›› 2006, Vol. 27 ›› Issue (S1): 881-884.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study on negative skin friction resistance on piles in collapsible loess area

QI Jing-jing1，XU Ri-qing1，GONG Wei-ming2   

  1. 1.College of Civil Engineering and Architecture，Zhejiang University，Hangzhou 310027，China； 2. College of Civil Engineering, Southeast University, Nanjing 210096 , China
  • Received:2006-06-28 Published:2006-12-15

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Abstract: As it has long been recognized that negative skin friction resistance most possibly exists on piles when the soil around pile move downward relative to the pile, especially in collapsible loess in Northwest China. Once it is disposed improperly, the pile foundation will lose its efficacy. So to determine the distribution law of the negative skin friction is of important practical significance in engineering. Concerning the many factors, which always influence the distribution and numerical value of negative skin friction, the field immersion test under static load is still the most effective method in measuring the negative friction. Combined with the experiment of foundation disposal of a power plant in Shanxi Province, the distribution law of negative friction and the influence of collapsible deformation on the bearing capacity of piles are analyzed; and some beneficial results are obtained through these analysis, that will provide instruction for the engineering application.

Key words: collapsible loess, negative skin friction, immersion test, pile foundation

CLC Number: 

  • TU 475
  • 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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