Researchand verification of a generalization method for the generalized plastic model by true triaxial test
The generalized plastic constitutive model based on p and q components in two-dimensional space cannot reflect the influence of medium principal stress on the deformation characteristics of soil and stone,so it needs to be three-dimensional to re-flect the constitutive relationship under general stress state.In this paper,several three-dimensional methods are studied.Com-pared with the true triaxial test,the three-dimensional method based on GNST can make the constitutive model better reflect the stress-strain relationship of soil and stone under the general stress path.The numerical calculation of a concrete face rockfill dam and the comparison with the monitoring results show that the three-dimensional constitutive model can better understand the de-formation law of the reactor rockfill dam.Therefore,the 3D modeling method based on GNST can be applied to the design of high earth-rock fill dams,and better prediction results can be obtained.
generalized plasticity modelthree-dimensionaltrue triaxial testhigh earth-rock dam
NETL
NSTL
万方数据
维普
