›› 2007, Vol. 28 ›› Issue (10): 2178-2182.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Space effect of soil-nailing excavation protection

WU Zhi-min, TU Yu-min   

  1. Department of Civil Engineering, Zhejiang University, Hangzhou310027, China
  • Received:2005-10-19 Online:2007-10-10 Published:2013-10-15

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Abstract: A three-dimension elastoplastic model had been developed to study the space effect of the soil-nailing excavation protection. The positive corner effect, negative corner effect and layered excavation were emphatically analyzed. The researches showed that: the negative corner of excavation could reduce the displacement of excavation and the force of soil-nail; and its influence was once more than the depth of the excavation; meanwhile, the displacement of the excavation and the force of soil-nailing were much larger in the positive corner; and its influence is near to 3 times of the depth of the excavation; the space effect of soil-nailing pit could be used plenarily by layered excavation; its influence was near to the depth of the excavation. It was proved that three-dimension numeric analysis of the soil-nail structure was very useable.

Key words: deep excavation, soil- nailing protection, space effect, finite element, elastoplastic analysis

CLC Number: 

  • TU 472.99
  • 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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