›› 2008, Vol. 29 ›› Issue (4): 1097-1102.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

In-situ tests on negative skin friction of piles in high-piled wharf In-situ test in Shanghai Yangshan Deep Water Port Engineering

XIAO Jun-hua1, ZHOU Guo-ran2, YUAN Ju-yun1, ZHAO Xi-hong1   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Shanghai Harbour Engineering Design & Research Institute, Shanghai 200032, China
  • Received:2006-04-11 Online:2008-04-10 Published:2013-07-10

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Abstract: The in-situ test on negative skin friction of piles in high-piled wharf is one part of Shanghai Yangshan Deep Water Port Engineering. For piles in link-banked structure of high-piled wharf, rubble-mound may cause negative skin friction on piles. Based on data from in-situ tests on piles (two supporting piles and one free-headed pile), basic laws of pile internal force have been obtained. During rubble-mounting negative skin friction mainly comes from the pile segment which is surrounded by dumped rubble. Meanwhile, rubble-mount as surcharge load induces consolidation of soft sub-soils. Negative skin friction on piles also exists under dumped rubble layer because of the relative displacement between the pile and the sub-soil. The negative friction is also greatly influenced by the load on base slab. The distribution character of negative skin friction and the formula for calculating negative skin friction in layered soils proposed in this paper provide some useful data for pile design; especially, for dumping rubble construction in one side underwater, and for selecting measures to reduce negative skin friction.

Key words: high-piled wharf, negative skin friction, in-situ test, supporting pile, free-headed pile

CLC Number: 

  • TU 413
  • 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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