STRESS ANALYSIS OF CEMENT CONCRETE PAVEMENTS UNDER TRAFFIC LOADS

Abstract

The paper presents calculations of load-induced normal stresses generated by various vehicle types for subsequent modeling of the abrasion resistance of impregnating compositions in cement concrete pavements. The aim of the study was to evaluate normal stresses arising from vehicular loading, taking into account variations in the tire-pavement contact area due to changes in tire pressure. The study evaluates normal stress levels under vehicular loading, accounting for variations in the tire-pavement contact area associated with changes in tire pressure. Vehicles ranging from bicycles to heavy trucks were classified into categories A1-A5 in ascending order of weight. The results are expressed as ranges, where lower bounds correspond to the lightest vehicles within each category at minimum tire pressure, and upper bounds correspond to the heaviest vehicles at maximum tire pressure. Tire pressure is shown to significantly affect the pavement stress state, increasing normal stresses by 28.6-30.3% (bicycles); 30.9-33.5% (motorcycles); 31.8-32.9% (passenger cars); 31.9-33.2% (light commercial vehicles); 31.9-33.3% (heavy vehicles). The presented calculations are of interest for modeling design scenarios in both experimental studies and numerical simulations. The obtained calculation results will enable more accurate development of design schemes in numerical or large-scale modeling of road scenarios.