›› 2013, Vol. 34 ›› Issue (S1): 173-178.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Ground loss parameter and soil deformation in pipe jacking

JING Lu1，YUAN Ju-yun2，YUAN Yong2   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
  • Received:2012-10-25 Online:2013-08-30 Published:2014-06-09

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Abstract: The traditional definition of the ground loss parameter is redefined and incorporated on to analytical solutions to predict the ground deformation in different cases of over-shaped or under-shaped in pipe jacking. The gap parameter g is improved based on Mindlin’s solution, so as to take account of the friction force between pipe and soil. Based on the excavation of soil disturbance around the partition, Loganathan soil deformation formula is amended.The improved gap parameter g is substituted into the amending formula to calculate jacking distances at different soil deformation; and then the surface dynamic change is obtained in top tube of the process of measuring. The case study shows that the results are in good agreement with the observed data.

Key words: ground loss, gap parameter, gound deformation, pipe jacking

CLC Number: 

  • TU 443
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