Mechanics Analysis And Design Of Combination Of Asphalt Pavement Structure Under Heavy Traffic

With the development of national economy and road transportation, more and more overlord vehicles are operating on road. Overload traffic causes the distresses such as fatigue cracking, rutting, slippage etc, accordingly shorten the service life of asphalt pavement and worsens its performance lever.Based on the current status of the heavy traffic, the common diseases of asphalt pavement is surveyed under heavy traffic. finite element analysis software ANSYS as a tool for the use of 3D finite element displacement method, the road asphalt pavement deflection and structural stress of heavy vehicles was analyzed Quantitative. Demonstrate the asphalt pavement structure destructive under Heavy vehicles. Through the change of rode structural material parameters, calculated pavement structure grassroots bottom stress and deflection value, analysis the sensitivity parameters which impact the pavement structure. Based on the common disease and the characteristics of stress of Heavy traffic, analysis of the pavement structure design portfolio on the basis of the principles, with its own characteristics of Heavy road traffic, this paper raised the basic structure of asphalt pavement which is Suitable for the heavy traffic.