PSI - Issue 62

Ettore De La Grennelais et al. / Procedia Structural Integrity 62 (2024) 48–56 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 4. Example of typical test plan.

6. Geometric survey and crack mapping Geometric surveying emerges as a crucial aspect in assessing the structural conditions of bridges, and in this context, BOLINA Engineering has played a key role. The use of drone-based photogrammetry has represented an advanced strategy for acquiring detailed and accurate geometric data. Through this technology, three-dimensional point clouds have been generated, allowing for the creation of precise 3D structural models of the bridge structures (see Fig.5 for an example of survey result). This approach has not only provided a detailed visual representation of the structures but will also be used in the future in the safety management of the network to identify geometric variations and structural deformations that may not be immediately visible. The precision achieved through photogrammetry contributes to a comprehensive assessment of the geometric conditions of the bridges, enabling BOLINA or any future entity to adopt targeted preventive and corrective measures. The geometric survey conducted in the manner presented and with the level of