Affiliation:
1. Department of Civil Engineering, Hong kong University of Science and Technology
Abstract
A comprehensive bounding surface sand model has been formulated within a critical-state framework. This model differs from some existing models in that it incorporates the concept of state-dependent dilatancy in its formulation. The concept of state-dependent dilatancy states that the dilatancy of a granular soil depends not only on the stress ratio η = q/p, where q and p are the deviatoric and mean effective normal stresses respectively, but also on the current material internal state in reference to the critical state in e–p–η space, where e is the void ratio. By adopting such a state-dependent dilatancy, the present model simulates, with a single set of model constants, both the contractive and the dilative responses of granular soils over a wide range of variations in stress and material internal states. The model is formulated in general three-dimensional stress-strain space, and works for both monotonic and cyclic loading paths, and under either drained or undrained conditions. The formulations and the underlying concepts are presented in this paper.
Subject
Earth and Planetary Sciences (miscellaneous),Geotechnical Engineering and Engineering Geology
Cited by
158 articles.
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