›› 2008, Vol. 29 ›› Issue (8): 2302-2306.

• Fundamental Theroy and Experimental Research • Previous Articles    

2-D Biot consolidation FEM Analysis of subgrade improved by combined drainage and reinforcement cushion

CAI Xiao-guang, LIU Han-long   

  1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China
  • Received:2007-04-10 Online:2008-08-11 Published:2013-08-02

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Abstract: The combined drainage and reinforcement cushion (CDRC) is a newly-developed proprietary technology which aims at coastal areas short of sand, is used for horizontal drainage and reinforcement in soft ground treatment and can replace horizontal dewatering sand cushion. The behavior of subgrade improved by CDRC has been analyzed by 2-D Biot consolidation plane strain finite element method. The result shows that the drainage capacity of CDRC can meet the requirement for drainage. Besides, it also shows that the technique can applied to lower foundation additional normal stress and excess pore water pressure, restrain the lateral deformation of foundation effectively, decrease vertical settlement and differential settlement of soft foundation and improve the foundation stability with remarkable effect compared with the traditional horizontal dewatering sand cushion.

Key words: combined drainage and reinforcement cushion, soft foundation, Biot consolidation, finite elements

CLC Number: 

  • TU 443
  • 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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