Avaliação dos Efeitos de Obstáculos e Qualidade do Pavimentona Vibração Ambiental

Quality urban mobility is necessary for local and regional development. The traffic of light and heavy vehicles has the potential to generate nuisance and structural damage to buildings due to the vibration generated and is present throughout the urban environment. The main causes of vibration are the conditions of the pavement surface, the presence of obstacles, speed and weight of vehicles. Buildings that have shallow foundations and are not reinforced concrete are the most impacted by vibration. The objective of this research is to evaluate the influence of obstacles and road surface quality in the generation of environmental vibration. Peak particle velocity (PPV) measurements were performed in seven different situations: smooth surface, rough, potholed, with speed-reducing studs, ditches and speed bump. The results indicate that in the smooth and rough pavement the PPV meets the normalized criterion of structural damage, but in the other conditions it does not, with the exception of speed bump due to the reduction of vehicle speed. In the most critical situations, such as speedreducing studs, there is the potential of more than 144 occurrences above the criterion  daily. In all the conditions evaluated, the discomfort criterion is exceeded. The rough pavement is the first to form the R-type waves, which are the most harmful to buildings with shallow foundations with the potential for coupling to the first modes of vibration of buildings, an effect that can be potentiated due to the weather. In this way, the poor quality of the pavement and the excess of obstacles potentiate the annoyance generated by vehicle traffic as well as can cause damage to buildings.