01386590

Component

A non-linear Finite Element Method (FEM) model has been developed to model thin surfaced unbound granular pavements. The FEM model incorporates a non-linear anisotropic material model for the granular material and a non-linear material model for the subgrade. The coefficients for the material models were determined from laboratory repeated load tri-axial tests. A test pavement at the Canterbury Accelerated Pavement Testing Indoor Facility (CAPTIF) was instrumented with an inductive coil soil strain system to measure vertical compressive strains and pressure cells to measure the vertical compressive stresses. The test pavement was subjected to loading by a Falling Weight Deflectometer (FWD) device at four different load levels. The results from this analysis showed the need to use a full non-linear model in order to obtain realistic results when modeling FWD data.

Paper no. 07-1788

01386606

English

14p

2007-1

Transportation Research Board 86th Annual Meeting

Bituminous pavements; Deflectometers; Finite element method; Loads; Mathematical models; Pavement design; Test tracks

Pavement technology

New Zealand

Bituminous pavement; Deflectometer; Finite element method; Load; Modelling; Pavement design; Test track

Highways; Pavements

ATRI

Aug 22 2012 9:31PM

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