›› 2003, Vol. 24 ›› Issue (6): 974-978.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Couple analysis and numerical simulation of large deformation of deep foundation pit

LUO Xiao-hui1, 2，BAI Shi-wei1   

  1. 1. Institute of rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. College of Civil Engineering and Mechanics, Huazhong University of Sci. & Tech., Wuhan 430074, China
  • Received:2002-07-17 Online:2003-12-10 Published:2014-08-19

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Abstract: Time-space dependent effect in process of excavating deep foundation pit is in close relationship with the design of support structure and construction sequence and organization but is mostly dependent on engineering behaviors of soil on site. According to Biot’s consolidation theory and large deformation theory, a coupled model and the method of FEM numerical simulation can be derived with classical variation principle, which is based on Updated Lagrangian formulation of large deformation, As for a real example of engineering, the comparison of the computing results between large deformation and small deformation is shown; and time-space dependent effect of excavating deep foundation pit is analyzed. It is the main conclusion that time-space dependent effect in process of excavation is remarkable and the security of pit using small deformation method is lack.

Key words: deep excavation, time-space dependent effect, updated Lagrangian formulation

CLC Number: 

  • TU 473.2
  • 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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