Analysis on influence factors of adhesion characteristic of tire-asphalt pavement based on tire hydroplaning model

In order to study the adhesion performance between tire and asphalt pavement, the finite element model of patterned inflation tire hydroplaning was established based on the coupled Eulerian-Lagrangian(CEL) method. The applicability of the tire hydroplaning model was validated. Tire-pavement adhesion coefficient curves for three types of asphalt pavement of asphalt concrete(AC), stone mastic asphalt(SMA) and open graded friction course(OGFC) were calculated. According to the adhesion characteristic theory, factors affecting the adhesion characteristics of tire-asphalt pavement under the antilock braking system (ABS) state and wet condition were analyzed. The results show that the adhesion between tire and pavement is related to the tire movement state. With the increase of slip rate, the longitudinal adhesion coefficient of a tire increases first and then decreases. When the slip rate is about 15%, the adhesion coefficient reaches the maximum value. The deeper surface macroscopic texture can improve the road skid resistance when the water film thickness is smaller and the inflation pressure is higher. The dry pavement reflects higher adhesion performance than the wet state under the condition of a certain mean profile depth (MPD). With the same water film thickness, the adhesion coefficient decreases with the increase of driving velocity, and OGFC pavement has evidently better skid resistance than AC pavement and SMA pavement. © 2018, Editorial Department of Journal of Southeast University. All right reserved.