Modelling of multilayer viscoelastic road structures under moving loads
Modelling of multilayer viscoelastic road structures under moving loads
DUHAMEL ; NGUYEN ; CHABOT ; TAMAGNY
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
DUHAMEL ; NGUYEN ; CHABOT ; TAMAGNY
Résumé / Abstract
This paper presents a model of a semi-infinite multilayer structure used for road design. It takes into account the thermo-viscoelastic Huet-Sayegh constitutive relation for asphalt materials and it can show the influence of the temperature or the velocity of the load on the displacements and stresses in the structure, unlike elastic models. The proposed method consists in using a double Fourier transform to solve analytically the problem along the depth in the space of horizontal wavenumbers. The solution in the moving load reference system is got by a double inverse Fourier transform. Then, one can calculate the displacements and the stresses in different positions on the road. The main interest in our method is the very short computational time for multilayer structure. The results compare well to analytical and finite element solutions.
Editeur
Civil Comp Press
