APPLICABILITY EVALUATION OF DYNAMIC BACKCULCULATION WITH PEAK DEFLECTION AND LOAD FOR PAVEMENT STRUCTURE

Abstract

 The dynamic backcalculation approach require the time series data of the impact force and the associated deflections. However, the majority of FWD data in the past consists of the peak load and the corresponding deflections. In this study, A dynamic backcalculation approach applicable to the peak data is developed and used in this study.
 The dynamic analysis algorithm is incorporated into the newly developed backcalculation program. Using the simulation data and FWD field data, the validity of this newly backcalculation program was confirmed.