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Volume 38 Issue 10
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LU Wei, QIN Jing, LOU Peng, LI Hai-ling, GAO Pei-sheng. Method for anchorage body diameter of jet grouting anchor and tests on influence parameters[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(10): 1783-1788. DOI: 10.11779/CJGE201610006
Citation: LU Wei, QIN Jing, LOU Peng, LI Hai-ling, GAO Pei-sheng. Method for anchorage body diameter of jet grouting anchor and tests on influence parameters[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(10): 1783-1788. DOI: 10.11779/CJGE201610006
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Method for anchorage body diameter of jet grouting anchor and tests on influence parameters

  • 1. China Institute of Water Resources and Hydropower Research, Beijing 100048, China;
    2. Beijing IWHR Corporation, Beijing 100048, China

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  • Received Date: August 31, 2015
  • Published Date: October 24, 2016
    Graphical Abstract
    • Abstract
  • The anchorage body diameter is the key factor of the pullout resistance and the reliability of jet grouting anchor. Based on the physical process of jet grouting breaking soil, a convenient calculation method for anchorage body diameter for application is proposed. For the support of 32 m deep-foundation pit in Sanmen Nuclear Power Station, in situ tests are designed to validate the proposed method by comparing 3 excavated anchors of the 12 test anchors. The effect of jet parameters on the anchorage body diameter is also analyzed. The results reveal that under the influences of incomplete breadage and large particle sedimentation of soil, the calculated diameters are smaller than the test data, and the difference between them is larger when the jet pressure is lower and the drilling speed is faster. The jet grouting anchor with flake burrs in surface is approximate to ellipse in shape because of the spiral motion and vibration of the drill pipe. The higher the jet pressure, the faster the drilling speed, leading to more irregular shape. Under the same condition, reaming quality is better by increasing the nozzle diameter and using two times of reaming. In order to improve the reaming efficiency and to avoid the appearance of discontinuous jet profile, the drilling speed should be designed in a suitable range.
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    • References (15)
  • [1]
    JGJ79—2012 建筑地基处理技术规范[S]. 2012. (JGJ79—2012 Technical code for ground treatment of buildings[S]. 2012. (in Chinese))
    [2]
    JGJ/T282—2012 高压喷射扩大头锚杆技术规程[S]. 2012. (JGJ/T282—2012 Technical specification for underreamed anchor by jet grouting[S]. 2012 (in Chinese))
    [3]
    陈志博, 王向军, 丁文其. 大直径可回收锚杆力学特性数值分析[J]. 岩土工程学报, 2012, 34(增刊1): 172-176. (CHEN Zhi-bo, WANG Xiang-jun, DING Wen-qi. Numerical analysis of mechanical behaviors of large-diameter recoverable anchors[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(S1): 172-176. (in Chinese))
    [4]
    张跃进, 曾纪文. 深厚淤泥层基坑开挖动态监测与应急处理[J]. 岩土工程学报, 2014, 36(增刊1): 202-207. (ZHANG Yue-jin, ZENG Ji-wen. Dynamic monitoring and emergency treatment of deep foundation pit in ultra deep silt layer[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(S1): 202-207. (in Chinese))
    [5]
    胡建林, 张培文. 扩体型锚杆的研制及其抗拔试验研究[J]. 岩土力学, 2009, 30(6): 1615-1619. (HU Jian-lin, ZHANG Pei-wen. Development of underreamed anchor and experimental study of uplift resistance[J]. Rock and Soil Mechanics, 2009, 30(6): 1615-1619. (in Chinese))
    [6]
    郭 钢, 刘 钟, 李永康, 等. 扩体锚杆拉拔破坏机制模型试验研究[J]. 岩石力学与工程学报, 2013, 32(8): 1677-1684. (GUO Gang, LIU Zhong, LI Yong-kang, et al. Model test research on failure mechanism of underreamed ground anchor[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(8): 1677-1684. (in Chinese))
    [7]
    SHIBAZAKI M. State of practice of jet grouting[C]// Third International Conference on Grouting and Ground Treatment. ASCE, New Orleans, 2003: 198-217.
    [8]
    MODONI G, CROCE P, MONGIOVI L. Theoretical modeling of jet grouting[J]. Géotechnique, 2006, 56(5): 335-347.
    [9]
    FLORA A, MODONI G, LIRER S, et al. The diameter of single, double and triple fluid jet grouting columns: prediction method and field trial results[J]. Géotechnique, 2013, 63(11): 934-945.
    [10]
    马 飞, 宋志辉. 水射流动力特性及破土机理[J]. 北京科技大学学报, 2006, 28(5): 413-416. (MA Fei, SONG Zhi-hui. Dynamic property and breaking soil mechanism of water jet[J]. Journal of University of Science and Technology Beijing, 2006, 28(5): 413-416. (in Chinese))
    [11]
    马 飞, 高国华, 王萍辉, 等. 水射流土层扩孔技术及影响因素[J]. 北京科技大学学报, 2008, 30(6): 585-589. (MA Fei, GAO Guo-hua, WANG Ping-hui, et al. Water jet soil reaming technology and its influencing factors[J]. Journal of University of Science and Technology Beijing, 2008, 30(6): 585-589. (in Chinese))
    [12]
    SHEN S L, WANG Z F, SUN W J, et al. A field trial of horizontal jet grouting using the composite-pipe method in the soft deposits of Shanghai[J]. Tunnelling and Underground Space Technology, 2013, 35: 142-151.
    [13]
    王志丰, 沈水龙, 许烨霜. 基于圆形断面自由紊动射流理论的旋喷桩直径计算方法[J]. 岩土工程学报, 2012, 34(10): 1957-1960. (WANG Zhi-feng, SHEN Shui-long, XU Ye-shuang. An approach to calculate diameter of jet-grouted columns based on turbulent flow theory[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(10): 1957-1960. (in Chinese))
    [14]
    崔江余, 贺长俊, 杨桂芹. 旋喷自带钢绞线锚杆现场试验研究[J]. 岩土工程学报, 2009, 31(12): 1947-1951. (CUI Jiang-yu, HE Chang-jun, YANG Gui-qin. Field tests on jet-grouting self-boring anchors[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(12): 1947-1951. (in Chinese))
    [15]
    李玉柱, 苑明顺. 流体力学[M]. 北京: 高等教育出版社, 2008: 179-182. (LI Yu-zhu, YUAN Ming-shun. Fluid mechanics[M]. Beijing, Higher Education Press, 2008: 179-182. (in Chinese))
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