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Modeling of Friction Characteristic Between Concrete Pavement Slab and Subbase  

Lim, Jin-Sun (인하대학교 토목공학과)
Son, Suk-Chul (인하대학교 토목공학과)
Liu, Ju-Ho (인하대학교 토목공학과)
Jeong, Jin-Hoon (인하대학교 토목공학과)
Publication Information
International Journal of Highway Engineering / v.12, no.4, 2010 , pp. 211-218 More about this Journal
Abstract
Volume of concrete slab changes by temperature and moisture effects. At that time, tensile stress develops because the slab volume change is restrained by friction resistance between the slab and subbase, and then crack occurs occasionally. Accordingly, researchers have made efforts to figure out the friction characteristics between the slab and subbase by performing push-off tests. Lately, researches to analyze concrete pavement behavior by the friction characteristics have been performed by finite element method. In this study, The friction characteristics between the slab and subbase were investigated based on the friction test results for lean concrete, aggregate, and asphalt subase widely used in Korean concrete pavements. The energy method bilinearizing relation between nonlinear friction resistance and displacement were suggested. The friction test was modeled by 3-D finite element program, ABAQUS, and the model was verified by comparing the analyzed results to the test results. The bilinear model developed by the energy method was validated by comparing analysis results obtained by using the nonlinear and bilinear friction resistance displacement relation as input data. A typical Korean concrete pavement was modeled by ABAQUS and EverFE and analyzed results were compared to evaluate applicability of the bilinear model.
Keywords
concrete pavement; slab; subbase; friction resistance; displacement; bilinear model; FE analysis;
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  • Reference
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