Etienne Flavigny

Treatment of the High Number of Cycles as a Pseudo-Cyclic Creep by Analogy with the Soft Soil Creep Model

The accumulation of irreversible deformations of the soil of foundation, under cyclic loading, becomes important if the number of cycles is very high. Hence appears the importance of predicting cyclical deformations after many cycles. This paper presents a simple explicit model for modeling the cyclical behavior of sands in drained condition. This approach consists in proposing of a formulation to estimate the accumulated irreversible strain, based on an analogy between Soft Soil Creep Model and the pseudo cyclic creep, in such a way to define an equivalence between cyclical parameters and parameters of the used model. The last section is devoted to the parametric study of the proposed formulation. We are essentially interested in the influence of the cyclic parameters on the evolution of the accumulated irreversible strain.