In this contribution, a generalized Cam clay model for cohesive soil materials is introduced. A new formulation not only suppresses evolution of excessive failure stresses and dilatancy rate, but also allows for the reduction of поп-realistic softening behavior of overconsolidated soils predicted when adopting the formulation of classical Cam clay model. More realistic response of the soil is achieved by introducing a new yield function in the dilatation (supercritical or dry) domain, i.e. for OCR > 2. Further, the dependency of the yield function on the Lode angle is adopted and non-associated flow rule is assumed. Finally, the reduction of hardening modulus is shown in comparison to the classical Cam clay model formulation. and Obsahuje seznam literatury