›› 2006, Vol. 27 ›› Issue (5): 849-0852.

• Fundamental Theroy and Experimental Research • Previous Articles    

Effect examination for a base post-grouted overlength drilling pile

DAI Guo-liang, GONG Wei-ming, XUE Guo-ya, TONG Xiao-dong   

  1. College of Civil Engineering, Southeast University, Nanjing 210096, China
  • Received:2004-07-08 Online:2006-05-10 Published:2013-11-05

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Abstract: This paper mainly introduces the test results of an overlength drilling pile with base post grouting technique, including self-balanced loading test and coring test. According to tests, the grouting cement can rise up to 15 m from pile tip under the geological and construction conditions, but requires much time to reach its design strength and distributes non-uniformly around pile tip. The standard penetration tests (SPT) show the number of SPT after grouting is more than that of before grouting. The self-balanced test results indicate that the bearing capacity of the test pile after grouting is 1.5 times of that of before grouting. Compared with non-grouted piles, the base post-grouted piles obviously improve the bearing capacity and load transfer behavior.

Key words: overlength pile, post-grouting pile, bearing capacity, self-balanced test

CLC Number: 

  • TU 473
  • 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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