关键词: 道路工程；沥青路面；温度应力；进展

Abstract: As a non-ignorable environmental factor in the service process of asphalt pavement, the temperature has attracted extensive attention at home and abroad. Temperature change can cause different temperature stresses to occur inside the pavement structure. In order to master its main research methods and current situation, it was analyzed from three aspects such theoretical analysis, numerical simulation and experimental research. The application scenarios and limitations of different methods were systematically summarized, providing reference for further improvement of research methods. The research results show that the viscoelasticity, stress history and relaxation effect of materials are successively considered in the theoretical analysis method, and the research tends to be gradually improved. Judycki analysis method considers the rheological and viscoelastic properties of materials, which is more in line with the actual stress characteristics of pavement than Monismith analysis method and Hills & Brien analysis method. However, due to some assumptions in the theoretical analysis, there is a deviation between the thermal stress prediction model and the actual value. So, the follow-up research can start with the material characteristics of asphalt mixture, considering the viscoelastic characteristics, to improve the theoretical model and the application scope and accuracy of the theoretical formula. Secondly, the numerical simulation method can scientifically and efficiently study the influence law of different stress states, parameter values and environmental factors on the service performance of asphalt pavement, but the rationality of the model depends on the selection of material parameters. So, the follow-up research should take the scientific definition and comprehensive acquisition of material parameters as the starting point. Finally, the indoor experiment TSRST has high international recognition and is often used as a measurement standard of whether the analytical method is reasonable or not. And the full-scale pavement test loop is more scientific than the indoor test, which has the convenience of space, technology and time. It is the most effective method to study the actual response of pavement structure. The analysis of full-scale loop data may become a follow-up research hotspot.

Key words: highway engineering; asphalt pavement; thermal stress; progress