Inspection as a basis for structural health monitoring

To effectively monitor engineering structures such as bridges, tunnels, and retaining walls, comprehensive knowledge of load-bearing behavior and load transmission mechanisms is essential. This knowledge allows for the assessment of its behavior and the identification of damage mechanisms. A thorough and clear documentation of regular inspection forms the foundation for this. It is important not only to capture damage patterns and visible defects but also to determine their origin and precise location. This information aids in the development of monitoring processes, the selection of measurement variables, and the implementation of monitoring technologies. The paper addresses the progress on how a documentation process of inspections is carried out to serve as a basis for a valid monitoring of such structures. Therefore, the use of digital models and a standardized description of damage in combination with a precise localization on the structure is described in the beginning. Such documentation provides valuable insights into load-bearing behavior and possible underlying damage mechanisms. Additionally, the development of suitable monitoring systems that serve as key parameters for structural inspection is demonstrated. The interaction and exchange of information between inspection and monitoring are emphasized, including clear visualizations and meaningful data overlays, to offer valuable benefits for building owners and inspection personnel.