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.