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http://dx.doi.org/10.12652/Ksce.2012.32.3D.223

A Development of Skid Resistance Prediction Model Considering Water Film Thickness and Vehicle Speed  

Jo, Shin Haeng (경기대학교 대학원 토목공학과)
Lee, Soo Hyung (한국건설기술연구원, 경기대학교 대학원 토목공학과)
Yoo, In Kyoon (한국건설기술연구원)
Kim, Nakseok (경기대학교 대학원 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.3D, 2012 , pp. 223-229 More about this Journal
Abstract
Skid resistance is defined as the friction between pavement surfaces and vehicle tires. Lower skid resistances were observed as the vehicle speeds the water film thicknesses were increased according to the analysis results using computer modeling. The lift force is calculated from the analysis results and depends on vehicle speeds and the water film thickness. A modified IFI(international friction index) skid resistance prediction model was developed to reduce the differences between the IFI resistance prediction model and the actual skid resistance. The correlation analysis results between the IFI prediction model and the actual skid resistance revealed that the $R^2$ using the modified IFI prediction model was 0.64 whereas the $R^2$ using the conventional IFI prediction model was 0.49. This presents the modified prediction model is better than the conventional one. An improved precise prediction model is to be obtained if water film thicknesses are considered in the modified prediction model.
Keywords
skid resistance; prediction model; water film thickness; hydroplaning; lift force;
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