| 基于圆孔扩张理论顶部加箍碎石桩承载力计算 |
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| 引用本文： | 陈昌富,李其泽.基于圆孔扩张理论顶部加箍碎石桩承载力计算[J].湖南大学学报(自然科学版),2011,38(10):7-12. |
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| 作者姓名： | 陈昌富 李其泽 |
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| 作者单位： | 湖南大学岩土工程研究所; |
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| 基金项目： | 国家863计划资助项目(2006AA11Z104); 湖南省自然科学基金资助项目(03JJY3087) |
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| 摘 要： | 在碎石桩顶部设置土工合成材料或预制混凝土套筒,可有效改善其承载特性.为研究加箍段对碎石桩承载力的影响,采用Mohr-Coulomb屈服准则,将考虑土体自重效应影响的圆孔扩张理论引入到加箍碎石桩复合地基的承载力计算中,分析了塑性区半径随深度发生变化的规律,得到了复合地基承载力计算公式.在此基础上,进一步研究了扩张重叠作用...
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| 关 键 词： | 加箍碎石桩 复合地基 承载力 圆孔扩张理论 扩张重叠 |
Calculation of Bearing Capacity of Geosynthetic-encased Gravel Pile Based on Cavity Expansion Theory |
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| CHEN Chang-fu,LI Qi-ze.Calculation of Bearing Capacity of Geosynthetic-encased Gravel Pile Based on Cavity Expansion Theory[J].Journal of Hunan University(Naturnal Science),2011,38(10):7-12. |
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| Authors: | CHEN Chang-fu LI Qi-ze |
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| Institution: | CHEN Chang-fu,LI Qi-ze(Geotechnical Engineering Institute,Hunan Univ,Changsha,Hunan 410082,China) |
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| Abstract: | In order to improve the bearing capacity,geotechnical engineers often take geosynthetic-encased measures at the top of the gravel pile.In order to analyze the influence on the ultimate bearing capacity of geosynthetic-encased gravel pile based on the column cavity expansion theorem conside the influence of the soil gravidity stress,the radius of the plastic zone and the bearing capacity calculation method were deduced when Mohr-Coulomb yield criterion was adopted.A new calculation formula based on the model... |
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| Keywords: | geosynthetic-encased composite foundation bearing capacity cavity expansion theory expansion overlapped |
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