Study on Rheological Behavior of Undisturbed Soft Clay in Wenzhou Considering Structural Property

Based on boundary surface elastoplastic theory, a boundary surface elastoplastic constitutive model is established which is considered both structural property and rheological behavior of soft clay with the method of taking Cam-Clay yield surface as boundary surface. The structural parameters are introduced to calculate structure-damage strain. Plastic volumetric strain is regarded as a function time t so that a rheological parameter is introduced. The constitutive model is validated by numerical analysis of triaxial rheological tests.