Wetting deformation

one of the primary types of deformation in core wall rockfill dams

significantly affects the stress-deformation behavior of the dam structure and its safety during initial impoundment. To perfect the theory of wetting plasticity

it is essential to develop a plastic model for rockfill wetting deformation. A new plastic model for wetting deformation is proposed in this paper based on the modified Cambridge model and a wetting dilatation equation derived from the wetting strain law. Based on the test data

the parameters are determined and the model is verified. The model’s calculation results are in good agreement with the test data

confirming the accuracy and rationality of the modified Cambridge model for rockfill wetting deformation proposed in this paper. Additionally

the variation rules of model parameters under different confining pressures and porosities are analyzed

and calculation methods for each parameter under varying conditions are provided. These findings enhance the plasticity theory of rockfill wetting deformation and provide valuable reference and support for future research in this area.