International Journal of Highway Engineering (한국도로학회논문집)
- Volume 8 Issue 2 Serial No. 28
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- Pages.37-47
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- 2006
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- 1738-7159(pISSN)
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- 2287-3678(eISSN)
Mechanistic Analysis of Geogrid Base Reinforcement in Flexible Pavements Considering Unbound Aggregate Quality
- Kwon Jay-Hyun (Department of Civil and Environmental Engineering University of Illinois) ;
- Tutumluer Erol (Department of Civil and Environmental Engineering University of Illinois) ;
- Kim Min-Kwan (Department of Civil and Environmental Engineering University of Illinois)
- Published : 2006.06.01
Abstract
The structural response and performance of a flexible pavement can be improved through the use of geogrids as base course reinforcement. Current ongoing research at the University of illinois has focused on the development of a geogrid base reinforcement mechanistic model for the analysis of reinforced pavements. This model is based on the finite element methodology and considers not only the nonlinear stress-dependent pavement foundation but also the isotropic and anisotropic behavior of base/subbase aggregates for predicting pavement critical responses. An axisymmetric finite element model was developed to employ a three-noded axisymmetric membrane element for modeling geogrid reinforcement. The soil/aggregate-geogrid interface was modeled by the three-noded membrane element and the neighboring six-noded no thickness interface elements. To validate the developed mechanistic model, the commercial finite element program
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