›› 2008, Vol. 29 ›› Issue (5): 1147-1151.

• Fundamental Theroy and Experimental Research •     Next Articles

Comparison and verification of constitutive models for rockfill materials under complex stress path

ZHANG Zong-liang1, JIA Yan-an2, ZHANG Bing-yin2   

  1. 1. Kunming Hydroelectric Investigation, Design and Research Institute, CHECC, Kunming 650051, China; 2. State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 100084, China
  • Received:2006-07-13 Online:2008-05-10 Published:2013-07-24

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Abstract: The present studies on stress-strain characteristics of rockfill materials are mainly performed with the conventional triaxial test; and the verification of constitutive model under complex stress path is unsufficient. Using the large scale triaxial test results of Nuozhadu Rockfill materials under complex stress path, the commonly used constitutive models such as Duncan-Chang’s EB model, nonlinear uncoupled Tsinghua KG model and Shen’s double yielding surfaces model are compared and verified. The results show that the Duncan-Chang’s EB model often overestimates the volumetric compression and give incorrect loading-unloading criterion under some complex stress paths. The other two models are more applicable for rockfill materials under complex stress path.

Key words: constitutive model, complex stress path, large-scale triaxial test, rockfill material

CLC Number: 

  • TU 441.+4
  • 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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