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无黏性土地区大直径超长钻孔灌注桩桩端压浆后的承载性能研究

储诚富, 李小春, 鹿立好, 席培胜

储诚富, 李小春, 鹿立好, 席培胜. 无黏性土地区大直径超长钻孔灌注桩桩端压浆后的承载性能研究[J]. 岩土工程学报, 2011, 33(sup2): 388-391.
引用本文: 储诚富, 李小春, 鹿立好, 席培胜. 无黏性土地区大直径超长钻孔灌注桩桩端压浆后的承载性能研究[J]. 岩土工程学报, 2011, 33(sup2): 388-391.
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CHU Cheng-fu, LI Xiao-chun, LU Li-hao, XI Pei-sheng. Load bearing behavior of pile tip post-grouting super-long large-diameter bored piles in cohesionless soil[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 388-391.
Citation: CHU Cheng-fu, LI Xiao-chun, LU Li-hao, XI Pei-sheng. Load bearing behavior of pile tip post-grouting super-long large-diameter bored piles in cohesionless soil[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 388-391.
shu

无黏性土地区大直径超长钻孔灌注桩桩端压浆后的承载性能研究  English Version

  • 1.合肥工业大学资源与环境工程学院,安徽 合肥 230009 ； 2. 中国科学院武汉岩土力学研究所,湖北 武汉 430071 ； 3. 亳州市恒达公路工程勘察设计院,安徽 亳州 236800 ； 4. 安徽建筑工业学院土木工程学院,安徽 合肥 230022

详细信息
    作者简介:

    储诚富 (1975 – ) ,男,安徽潜山人,博士研究生,讲师,主要从事桩基工程、地基处理等方面的研究与教学工作。

  • 中图分类号: TU47

Load bearing behavior of pile tip post-grouting super-long large-diameter bored piles in cohesionless soil

  • 1. School of Resources & Environmental Engineering, Hefei University of Technology, Hefei 230009, China; 2. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 3. Bozhou Hengda Highway Design Institute, Bozhou 230000, China; 4. School of Civil Engineering, Anhui University of Architecture, Hefei 230022, China

摘要

    摘要
  • 摘要: 根据现场试桩试验,分析研究了在无黏性土地区后压浆技术对大直径超长钻孔灌注桩承载力性状的影响。试验结果表明：大直径超长钻孔灌注桩桩端后压浆水泥浆液上返高度在该类地质条件下达 16.0 m 左右,压浆后极限承载力测试值是压浆前的 1.59 倍,压浆后端阻力是压浆前的 3.23 倍,压浆后桩侧阻力是压浆前的 1.23 倍。表明利用后压浆技术达到了节约工程投资、提高工程施工质量及可靠性的目的,并产生了较大的技术经济效益和良好的社会环境效益,该结论对相同地区同类基桩的设计、施工和深入研究具有一定的指导意义。
    Abstract: According to the results of load tests on piles, the influence of pile tip post-grouting on the load bearing behavior of super-long large-diameter bored piles in cohesionless soil is analyzed. The test results show that the grouting cement can reach 16.0 m from the pile tip under the geological and construction conditions. The values of the ultimate bearing capacity, tip resistance and skin friction of the test piles after grouting are 1.59, 3.23 and 1.23 times those of bored piles without grouting. A conclusion is drawn that by using the tip post-grouting technique, it saves investment, improves construction quality and reliability, and brings considerable economic benefits and good socio-environment effects. Therefore it is instructive for the design and construction of similar piles.
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    • 参考文献(8)
  • [1] 布克明 , 尹坤龙 , 龚维明 . 钻孔后压浆技术在苏通大桥基础工程中的应用 [J]. 岩土力学 , 2008, 29 (6): 1697 – 1700. (BU Ke-ming, YIN Kun-long, GONG Wei-ming. Post-grouting technique for piled foundation case history of Su-Tong Bridge[J]. Rock and Soil Mechanics, 2008, 29 (6): 1697 – 1700. (in Chinese))
    [2] 黄建华 . 灌注桩后压浆技法抬升效应机理分析 [J]. 工业建筑 , 2009, 39 ( 增刊 ): 709 – 713. (HUANG Jian-hua. Elevated effect mechanism analysis of posterior grouting bored piles[J]. Industrial Construction, 2009, 39 (S0): 709 – 713. (in Chinese))
    [3] 何 剑 . 后注浆钻孔灌注桩承载性状试验研究 [J]. 岩土工程学报 , 2002, 24 (6): 743 – 746. (HE Jian. Experimental research on vertical bearing properties of base-grouting bored cast-in-place pile[J]. Chinese Journal of Geotechnical Engineering, 2002, 24 (6): 743 – 746. (in Chinese))
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    [5] 方鹏飞 , 姜 珂 , 朱向荣 , 等 . 软土地区桩端后注浆桩承载性状对比试验研究 [J]. 工程地质学报 , 2009, 17 (2): 280 – 283. (FANG Peng-fei, JIAN Ke, ZHU Xiang-rong, et al. Comparison test studies on the bearing characteristics of post-grouted bored piles in soft soil[J]. Journal of Engineering Geology, 2009, 17 (2): 280 – 283. (in Chinese))
    [6] 张阳明 , 管典志 . 钻孔灌注桩后压浆作用机理分析 [J]. 哈尔滨工业大学学报 , 2003, 35 (7): 890 – 892. (ZHANG Yang-ming, GUAN Dian-zhi. Impacting mechanism of post-grouting of bored cast-in-place piles[J]. Journal of Harbin Institute of Technology, 2003, 35 (7): 890 – 892. (in Chinese))
    [7] 龚维明 , 于清泉 , 戴国亮 . 越南大翁桥桩基承载性能试验研究 [J]. 岩土力学 , 2009, 30 (2): 558 – 562. (GONG Wei-ming, YU Qing-quan, DAI Guo-liang. Experimental research on bearing behavior of piles with self-balanced method in Daweng Bridge in Vietnam[J]. Rock and Soil Mechanics, 2009, 30 (2): 558 – 562. (in Chinese))
    [8] 陈志坚 , 韩学伟 , 白炳东 . 大直径超长钻孔灌注桩桩端后压浆机理探讨 [J]. 河海大学学报 , 2007, 5 (4): 409 – 412. (CHEN Zhi-jian, HAN Xue-wei, BAI Bing-dong. Discussion on post-grouting mechanism at end of super-long large-diameter bored piles[J]. Journal of Hohai University, 2007, 5 (4): 409 – 412. (in Chinese))
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出版历程
  • 收稿日期:  2011-08-03
  • 发布日期:  2011-12-06

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