| 长钻孔灌注桩后注浆深度及数值模拟研究 |
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| 引用本文： | 安爱军,李亮,邹金锋,肖华溪,罗恒.长钻孔灌注桩后注浆深度及数值模拟研究[J].铁道科学与工程学报,2011(2):53-58. |
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| 作者姓名： | 安爱军 李亮 邹金锋 肖华溪 罗恒 |
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| 作者单位： | 中南大学土木建筑学院;湖南省交通规划勘察设计院; |
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| 基金项目： | 铁道部科技重点资助项目(2008G032-3); 西部交通建设科技项目(2006318802111) |
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| 摘 要： | 对钻孔灌注桩后注浆深度时的桩顶位移进行了数值计算.当桩端和桩侧注浆的浆液上升55 m时,桩顶荷载为700t时的未注浆桩桩顶位移为9.357 mm,桩侧注浆的桩顶位移为6.99mm,桩端注浆的桩顶位移为7.11mm.未注浆桩的计算极限承载力为l300t,桩侧注浆桩的极限承载力为l800t,桩端注浆桩的极限承载力为l700...
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| 关 键 词： | 深厚软土 后注浆 有限差分法 钻孔灌注桩 |
Numerical study on depth of post-grouting in-situ of length bored pile |
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| AN Ai-jun,LI Liang,ZOU Jin-feng,XIAO Hua-xi,LOU Heng.Numerical study on depth of post-grouting in-situ of length bored pile[J].Journal of Railway Science and Engineering,2011(2):53-58. |
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| Authors: | AN Ai-jun LI Liang ZOU Jin-feng XIAO Hua-xi LOU Heng |
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| Institution: | AN Ai-jun1,LI Liang1,ZOU Jin-feng1,2,XIAO Hua-xi1,LOU Heng1(1.School of Civil and Architectural Engineering,Central South University,Changsha 410075,China,2.Hunan Provincial Communicaitons Planning,Survey and Design Institute,Changsha 410008,China) |
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| Abstract: | The pile top displacement of bored pile was analyzed by numerical simulation.Numerical analysis is performed on ultimate bearing capacity of bored pile.The results show that,when the load at pile top is equal to 700 t,the pile top displacement of un-grouting pile is 9.357 mm,while that of pile-side grouting is 6.99 mm,pile-tip grouting is 7.11mm(serum migrating up to 55 m),and that of combined grouting is 6.78 mm.Furthermore,the pile top displacement declines by 2.367,2.247 and 2.577 mm respectively.The cal... |
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| Keywords: | deep soft soil post-grouting the finite difference method bored pile |
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