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| 自升式平台桩脚在含硬壳层地基中的插深分析 | |
| 引用本文： | 李洪,邓金根,孙焱,李炎军.自升式平台桩脚在含硬壳层地基中的插深分析[J].海岸工程,2010,29(2):31-37. |
| 作者姓名： | 李洪 邓金根 孙焱 李炎军 |
| 作者单位： | 1. 北京石油机械厂,北京,100083 2. 中国石油大学(北京)岩石力学实验室,北京,102249 3. 中国石化集团国际石油勘探开发有限公司,北京,100083 4. 中国海洋石油,湛江分公司,广东,湛江,524057 |
| 摘 要： | 存在硬壳层的层状地基承载能力分析是自升式钻井平台桩脚插深分析的关键,但是目前对硬壳层承载能力的确定还没有成熟可行的理论计算方法。一般的针对非均质层状地基的承载力计算方法,因参数较多,计算步骤繁琐,很难广泛应用于实际的平台桩脚入泥深度分析中。文中主要介绍了存在硬壳层的层状地基承载力的分析方法与过程,根据应力扩散原理推导并做适当的简化得到硬壳层承载力修正方法。简化后的修正方法能满足一般硬壳层承载力分析的需要,并使平台插桩深度分析计算过程变得简便。通过在实际工程的应用,得到的实测结果与理论计算值也较为一致,说明了用此方法分析硬壳层地基的平台插桩是合理、实用的。 |
| 关 键 词： | 硬壳层 自升式钻井平台 地基承载力 桩脚入泥深度 |
Analysis on Penetration Depth of Jack-up Leg Footing in Hard Soil Shell over Soft Stratum |
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| LI Hong,DENG Jin-gen,SUN Yan,LI Yan-jun.Analysis on Penetration Depth of Jack-up Leg Footing in Hard Soil Shell over Soft Stratum[J].Coastal Engineering,2010,29(2):31-37. | |
| Authors: | LI Hong DENG Jin-gen SUN Yan LI Yan-jun |
| Institution: | 1.Beijing Petroleumn Machinery Factory,Beijing 100083,China;2.College of Petroleum Engineering,China University of Ptroleum(Beijing),Beijing 102249,China;3.International Petroleum Exploration Production Corporation Ltd.,SINOPEC,Beijing 100083,China;4.Zhanjiang Branch of China National Offshore Oil Coporation Limited,Zhanjiang 524057,China) |
| Abstract: | Analysis on the bearing capacity of a hard soil shell over a layered foundation is the key to the calculation of penetration depth of jack-up leg footing.However at present no feasible theoritical method is available to calculate the bearing capacity of a hard soil shell in seabed.Normally in the method aiming to use for the inhomogeneous layered foundation,too many parameters and too complex formula are involved to be widely used in the penetration depth analysis for a practical platform leg footing.In the paper,a method for calculating the bearing capacity of a hard soil shell overlying on a soft stratum is introduced.The method is derived from the theory of stress dispersion and further simplified.This simplified method can meet the need for analysis of the bearing capacity of a hard soil shell and make it simple to calculate the penetration depth of jack-up leg footing.It is learnt from the application in the practical engineering that the calculating results are consistent to the measurements.Therefore the method is reasonable and practical to analyze the penetration depth of jack-up leg footing. |
| Keywords: | hard soil shell jack-up drilling rig foundation bearing capacity penetration depth of leg footing |
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