The Research Of Temperature And Load Based On Mechanics Of Asphalt Pavement

With Asphalt concrete pavement inherent advantages, is widely used in the world. Otherwise, the properties of asphalt concrete is depended by the mechanical of the temperature and load which are not taken seriously in China asphalt pavement material & structural design but on the method of the anti-rutting and load conversion the conditions of the above as a styling fixed factor in project & theory design can not explain the viscoelastic properties of mixture under the thumb of load & temperature, rutting and environmental factors. Therefore, it is based on the existing home and abroad research results that is focus on the Research of Temperature and Load Based on Mechanics of Asphalt Pavement.The numerical simulation analysis of the temperature field of asphalt pavement and the loads have been extensively studied.Firstly, from the theoretical research on the production of asphalt pavement and method of temperature field were reviewed, and the application of existing research analyzes the current situation. Secondly, based on field survey data, defined the main factors affecting the temperature of the solar radiation and air temperature, and the road load is influenced by the traffic.Then, from the asphalt pavement temperature field and convection thermal conductivity of two ways to start is usually a brief introduction to their boundary conditions, and to lay the foundation for subsequent software simulation.In 0.2Mpa, 0.7Mpa, 1.2Mpa, 1.7Mpa load conditions and -15 ~ 15°C of temperature conditions, the finite element software ABAQUS and pavement analysis software BISAR respectively dynamic, static mechanical analysis, and based on viscoelasticity theory and the DP model, respectively, under different road surface temperature load combination of stress and strain are analyzed, that the instantaneous load and temperature conditions, mainly the road linear stress-strain deformation and the software analysis results with experimental results show that the temperature according to the asphalt layer has a significant lag effect.