抄録
In this paper, a strain space based plasticity model, which was previously proposed by the authors to represent the compressive softening behavior as well as hardening behavior of concrete materials, has been applied to assess the capability to predict the path-dependent behavior of concrete under the conditions such as (1) monotonically increasing confining pressures, (2) suddenly increasing confining pressures, and (3) suddenly reducing confining pressures. Firstly, a proposed model has been briefly reviewed, and a detail modeling that can treat a path-dependent behavior of concrete has been explained by introducing a damage concept of concrete material. Secondly, the general incremental stress-strain relation has been given in a tensorial form. Finally, the model predictions have been compared with the experimental data available from triaxial compression tests under three types of confining pressure loadings. It has been concluded that the proposed model can well predict the general path-dependent behavior of concrete materials particularly in the softening region.
