›› 2006, Vol. 27 ›› Issue (7): 1171-1175.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches

ZHANG Yi-ping1, YU Ya-nan1, ZHOU Hong-wei2   

  1. 1.College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China; 2.Ningbo City Investment Stock Limited Company, Ningbo 315000, China
  • Received:2004-10-18 Online:2006-07-10 Published:2013-11-19

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Abstract: In order to study the causes of post-construction settlement of deep-jet-mixed(DJM) pile composite foundation at bridge approaches, the settlement is analyzed and back-analyzed by Biot’s consolidation FEM. The soil constitutive model is the Duncan-Chang nonlinear elastic model in finite element analysis; and Duncan-Chang nonlinear elastic model and Merchant viscoelastic model are used in finite element back-analysis. The computation results show that the traffic load and soil creep are the main causes induced the post-construction settlement of DJM pile composite foundation. The traffic load is the main cause at early period, but soil creep is the main cause at post period.

Key words: DJM (deep-jet-mixed) pile, settlement, traffic load, creep

CLC Number: 

  • TU 472.3
  • 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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