›› 2004, Vol. 25 ›› Issue (2): 251-254.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Mechanism study on bored cast-in-place piles with post-grouting technology

HUANG Sheng-gen1,3, ZHANG Xiao-wei2, CAO Hui3   

  1. 1. College of Civil Engineering, Southeast University, Nanjing 210096, China; 2. Hennan Provincial Communication Planning Surveying and Design Institute, Zhengzhou 450052, China; 3. China University of Geosciences, Wuhan 430030, China
  • Received:2002-10-22 Online:2004-02-10 Published:2014-07-15

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Abstract: The post-grouting technology could improve the bearing capacity of bored cast-in-place piles; and the reinforcing mechanism of the post-grouting technology differs in different soil strata. In soft soils, the improvement of bearing capacity of long piles is mainly derived from increase in frictional resistance. The testing results of static loads and shaft stress are analyzed; and the relationships between frictional resistance and relative displacement are revised in consideration of deformation caused by soil continuity; and they are fitted by transfer functions. Based on transfer functions, the ultimate values of frictional resistance are calculated so as to reflect the real distribution regulations of frictional resistance along the shaft .

Key words: post-grouting technology, bearing capacity, frictional resistance, transfer function

CLC Number: 

  • TU 473.1
  • 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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