Science China Technological Sciences

, Volume 62, Issue 4, pp 649–664 | Cite as

A generalized plasticity model for the stress-strain and creep behavior of rockfill materials

  • ZhongZhi FuEmail author
  • ShengShui Chen
  • KuangMin Wei


The generalized plasticity constitutive equations that simulate, in a unified manner, the stress-strain response and the creep behavior of rockfill materials are derived using the concept of elastoplasticity. A single yield surface is assumed to capture the onset of plastic strains with, however, two separate potential functions for the stress-induced plastic strains and the creep strains, respectively. The involved tensors and scalars are then specified directly, following the generalized plasticity method, to substantiate the constitutive equations. The model thus obtained is verified using triaxial compression experiments, true triaxial experiments and triaxial creep experiments. The effectiveness of the model is also demonstrated by a successful application in studying the behavior of a high concrete face rockfill dam (CFRD). It is found that for a high CFRD with a long construction period, neglecting the creep of rockfill materials during construction results in an underestimation of the deformation of the dam. The deformation and stress of the concrete slabs may also be considerably underestimated.


rockfill materials creep behavior constitutive model generalized plasticity concrete face rockfill dam (CFRD) 


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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Geotechnical Engineering DepartmentNanjing Hydraulic Research InstituteNanjingChina
  2. 2.Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-rock DamNanjingChina

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