Forecasting of the Residual Life of Pavements on Highways Based on the Analysis of Energy Dissipation under the Dynamic Influence of Transport

Abstract—

The aim of the study is to develop a method for predicting the residual life of road surfaces on highways based on the analysis of energy dissipation under the dynamic influence of transport. To solve this problem, the method of analyzing its stress-strain state is applied, based on the exact solution of the dynamic Lame equation, which allows constructing the amplitude-time characteristics of displacements, strains, and stresses. Based on the constructed amplitude-time characteristics of stresses and strains, a dynamic hysteresis loop is constructed, the area of which corresponds to the volume of dissipation energy in the structure of the pavement for a single deformation cycle. Based on the presented computational approach, a method for determining the calculated total energy dissipation in the structure of the pavement over the service life was developed. Using the FWD shock loading unit and a mobile diagnostic laboratory, an experimental method for determining the total energy dissipation over the service life of the pavement was developed. Their comparison allows predicting wear and determining the residual life and service life of road coverings on highways as well as assigning corrective measures for their restoration.