Inspeção e avaliação de pontes de concreto armado do município de Pato Branco - Paraná

Abstract

Bridges are fundamental for human beings once they allow the transportation of goods and people over water courses and other natural obstacles. Therefore it is necessary that they are in safe conditions for passersby and that they have the maximum possible life span so that public money is not wasted. Thus, this work aims to verify the current conditions of maintenance and stability of reinforced concrete bridges in the municipality of Pato Branco - Paraná, comparing with the results obtained in the work of Milani (2010), and presenting the current situation of such bridges. For this purpose, visual inspections were performed on 30 concrete bridges of the municipality, using the methods of analysis of ABNT NBR 9452:2016 and DNIT 010/2004 PRO standards. Of the studied bridges 20% presented pedestrian walkway, 20% bodyguard, 73.33% drainage system, 86.67% wheelguard, 20% shoulder and 30% vertical signaling. The number of pathologies found in this study did not increase significantly compared to the pathologies found in 2010 by Milani (2010). In addition, it was found that 80% of the bridges studied showed failure or inefficiency of the guard-wheels, 53% showed a difference in level between the viaduct and the access embankment and 13.33% showed a reduction in the section of supports by cavitation. With the current study it was possible to notice that there were no structural maintenances in the bridges in the period of 10 years between studies, a factor that reduces the durability of the constructions. It is also concluded that the projects must be carried out following the current norms and considering the safety of the users.