Stress Analysis of Asphalt Rubber Stress Absorbing Layer Under the Influence of Temperature

The high-temperature cracking has become one of the major hazards of the asphalt pavement.Rubber asphalt is the good asphalt modifier.It can absorb the stress,improve the high-temperature performance of asphalt pavement、extend the pavement life、delay the reflective cracking,etc.We use the ABAQUS finite element software,select the thermal characteristics of the asphalt pavement parameters in 15℃、20℃ and 60℃.Analysis rubber asphalt stress absorbing layer of semi-rigid base pavement structure and flexible base pavement structure stress-strain law at different temperatures.Recommended the design parameters and the structure combination of asphalt pavement structure layer,provide a theoretical basis for engineering practice.