Heavy Traffic Asphalt Pavement Structure Design Theory And Engineering Applications

Truck overloading, namely load of truck surpassing the regulating rated load, is a common existhing question.lt also is a mainly destruction reason and has large influence on the right use of the pavement. So it must be considered in pavement design.This paper, regarding the asphalt pavement in the Zhoukou region as the study object, according to the prevalent norms (specifications for design of highway asphalt pavement), with the beginning of the pavement performance and the transportation investigation, totally and systematically analyzes the traffic parameters and the destroying reason of pavement at the early stage in the point of fatigue property and limit strength, gives the concepts and methods of the growth rate of equivalent axle load action time, seasonal modification factor and overload factor, proposes the method of axle load conversion on the condition of heavy loading.On this basis, it proposes the design method adapting to asphalt pavement construction, explains the steps of thickness computation of construction with the combination of engineering example, finally verifies thedesign method in the paper by test road.Theory and practice both prove that the reasonability of pavement structure style and the reliability of design method in the paper can adapt to the present heavy loading and overloading traffic conditions, have highly theoretical and practical value.