全系数;
最大承载力;
Keywords:
jackup;
punch-through;
safety factor;
ultimate bearing capacity;
DOI
https://doi.org/10.3969/j.issn.1008-2336.2011.01.086
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