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Content available Mechanical performance of asphalt pavement with orthotropic unbound granular sub-base under vehicle load
Gao Yuanyuan, Hlupo Nkosilathi Lovewell, Qian Quan, Jiang Hongtao
Journal of Theoretical and Applied Mechanics
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2023
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Vol. 61 nr 4
715--728
EN
The nonlinear mechanical response and orthotropy are the main properties of an unbound granular material as a sub-base in an asphalt pavement. To investigate the impact of stress and orthotropy characteristics simultaneously in an unbound granular sub-base, a constitutive relation and a finite model were proposed. The distribution of the sub-base resilience modulus and dynamic response of the pavement under vehicle loads were calculated. The results show an increase in the resilience modulus with a decrease in the orthotropic coefficient. Stress and orthotropy affect the stress distribution near the pavement layer, and vehicle velocity significantly impacts the vertical displacement.
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