Study of the Stability and Modeling by Finite Elements Using Plaxis 7.2? and Geoslope? of the Ramps A and J of the Toll Motorway at the site of “Patte d’oie” (Dakar-Senegal)

摘要

This article focuses on the study of stability of embankments by finite element method of the straps A and J of the toll road of Dakar-Diamniadio on the section Malick SY-“Patte d’oie”. At the ramp A, deformations have amplitude of 301.93mm. Along AA’, the horizontal deformations are 222.5mm. This leads us to say that the deformations at this ramp are very important especially as allowable deformations in these kinds of structures are very small. Such deformations are larger in the horizontal direction of the embankment. The study shows that at the junction J, deformations are smaller and reach 91.99mm. The horizontal deflections according to section AA’ also show significant deformation equal to 87.63mm. This leads us to say like the above that these deformations are very important especially as these types of structures must withstand long so there have no impact at the road. The study of the stability on Géoslope of the straps A and J of the toll highway has allowed us to demonstrate and reinforce the idea that the slip lines are circular.