Numerical Method for Calculation of the PCN of Airport Pavement

The pavement classification number (PCN) is an International Civil Aviation Organization (ICAO) standard used in combination with the aircraft classification number (ACN) to indicate the strength of a runway, taxiway or airport ramp. This paper introduces a method to obtain the PCN of airport pavement. First, based on the `inertial point' theory, the response modulus of the subgrade and the elastic modulus of concrete slab are calculated by using data from the field testing on the airport pavement. Then, stress and deflection of the pavement slab are analyzed using Winkler foundation model and finite element method. Finally, the PCN and the strength grade of airport pavement are determined. Results show that, through this procedure, PCN can be obtained efficiently. This study is helpful for the health and safe operation of airport pavement.