Modeling of flexible pavement structure behavior - Comparisons with Heavy Vehicle Simulator measurements
2012 (English)In: Advances in Pavement Design Through Full-Scale Accelerated Pavement Testing - Proceedings of the 4th International Conference on Accelerated Pavement Testing, 2012, 493-503 p.Conference paper (Refereed)
A response model to be employed in a mechanistic-empirical pavement performance prediction model based on multilayer elastic theory has been developed.An iterative approach using a method of successive over-relaxation of a stress dependency model is used to account for the nonlinear behavior of unbound materials. Asphalt and subgrade materials are assumed to be linear elastic. The response model was verified against two series of Heavy Vehicle Simulator (HVS) response measurements made under a variety of wheel load configurations and at different pavement temperatures.A comparison with FallingWeight Deflectometer (FWD) data was also carried out. The model was subsequently used to predict permanent deformation from the HVS testing using simplework hardening models.Atime hardening approach has been adopted to combine permanent deformation contributions from stress levels of different magnitude.The response model outputs and the predicted permanent deformations were generally in good agreement with the measurements.
Place, publisher, year, edition, pages
2012. 493-503 p.
Deflectometers, Dependency model, Flexible pavement structure, Heavy vehicle simulators, Iterative approach, Linear elastic, Multi-layer elastic theory, Nonlinear behavior, Pavement performance, Permanent deformations, Response measurement, Response model, Stress levels, Subgrade materials, Successive over relaxation, Unbound materials, Wheel loads
IdentifiersURN: urn:nbn:se:kth:diva-145139ScopusID: 2-s2.0-84866890937ISBN: 978-041562138-0OAI: oai:DiVA.org:kth-145139DiVA: diva2:716724
4th International Conference on Accelerated Pavement Testing, APT 2012; Davis, CA; United States; 19 September 2012 through 21 September 2012
QC 201405122014-05-122014-05-122014-09-19Bibliographically approved