Impact of Environment Temperature and Vehicle Loading on Rutting Development in Asphalt Concrete Pavement

In order to investigate the effect of environment temperature and vehicle loading on the asphalt pavement rutting development,a 3D model of pavement structure was built by utilizing ABAQUS.In combination with observed temperature data,the temperature variation law in pavement was analysed.On this basis,the asphalt pavement rutting developments under different vehicle loadings at different environment temperatures were analyzed.The results indicate that(1) the rutting develops nonlinearly as the environment temperature varies;(2) the rutting developing rate under high temperature condition is much higher than that under low temperature condition;(3) there is a linear correlation between rut depth and vehicle loading under the same loading times;(4) rutting increases more under low temperature condition than under high temperature condition with the same loading increment,however,the absolute increasing value of rut depth is larger at high temperatures.Therefore,the asphalt concrete anti-rutting performance at high-temperatures should be paid more attention in the material design,and the over-loading condition should be in good control so as to avoid the development of rutting disease.By this way,the pavement service life can be extended.