Modelling of responses and rutting profile of a flexible pavement structure in a heavy vehicle simulator test

A flexible test road structure was tested in a heavy vehicle simulator test to monitor its performance behaviour. Water was added to the structure half-way through the test. The raised water level had a significant effect, decreasing the resilient modulus and increasing the rate of accumulation of p...

Full description

Saved in:
Bibliographic Details
Published in:Road materials and pavement design 2015-01, Vol.16 (1), p.1-18
Main Authors: Saevarsdottir, Thorbjorg, Erlingsson, Sigurdur
Format: Article
Language:English
Subjects:
32 Road: Pavement design
Asphalt pavements
finite element analysis
Flexible pavement
Groundwater
heavy vehicle simulator
Impact study
Load
Loading
Mathematical model
Methods
Modulus of elasticity
Moisture content
multi-layer elastic theory
numerical analysis
Roads & highways
rutting
Rutting (wheel)
Simulation
Strain gauges
unbound granular materials
Water
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A flexible test road structure was tested in a heavy vehicle simulator test to monitor its performance behaviour. Water was added to the structure half-way through the test. The raised water level had a significant effect, decreasing the resilient modulus and increasing the rate of accumulation of permanent deformation. Numerical analyses to simulate the pavement responses have been carried out using both a two-dimensional multi-layer elastic method as well as three-dimensional finite element analysis, with material properties based on field and laboratory testing. Little difference was found between the two methods and both methods generally agreed well with the measurements. The observed accumulation of permanent deformation manifested on the surface as rutting was modelled using two simple work hardening material models; a stress-based model and a strain-based model. The stress-based model was found to be sensitive to slight response changes and had a closer fit than the strain-dependent model.
ISSN:1468-0629
2164-7402
2164-7402
DOI:10.1080/14680629.2014.939698