PSI - Issue 62

Ettore De La Grennelais et al. / Procedia Structural Integrity 62 (2024) 763–772 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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The lateral walkways were expanded between 1987 and 1988, as indicated in the estimate from the "RBA Ruggero Baldasso Architetto" study, using hot-rolled profiles with welds, suggesting construction subsequent to the original post-war bridge. Subsequent restoration and improvement interventions have been carried out to preserve structural integrity and enhance the aesthetic appearance. In 2002, chromatic restoration work and replacement of expansion joints were performed, while in 2018, additional chromatic restoration interventions and the installation of a new lighting system were carried out. 4. Structural and defect survey, material characterization The information necessary for the development of the structural geometric survey was collected using two methods. The first, a more traditional approach, involved measuring elements with calipers and a tape measure. The second method, on the other hand, utilized a series of images captured with the assistance of a drone and their processing with ReCap software, allowing for the reconstruction of the three-dimensional geometry of the bridge with a point cloud.

Fig. 3. Direct geometric and structural survey with cataloging of defects.