Szukana fraza: [Abstract = "In this study we are interested in the exploitation of the cyclic shear tests carried out by Pra\-ai with imposed normal rigidity \(CNS\) in order to demonstrate the phenomenon of falling of the normal stress. The approach presented in this paper consists in proposing a simple expression for estimating the degradation of normal stress as a function of cyclic shear parameters after a large number of cycles. The validation of this approach is verified by the application of this formulation to a real case where the comparison of the simulations made by this approach with those recorded on site shows the good adaptation of this approach to this type of problems."]