Avaliação do grau de risco estrutural de pontes rodoviárias de concreto

Abstract

Bridge inspection is an essential stage for ensuring the safety, durability, and performance of roadway structures. This process makes it possible to identify pathological manifestations, assess the conservation state of structural elements, and plan preventive or corrective actions. In this context, the present study aimed to evaluate the structural risk level of a reinforced concrete highway bridge, with the purpose of improving the diagnostic and maintenance processes of such structures. The adopted methodology is characterized as applied research, using a mixedmethods approach with exploratory and descriptive features. Initially, seventeen technical inspection reports of bridges located in the Western region of Paraná were analyzed, from which the main pathological manifestations were identified. Based on these results, an assessment instrument was adapted using the GDE/UnB Methodology, complemented by ABNT NBR 9452:2023 and DNIT 010/2004–PRO standards. The tool was organized in a spreadsheet format and enabled standardized data recording, anomaly classification, and calculation of the structural deterioration level. Subsequently, an inspection was carried out on the bridge over the São José River, in the municipality of Cascavel (PR). The analysis of the technical reports showed that the most frequent pathological manifestations in the evaluated bridges were pavement cracking, found in 47.07% of the structures, followed by beam cracking and concrete degradation in columns, both present in 41.18% of the bridges. Regarding the inspected bridge, it was classified as having a moderate deterioration level, presenting an acceptable structural condition that requires long-term intervention planning, with emphasis on improving drainage, sealing cracks, and restoring areas with early-stage corrosion.