Acquisition and Analysis of Dynamic Pavement Response Data for Long-life Asphalt Pavement

In order to analyze the performance the long-life asphalt pavement,the method of acquisition and analysis of dynamic pavement response data of perpetual asphalt pavement is put forward.The traffic load parameters are colleted by installing WIM.The dynamic response is acquainted by the asphalt strain gauges which buried in the test road and the change mechanism of the pavement structure′s dynamic mechanics response along with the load,the temperature,the truck speed,the offset and so on are discussed.The characteristics of different pavement structure′s stress and strain response are compared.On the basis of it the prediction model of pavement stress and strain response is constructed.The back-calculation of different pavement structure′s asphalt mixture modulus is compared by using FWD test data;the tendency of asphalt mixture modulus along with the temperature is analyzed.