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논문 기본 정보

자료유형
학술저널
저자정보
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)
저널정보
한국도로학회 한국도로학회논문집 한국도로학회논문집 제8권 제2호
발행연도
2006.1
수록면
37 - 47 (11page)

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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 $ABAQUS^{TM}$ was used to generate pavement responses as analysis results for simple cases with similar linear elastic material input properties. More sophisticated cases were then analyzed using the mechanistic model considering the nonlinear and anisotropic modulus property inputs in the base/subbase granular layers. This paper will describe the details of the developed mechanistic model and the effectiveness of geogrid reinforcement when used in different quality unbound aggregate base/subbase layers.

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