›› 2009, Vol. 30 ›› Issue (12): 3831-3836.

• Geotechnical Engineering • Previous Articles     Next Articles

Field test analysis of dynamic consolidation and replacement sand pile on marine soft soil

XU Dong-sheng, WANG Ren, MENG Qing-shan, HU Ming-jian   

  1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2009-03-18 Online:2009-12-10 Published:2010-01-18

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Abstract:

A field test area was selected for a marine soft soil treatment. Some factors such as settlement around tamping pit, settlement of sand pile, accumulation and dissipation of excess pore water pressure, and horizontal displacement of deep soil, are monitored during dynamic consolidation and replacement sand pile. Through analyzing the results, some useful conclusions are drawn as follows. First, eight times dynamic consolidation is reasonable for a replacement sand pile. Second, the excess pore water pressure will be effectively decreased after a short standing time; also most excess pore water pressure will dissipate completely after seven days of dynamic consolidation. Third, horizontal displacement of deep soil is taken place at 3?6.5 m depth.

Key words: marine soft soil, dynamic consolidation and replacement, sand pile, in-suit testing

CLC Number: 

  • TU 472.3+1
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