Tire-pavement friction modeling considering pavement texture and water film  

作　　者：Lanruo Zhao Hongduo Zhao Juewei Cai 

机构地区：[1]Key Laboratory of Road and Traffic Engineering of the Ministry of Education,TongjiUniversity,4800 Cao’an Road,Shanghai 201804,PR China [2]Shanghai Research Institute of Building Sciences Co.Ltd,Shanghai 200032,PR China

出　　处：《International Journal of Transportation Science and Technology》2024年第2期99-109,共11页交通科学与技术(英文)

基　　金：supported by the Ministry of Transport of China(No.2020-ZD3-025);the Shanghai Science and Technology Commission of China(No.22XD1433300).

摘　　要：The accurate estimation of tire-pavement friction,especially under wet conditions,is critical to ensure pavement safety.For this purpose,this paper develops a modified tirepavement friction model which takes the effect of pavement texture and water film into consideration.The influence of pavement texture is quantified by a newly proposed parameter called texture influence coefficient,which is related to the real contact patch of tirepavement.The water effect is calculated from two parts,namely lubrication effect and hydrodynamic effect.Based on these two steps,a modified average lumped LuGre(ALL)model is developed.The proposed model is calibrated and verified by GripTester data collected under different vehicle velocities and water film thicknesses.The root mean square error between the calculated value of the model and the measured value is 0.023.In addition,the effects of vehicle velocity,slip rate,water film thickness,and pavement type on the friction coefficient are analyzed by numerical calculation.The results show that the friction coefficient reaches the maximum when the slip rate is in the range of[0.15,0.20].The increases in the vehicle speed and water film thickness will lead to the decrease in the friction coefficient.Besides,in thin water film(<1 millimeter)conditions,the deterioration effect of water film thickness on the friction coefficient is more remarkable.The results prove that the modified tire-pavement friction model provides a precise and reliable way to estimate the friction coefficient of pavement,which can assist the pavement management systems in risk warning and safety guarantee.

关 键 词：Pavement engineering LuGre friction model Friction coefficient Pavement texture Water film thickness 

分 类 号：TG1[金属学及工艺—金属学]