›› 2006, Vol. 27 ›› Issue (S1): 779-783.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on rising height of grout along a pile after grouting and effect of grout on soils

HUANG Sheng-gen   

  1. Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
  • Received:2006-03-09 Published:2006-12-15

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Abstract: Grout rising along a pile is a general phenomenon in the process of post-grouting. The grout flew upward along the weak layer under pressure, squeezing the soil to a larger diameter and improving the shaft friction. By analyzing the mechanism of post grouting and applying the Bingham constitutive model and flowing equation, the formula to calculate the grout rising height was given. The formula to calculate radial displacement of soils around a pile was given by applying cavity-expanding theory. Compared with the measured results of a project, the calculated values were satisfactory relatively.

Key words: bored pile, post-grouting, grout rising height, expanding

CLC Number: 

  • TU 472
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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[2] DAI Guo-liang, WAN Zhi-hui, ZHU Ming-xing, GONG Wei-ming, . The model of grout migration height for pressured grouting at pile tip based on time-dependent behavior of viscosity and its engineering application [J]. , 2018, 39(8): 2941-2950.
[3] LI Hong-jiang, TONG Li-yuan, LIU Song-yu, BAO Hong-yan, YANG Tao, . Parameter sensitivity of horizontal bearing capacity of large diameter and super-long bored pile [J]. , 2018, 39(5): 1825-1833.
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[5] WAN Zhi-hui, DAI Guo-liang, GONG Wei-ming, . Enhanced mechanism of post-grouting pile in coral-reef limestone formations [J]. , 2018, 39(2): 467-473.
[6] CUI Qiang, MENG Xian-qiao, YANG Shao-chun，. Experimental investigation of influence of embedment depth and expanding ratio upon ultimate uplift resistance of hole digging foundation in rock [J]. , 2016, 37(S2): 195-202.
[7] LI Yong-hui, ZHU Xiang, ZHOU Tong-he,. Experimental study of effects of pile tip post grouting on bearing characteristics of large-diameter bored pile [J]. , 2016, 37(S2): 388-396.
[8] LI Lin, LI Jing-pei, YUE Zhu-wen, TANG Jian-hua, . Mechanical mechanism of hole-wall stability of bored pile in saturated clay [J]. , 2016, 37(9): 2496-2504.
[9] LI Yong-hui , WANG Wei-dong , WU Jiang-bin，. A calculation method of pile shaft ultimate friction of tip post grouted super-long bored pile [J]. , 2015, 36(S1): 382-386.
[10] YAO Jian-ping , CAI De-gou , ZHU Jian , WANG Li-wei,. Research on post-grouting bored pile load-bearing characteristics [J]. , 2015, 36(S1): 513-517.
[11] LI Yong-hui ，WANG Wei-dong ，HUANG Mao-song ，GUO Yuan-cheng，. Experimental research on pile-soil interface shear behaviors of super-long bored pile [J]. , 2015, 36(7): 1981-1988.
[12] ZHU Nan, CUI Zi-zhi. Research on effect of post grouting at pile tip on bearing behavior of single pile [J]. , 2014, 35(S2): 267-271.
[13] ZHANG Long-yun , ZHANG Qiang-yong , LI Shu-cai , XUE Yi-guo,, . Analysis of impact of surrounding rock post-grouting for large oil cavern on its water seal ability based on fluid-solid coupling [J]. , 2014, 35(S2): 474-480.
[14] LIU Nian-wu , GONG Xiao-nan , YU Feng , FANG Kai , . Analysis of spatial effects in strutted excavation and related influential factors [J]. , 2014, 35(8): 2293-2298.
[15] DU Yi-Ming ，ZHENG Gang ，ZHANG Li-Ming，. Theoretical analysis of comprehensive coefficient of pile compression for super-long bored pile considering effect of deep excavation [J]. , 2014, 35(7): 2019-2028.
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