UH model considering cohesion effects

抄録

Based on the analysis of isotropic compression behavior of clay affected by cohesion, the parameter considering cohesion is introduced into logarithmic function to describe the isotropic compressibility of normally consolidated cohesive clay. Combining with the coordinate translation method, the UH model considering cohesion effects is established in translational stress space. The proposed model can describe mechanical behavior of overconsolidated cohesive clay, including isotropic compression, shear yielding and critical state. Meanwhile, it has the same form in translational stress space as the UH model in real stress space and can be easily extended. Comparison with existing test results shows that the model can reasonably describe the basic mechanical behavior of cohesive clays.