›› 2009, Vol. 30 ›› Issue (7): 2005-2010.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Soil squeezing effect of DCM pile and its application to subway tunnel

FU Yan-bin1, 2, LIAO Shao-ming1, ZHU He-hua1   

  1. 1. College of Civil Engineering, Shenzhen University, Shenzhen 518060, China; 2. Department of Geotechnical Engineering of Tongji University , Key Laboratory of Geotechnical and Underground Engineering of Education Ministry, Shanghai 200092, China
  • Received:2007-12-04 Online:2009-07-10 Published:2011-03-10

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Abstract:

Soil squeezing effect induced by DCM (deep cement mixing) pile has an impact on tunnel deformation while the cement mixing pile is used to strengthen the ground around tunnel. Four lateral load models are proposed and verified based on numerical simulation and measured data. Soil squeezing effect is simulated by the finite element method using the lateral load model. The ground deformation ,tunnel deformation concerning creep effect are analyzed with respect to different construction sequences. The results show that construction sequences have a great effect on ground deformation and the deformation of the tunnel when DCM pile is constructed，but tunnel deformation concerning creep effect is small.

Key words: deep cement mixing pile, lateral load model, soil squeezing effect, subway tunnel

CLC Number: 

  • TU 473
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