Analysis on the Stress Fieid of Asphalt Pavement Structure under Heavy Load Traffic

There are many reasons which causes serious initial failures of asphalt pavement.The mechanical responds of asphalt pavement under heavy traffic in traditional design methods have not been considered sufficiently.So this paper analysed the mechanical responds of the road structure under heavy-load.Using the multilayered elastic system theory,under the style of double rounds uniform load,considering the change of axle load,this paper present the changing rules and influencing factors of mechanical responds of the semi-rigid base course asphalt pavement structure.The results indicated that heavy axle load has remarkable influences to the asphalt pavement stress value.As a result,the influence of heavy traffic should be fully considered and controlled in the design process.