Analysis Of Heavy-loaded Long-life Asphalt Pavement

In recent years, there has been a concern terms-heavy traffic that is a phenomenon that after the open of the road (traffic / axial degree) has exceeded to the general level, the attenuation of the road excessive development. In our country, we call it heavy traffic. It has two meanings: over restrict and over loading traffic. Overloading of vehicles is the characteristic of the heavy traffic in our country, which means the gross rail load on axle has been exceeded the limits specified by the Road. Such roads can only be used for 8～10 years while they are designed for 20～30 years. In order to improve the economic of the heavy traffic, we raise the concept of long-life pavement. In this paper, first through the introduction of rectangle load distributing form, in this near face load, the use of finite element analysis of semi rigid pavement on the roads in different overloading of the mechanical response, through the conversion of the number of axle load we learn the impact of heavy traffic on a road structure. Then under the foreign long-life pavement three different primary form of long-life pavement at different loads by the needs of the different mode of asphalt Thickness are calculated. We get the conclusion that defferent mid-road's thickness influences the asphalt pavement through the way of changing the thickness of mid-road.Through the helminthes examination, according to the numerical Analysis, we get the detail parameters of the four-asphalt-mixed viscous elasticity. Through the mixed asphalt's temperature-time effect, we get four materials' viscous elasticity in different temperature.According to the parameters have gotten, we analyzed viscous elasticity of the mixed long-life asphalt pavement and get the result the viscous elasticity reaction of the mixed long-life asphalt road under different materials and different temperature.