The modified Cam-Clay model is only applicable for isotropically consolidated soft clay; and it cannot describe the anisotropic stress-strain behavior of anisotropically consolidated clay. A new model

which can be adopted for anisotropically consolidated soft clay

was developed here based on the modified Cam-Clay model. An anisotropic tensor and a shape parameter were introduced in the yield surface of the model. Initial value of the anisotropic tensor was determined by the initial consolidation stress state

and its evolution was described by a rotational hardening law both depending on plastic volumetric and deviatoric strain. The shape parameter enhanced the flexibility of the yield surface. Effectiveness of the model was verified by the triaxial experimental data of kaolin clay

boston Blue clay and Otaniemi clay.