›› 2005, Vol. 26 ›› Issue (12): 1953-1956.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Mechanical characters of composite material soil-nail and numerical analysis

LI Zhi-gang1, JIA Hong2, QIN Si-qing1, MA Ping1, QIAN Hai-tao1   

  1. 1. Institute of Geology and Geophysics ,Chinese Academy of Sciences, Beijing 100029, China; 2. China Railway Construction Group Corporation, Beijing 100040, China
  • Received:2004-06-10 Online:2005-12-10 Published:2014-01-12

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Abstract: Composite material soil-nail, a new kind of bar made of fiberglass and epoxy resin, is used as substitute for general steel soil-nail in foundation pit supporting. It shows a variety of properties: high strength, flexibility of designing, cheapness and environmental protection. Samples with a diameter of 21 mm are made; and tension tests are carried out with these samples. Some important characters are observed from the tension tests. The finite element method is then used to analyze and contrast the deformation and failure of foundation pits supported separately by general steel soil-nail, composite material soil-nail and prestressed composite material soil-nail. Three results are revealed：(1) Difference is obvious among the deformation of pits supported by composite material soil-nail, general steel soil-nail and prestressed composite material soil-nail ; (2) The deformation of pit supported by prestressed composite material soil-nail is near to the deformation of the pit supported by general steel soil-nail when depth of pit is 10 m or less；(3) The settlement have no much difference when the pits are supported separately by composite material soil-nail, general steel soil-nail and prestressed composite material soil-nail.

Key words: composite material soil-nail, prestress, finite element method, foundation pit, deformation

CLC Number: 

  • TU 470
  • 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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