| 加筋碎石桩承载力计算 |
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| 引用本文： | 赵明华,陈庆,张玲,马缤辉.加筋碎石桩承载力计算[J].公路交通科技,2011,28(8):7-12. |
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| 作者姓名： | 赵明华 陈庆 张玲 马缤辉 |
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| 作者单位： | 湖南大学岩土工程研究所,湖南长沙,410082 |
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| 基金项目： | 国家高技术研究发展计划(八六三计划)项目(2006AA11Z104) |
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| 摘 要： | 分析了加筋碎石桩复合地基的承载机理,探讨了加筋碎石桩复合地基的几种破坏模式.在不同的破坏模式下根据极限平衡理论导出了加筋碎石桩单桩极限承载力计算公式,破坏模式1主要由格栅套筒抗拉强度控制,破坏模式2由加筋段桩体侧摩阻力和非加筋段桩体鼓胀破坏前向上提供的端承力共同控制.实例计算表明,加筋碎石桩的承载力比普通碎石桩的承载力...
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| 关 键 词： | 道路工程 加筋碎石桩 极限平衡 破坏模式 土工格栅 极限承载力 |
Calculation of Bearing Capacity of Geosynthetic-encased Stone Columns |
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| ZHAO Minghua,CHEN Qing,ZHANG Ling,MA Binhui.Calculation of Bearing Capacity of Geosynthetic-encased Stone Columns[J].Journal of Highway and Transportation Research and Development,2011,28(8):7-12. |
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| Authors: | ZHAO Minghua CHEN Qing ZHANG Ling MA Binhui |
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| Institution: | ZHAO Minghua,CHEN Qing,ZHANG Ling,MA Binhui(Geotechnical Engineering Institute,Hunan University,Changsha Hunan 410082,China) |
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| Abstract: | The bearing mechanism of composite foundation of geosynthetic-encased stone columns was analyzed,and several kinds of failure mode of the composite foundation were investigated.In different failure modes,according to the limit equilibrium theory,a calculation formula of the ultimate bearing capacity of single geosynthetic-encased stone column was proposed.Failure mode 1 is mainly controlled by the tensile strength of geogrid sleeve,and failure mode 2 is controlled by the pile-lateral friction of geosyntheti... |
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| Keywords: | road engineering geosynthetic-encased stone column limit equilibrium failure mode geogrid bearing capacity |
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