›› 2008, Vol. 29 ›› Issue (2): 365-369.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Base stability of braced excavations in soft clays using FEM

CHEN Fu-quan, LÜ Yan-ping, LIU Yu-chuan   

  1. School of Civil Engineering, FuzhouUniversity , Fuzhou 350002, China
  • Received:2006-06-15 Online:2008-02-11 Published:2013-07-10

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Abstract: Finite element method with reduced shear strength (SSRFEM) was used to evaluated the base stability of excavations in soft clays under the undrained condition. The influence of clay undrained shear strength, conditions of pit bracing system and pit dimensions on base upheave stability of excavations were studied detailedly. The results from several limit equilibrium analysis methods for evaluating base stability of excavations were compared with the results from FEM. It shows SSRFEM is a reliable and robust method for assessing the safety factor of the base stability of excavations and limit equilibrium analysis methods only can be used on some conditions.

Key words: excavation, base stability of excavation, finite element analysis, safety factor, stability number, soft clay

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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