Abstract
A theoretical study of the behavior of structured soil is presented in this paper. By introducing the influence of soil structure and loading history into the Cam Clay model, a new model is formulated. The concept of the difference of void ratios is modified to combine the structure parameter and the overconsolidation ratio and the evolution law is proposed. The new model is a two yield surface model by introducing the concept of the subloading yield surface. By making comparisons of predictions with experimental results, it is demonstrated that the new model provides satisfactory qualitative modelling of many important features of the behavior of structured soils.
