ANALYSIS OF INTERLAYER SLIP EFFECT IN REINFORCED ASPHALT MIXTURE BRIDGE DECK PAVEMENT WITH CONCRETE STRUCTURES

One important reason of common defects for the asphalt mixture bridge deck pavement is its viscoelasticity and interlayer slip. Therefore, the uniaxial compression creep experiments were conducted on AC-13 asphalt mixture at different temperatures, and the experimental data was fitted using the Burgers model. The analysis showed that a significant influence on the creep performance of the asphalt mixture is the temperature. Secondly, based on the principles of elasticity and four basic assumptions, the slip theory of composite beams between asphalt mixture and concrete structures is proposed, and calculation formulas for the sliding displacement under several simple loads are derived. Finally, based on an example of the pavement renovation and the experimental data, a self programming was used for calculation and ANSYS modeling was used for verification. The interlayer slip mechanical properties of asphalt mixtures have been analyzed under the action of self weight. The analysis results indicate that the viscoelasticity and interlayer slip of asphalt mixture have a significant impact on its mechanical properties, and it should be considered in the design of asphalt mixture bridge deck pavement.