Modeling the Deflection Basin of Flexible Highway Pavements by Gene Expression Programming

In this study, Gene Expression Programming (GEP) is used in modeling the deflection basins measured on the surface of the flexible pavements. Backcalculation of the pavement layer moduli are well-accepted procedures for the evaluation of the structural capacity of pavements. The ultimate aim of the backcalculation process from Nondestructive Testing (NDT) results is to estimate the pavement material properties. Using backcalculation analysis, in situ material properties can be backcalculated from the measured field data through appropriate analysis techniques. In order to backcalculate reliable moduli, deflection basin must be realistically modeled. In this study, GEP was used to model the deflection basin characteristics. Experimental deflection data groups from NDT are used to show the capability of the GEP approach in modeling the deflection bowl. This approach can be easily and realistically performed to solve the problems which do not have a formulation or function about the solution. Key words: Flexible highway pavements, nondestructive testing, gene expression programming, genetic algorithm INTRODUCTION Everybody agrees that, by and large, evolution relies on genetic variation coupled with some kind of selection Nondestructive Testing (NDT) and backcalculating and, in fact, all evolutionary algorithms explore these pavement layer moduli are well-accepted procedures for fundamental processes. In all evolutionary algorithms, an