Desenvolvimento de uma metodologia de instrumentação e avaliação da integridade de estruturas de concreto armado em operação contínua via técnica da impedância eletromecânica e o auto codificador variacional.

Abstract

The monitoring of civil structures that are in full operation has been gaining more and more space in Brazil and worldwide, due to large structures such as bridges, viaducts, and dams that are reaching the end of their useful lives and need periodic and increasingly frequent maintenance. The advancement in the studies of Structural Integrity Monitoring (SHM) and Artificial Intelligence (AI) has opened a wide range of applications in monitoring structures and making possible increasingly accurate and robust diagnoses, especially in the construction sector. In this context, this paper presents a methodology for instrumentation and evaluation of a reinforced concrete structure that is in continuous operation, using the techniques of ISHM (Structural Integrity Monitoring based on Electromechanical Impedance Technique), ultrasound and AI. For this, the proposed methodology was applied in detail to a reinforced concrete beam that supports a mezzanine at the Laboratório de Mecânica de Estruturas Prof. José Eduardo Tannús Reis (LMEst-UFU). The results showed how important the methodology was to identify and separate situations in which alarms from structure monitoring systems could present FalseNegatives and make correct decisions about the possible measurement limits for a given structure. Thus, the objective was satisfactorily achieved and several suggestions for future work were presented.