›› 2010, Vol. 31 ›› Issue (8): 2535-2540.

• Geotechnical Engineering • Previous Articles     Next Articles

Theoretical study of climbing height of grout in pile-bottom base grouting

ZHANG Zhong-miao, ZOU Jian, LIU Jun-wei, HE Jing-yi   

  1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2009-03-04 Online:2010-08-10 Published:2010-08-30

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Abstract:

Basing on the assumptions of exponential fluid and narrow plate model, formula of climbing height in base post-grouting is deduced. It is shown that the climbing height is mainly related to grouting pressure, pile length, pile diameter and mudcake thickness. The climbing height increases with the decrease of soil deformation modulus and pile length. And it increases with the increase of grouting pressure and mudcake thickness. At last, the formula of climbing height is verified by case study.

Key words: post grouting, exponential fluid, climbing height, mudcake

CLC Number: 

  • TU 473
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