| 复杂地层中自升式平台插桩的数值模拟 |
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| 引用本文： | 殷齐麟, 董胜, 樊敦秋. 复杂地层中自升式平台插桩的数值模拟[J]. 工程力学, 2016, 33(9): 204-211. DOI: 10.6052/j.issn.1000-4750.2015.01.0037 |
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| 作者姓名： | 殷齐麟 董胜 樊敦秋 |
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| 作者单位： | 1.中国海洋大学山东省海洋工程重点实验室, 山东, 青岛 266100;;2.中国海洋大学工程学院, 山东, 青岛 266100;;3.中石化胜利石油工程有限公司钻井工艺研究院, 山东, 东营 257017 |
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| 基金项目： | 国家自然科学基金项目（51279186，51479183） |
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| 摘 要： | 以胜利9号平台在老174号井位插桩过程为例，基于RITSS大变形数值计算方法，建立了自升式平台桩靴贯入多层地基的有限元模型，研究该平台插桩过程中的土体变形以及地基承载力随深度的变化规律。与SNAME（美国造船与轮机工程师学会）规范推荐的桩靴插桩过程地基承载力公式的计算结果进行对比，规范结果与数值结果的规律较为一致，数值上相差10%，验证了RITSS方法研究桩靴在软硬相间地基上插桩的有效性。结果表明：RITSS数模方法可以有效地模拟自升式平台插桩过程中各个土层的变形、土体流动，并得到合理的地基承载力结果；对于砂土层下卧软土层地基，可以得到承载力峰值。
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| 关 键 词： | 插桩 地基承载力 多层地基 RITSS方法 SNAME规范 |
| 收稿时间： | 2015-01-13 |
| 修稿时间： | 2015-08-06 |
NUMERICAL SIMULATION OF PENETRATION OF JACK-UP PLATFORM IN COMPLEX FOUNDATION SOILS |
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| YIN Qi-lin, DONG Sheng, FAN Dun-qiu. NUMERICAL SIMULATION OF PENETRATION OF JACK-UP PLATFORM IN COMPLEX FOUNDATION SOILS[J]. Engineering Mechanics, 2016, 33(9): 204-211. DOI: 10.6052/j.issn.1000-4750.2015.01.0037 |
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| Authors: | YIN Qi-lin DONG Sheng FAN Dun-qiu |
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| Affiliation: | 1.Shandong Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao, Shandong 266100, China;;2.College of Engineering, Ocean University of China, Qingdao, Shandong 266100, China;;3.Drilling Technology Research Institute of Shengli Petroleum Engineering Corporation Limited, SINOPEC, Dongying, Shandong 257017, China |
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| Abstract: | Based on the RITSS large deformation numerical method, using as an example the penetration process of Shengli 9th platform in a complex multi-layer foundation at the Old 174th drilling location, this paper studies the laws governing soil deformation and the foundation bearing capacity profile. The results of the calculation formulas recommended by SNAME are also compared with the results of the RITSS model. The laws governing foundation bearing capacity from the two methods are consistent (having a 10% difference numerically). The effectiveness of RITSS method is proved in modeling the spudcan penetration process in a foundation with a soft and hard interphase. The results show that the RITSS numerical method is an efficient method for modeling soil movement and the laws governing the deformation of each soil layer. The proposed numerical method is capable of obtaining reasonable values for the bearing capacity of a foundation. The peak value of a bearing capacity profile is obtained for sand overlying a clay foundation. |
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| Keywords: | spudcan penetration bearing capacity multi-layer foundation RITSS method SNAME |
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