Mechanistic modelling of HVS flexible pavement structure

• 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 stress dependency model is used to account for the nonlinear behaviour of unbound materials. Asphalt and subgrade materials are assumed as linear elastic. The response model is verified using heavy vehicle simulator (HVS) response measurements made under variety of wheel load configurations and at different pavement temperatures. The permanent deformation behaviours of the HVS structure is also modelled using mechanistic empirical approach and by employing permanent deformation prediction models. A time hardening approach has been applied to combine permanent deformation contributions from stress levels of different magnitude. The response model outputs and the predicted permanent deformations are in general in good agreement with the measurements.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering -- Infrastructure Engineering (hsv//eng)

Keyword

Unbound base

Deformation

Rut

Performance

Prediction

Model (not math)

Mathematical model

Flexible pavement

Obundet bärlager

Deformation

Hjulspår

Prestanda

Förutsägelser

Modeller

Matematiska modeller

Flexibla överbyggnader

Road: Pavement design

Road: Pavement design

Publication and Content Type

pop (subject category)

kon (subject category)