Maintenance and rehabilitation of tunnels in Brazil
DOI:
https://doi.org/10.14195/2184-8394_152_2Keywords:
Maintenance, Inspection, Rehabilitation MeasuresAbstract
Tunnels are fundamental in transport infrastructure, services and other sectors and activities of modern societies. Built with different technics in different times and environments, the tunnels pose many challenges associated to long operational periods, such as the structure deterioration, material weathering, and evolution of safety requirements. Ensuring the continuous and efficient use of these assets requires management and maintenance of the structure, as well as technical knowledge of their characteristics and behavior over time. This paper provides an overview of the importance of management and maintenance of old and recent tunnels, offering guidance for inspections, and identification of pathologies, mechanisms of changes in the structure and surroundings, typical intervention techniques for the mitigation of problems. The subject is illustrated with several practical cases of old and recent tunnels. The anomalies that have been identified and treated, ensuring a longer service life and safe operation of the structures.
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