AVALIAÇÃO DA INFLUÊNCIA DA SUPERFÍCIE DE RODAGEM NA VIBRAÇÃO GERADA PELO TRÁFEGO RODOVIÁRIO

Abstract

The artificial vibration generated by the urban activities can be evaluated on two distinct aspects: the discomfort and the potential for structural damages. One of the main sources of urban vibration is the road traffic that is part of the daily life. The main inductors of vibratory energy are the conditions of the road surface associated with the speed and weight of the vehicles. The objective of this work is to evaluate the influence of the road surface on the vibration generated by road traffic. PPV (peak particle velocity) measurements were performed in different scenarios with the unpaved surface, with asphalt surface and with stud and speed reducing spines. The results indicate that with asphalt surface the amount of PPVs above the normalized criterion was reduced, but due to high speeds, the criterion of structural damage was reached at least once in each condition. In the scenarios with studs and speed reducing spines the obtained PPVs were smaller, mainly due to the lower speeds. The vibrating waves propagate in the soil by Rayleigh waves with potential of coupling to the first modes of vibration of the buildings, effect that can be potentiated with the effects of the humidity and the age of the building.