Research On The Cement Concrete Pavement Anti-sliding Performance And Evaluation Model

With the rapid development of chinese highway, and traffic, speed increasing, the higher performance of pavement is required. The anti-sliding performance of pavement is a important factor of road safety. Researching pavement anti-sliding performance and establishing evaluation methods are of great significance tto pavement maintenance management and road safety.First, the present paper analyzes the friction mechanism between pavement and tire, then, summarizes the main factors, and make a brief analysis of anti-sliding performance of the wet pavement. Base on it, the hydrodynamic pressure exerted on the tire is analysed. The three-dimensional finite-element model which simulating tire-pavement interaction with waterfilm is established by using ABAQUS finite element software. It is assumed that tire is no translation, just rotation and the translation speed is applied to road model. Various factors which impact adhesion coefficient of tire and pavement is analysed. Accordingly, with the existing friction evaluation model, and by applying regression analysis, the friction evaluation model regression which relate to tire load, tire pressure, water film thickness, texture depth, sliding speed and other factors is obtained. Then, the various factors, including macrotexture, microtexture, texture direction and so on, which impact on the pavement anti-sliding performance are researched, through laboratory tests and field trials. Next, the performance of new anti-sliding performance tester is analysed, while researching the correlation between new equipment and British Pendulum Tester. Thus, by using linear regression analysis, the linear equation about friction coefficient and BPT could be obtained, and validate it with correlation texts. Finally, refering to the temperature correction formula, evaluation criteria of BPT and the regression equation about friction coefficient and BPT, the temperature correction formula, evaluation criteria of friction coefficient could be derived.