Inspeção em pontes de concreto armado na cidade de Palmas-TO segundo as metodologias DNIT 010/2004 e GDE/UNB

Abstract

This undergraduate thesis aimed to assess the conservation condition of ten reinforced concrete bridges located along the Brejo Comprido Stream, in the southern region of Palmas, Tocantins. The structures were inspected in both traffic directions, totaling ten distinct crossings with similar geometric and structural characteristics. The adopted methodology consisted of applying two distinct assessment approaches: the GDE/UnB method, which uses quantitative criteria to assign deterioration levels based on objective and systematized parameters; and the DNIT 010/2004-PRO method, of a qualitative nature, based on assigning scores that represent the conservation state of structural elements. The inspections were visual and covered the main components of the bridges: substructure, mesostructure, superstructure, and deck, with photographic documentation and classification of the observed pathological manifestations.The results indicated that most structures exhibited recurring issues such as longitudinal and transverse cracks, efflorescence, concrete spalling, and exposed reinforcement. The scores obtained using the DNIT method indicated predominantly fair conditions. Similarly, the values from the GDE method predominantly showed moderate levels of deterioration. The comparison between the two methods revealed significant discrepancies in their application, particularly in cases where the qualitative visual judgment did not accurately reflect the severity of the quantitatively recorded pathologies.Additionally, the study identified the need for greater consistency in the interpretation of adopted classification criteria and emphasized the importance of complementing visual inspections with specific tests, especially in cases indicating potential structural compromise. A lack of a structured bridge management system in the municipality was also identified, reinforcing the urgency of implementing public policies focused on the periodic monitoring and maintenance of these structures.Finally, the study highlights the potential of combining distinct methodologies as a strategy to enhance the technical diagnosis of bridge structures, providing reliable input for decision-making by public managers. The systematic adoption of technical inspections based on objective and standardized criteria is essential to ensure structural safety, bridge durability, and the efficiency of the urban road network.