Now,because of many aspects reasons,the service life of road pavement in our country is relatively short,far less than the designed year,which causes great economic losses,so extending road use life,reduce the damage of structure layer and follow-up maintenance frequency are very necessary.Generally speaking,the most serious damage is the destruction of the layer structure,so the first consideration is the structure layer when design road.In the design of long-term pavement structure,this paper through the qualitative analysis and the theory st...
