%0 Journal Article
%T Numerical Modeling of the Behaviour of a Road Structure on Compressible Soil: Case of the Road Section at the Beau-Rivage-Djassin Intersection
%A Y¨¦malin Daniel Agossou
%A Judicael Agbelele
%A Peace Hounkpe
%A Daniel Djossou
%A Wilfried Hode
%A Edmond Adjovi
%J Open Journal of Civil Engineering
%P 326-341
%@ 2164-3172
%D 2023
%I Scientific Research Publishing
%R 10.4236/ojce.2023.132025
%X This document presents a study of the behaviour of a pavement structure
on compressible soil and the evaluation of its durability. The objective of
this study is to highlight the impact of taking into account the non-linear
elastic behaviour of soils and granular materials in the design process. To
this end, a numerical modelling of the pavement of the beau-rivage-Djassin
crossroads section in Porto-Novo was carried out, based on a compressible soil
whose behaviour will be considered elastoplastic. The subgrade soil on the
section is <span style=\"font-family:Verdana;\">made up of several sub-layers.
The layer of soft, highly plastic clay was</span><span style=\"font-family:Verdana;\"> modelled according to a
modified Cam Clay behaviour, a model of swelling clay soils. The fine sand
layer and the granular layers of the structure are modelled according to
Mohr-Coulomb behaviour. The loading is considered to be uniformly distributed
according to the assumptions of the Burmister model in the French standard. A
first verification with ALIZE allowed to validate the structure on the basis of
the rutting deformation at the head of the platform</span><span style=\"font-family:;\" \"=\"\"> </span><i><span style=\"font-family:Verdana;\">¦Å</span></i><i><sub><span style=\"font-family:Verdana;\">z</span></sub></i><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">= 359.6</span><span style=\"font-family:Verdana;\">*</span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">10</span><sup><span style=\"font-family:Verdana;\">-6</span></sup><span style=\"font-family:Verdana;\"> which remains lower than the admissible deformation</span></span><span style=\"font-family:;\" \"=\"\"> </span><i><span style=\"font-family:Verdana;\">¦Å</span></i><i><sub><span style=\"font-family:Verdana;\">z</span></sub></i><i><sub><span style=\"font-family:Verdana;\">,adm</span></sub></i><span style=\"font-family:Verdana;\"> = 360</span><span style=\"font-family:Verdana;\">*</span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">10</span><sup><span style=\"font-family:Verdana;\">-6</span></sup><span style=\"font-family:Verdana;\">. The numerical calculation was
carried out using the finite element method, the code of which is implemented
under the PLAXIS v21 software. A c</span><span style=\"font-family:Verdana;\">omparative
study with the results of the ALIZE design revealed that th</span><span style=\"font-family:Verdana;\">e numerically
calculated strains</span></span><span style=\"font-family:;\" \"=\"\">
%K MEF
%K Elastoplastic Behaviour
%K Modified Cam Clay
%K Mohr Coulomb
%K PLAXIS
%K ALIZE
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=125722