›› 2005, Vol. 26 ›› Issue (S1): 209-212.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A planar simplified method for three-dimension cement-soil mixing piles composite foundation with FEM numerical analysis

DENG Yong-feng1, HONG Zhun-shun1, LIU Song-yu1, HU Yin-bao2, ZHOU Yun-jun2   

  1. 1. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China; 2. Lianyungang Headquarters of Expressway Construction, Lianyungang 222200, China
  • Received:2005-01-16 Published:2005-12-15

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Abstract: The cement-soil mixing piles are widely used in expressway engineerings, so it is urgent that the behavior of cement-soil mixing piles composite foundation is deeply comprehended. And the FEM numerical analysis is an important method. The three-dimension FEM easily leads to the big scale matrix, long calculation time and bad convergence; so the planar simplified method is necessary. During simplification, the transformation of parameters is the key problem. The paper brings forward a parameter transformation method by characteristics of the composite foundation and theoretical analysis. Finally, the method is validated by the observed data of Lian-Yan Expressway.

Key words: cement-soil mixing piles, composite foundation, three-dimensional problem, simplified method, numerical analysis

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