Mit-E3: Constitutive model for clays formulation, capacities and limitations
DOI:
https://doi.org/10.14195/2184-8394_103_4Abstract
This paper presents the constitutive MIT-E3 model, which is one of the most elaborated models for the simulation of the mechanical behaviour of normally consolidated and moderately overconsolidated clays. The main characteristics of the mathematical formulation of the model are presented, subdivided in terms of normally consolidated and overconsolidated behaviour.
Model predictive capabilities and limitations are illustrated by comparison with laboratory tests data presented in the bibliography: unloading in Ko conditions, CRS test, triaxial undrained tests and simple shear undrained tests.
Finally, the model is applied for the simulation of the behaviour of a trial embankment built over a deposit of "Boston Blue Clay". The numerical results are compared with de field data and with the numeric analyses made with the Modified Cam Clay model (MCC).
Both numeric analyses (MCC and MIT-E3) are compared in terms of yield area, of the lines of equal contours of the increments of vertical and horizontal effective stresses, of the lines of equal contours of increments of pore pressures and the principal stresses directions.
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References
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