3D Photogrammetric Reconstruction by Drone Scanning for FE Analysis and Crack Pattern Mapping of the “Bridge of the Towers”, Spoleto

Abstract:

Technological advances in the digital camera industry and computing resources make the use of photogrammetry a very fast, low-cost, contactless and non-destructive technique. It can represent a good alternative to obtain 3D information for monitoring and conservation of cultural heritage assets, especially where it is not possible to use 3D laser scanners and also in situations where areas to be inspected are not easily accessible [1]. Resolution generally depends on the number of images, their quality and the level of overlap between them, as well as hardware and software capabilities. Starting from 2D aerial or terrestrial photographic images, photogrammetry allows to reconstruct a 3D model in the form of a "point cloud" and also to derive accurate 3D measurements of large architectural elements.This paper is about stereo-photogrammetric scanning by drone performed by MENCI software s.r.l. aimed at the definition of the state of conservation of the “Bridge of the Towers” in Spoleto and its long term preservation without building scaffoldings. It was performed within the RoMA (Resilience enhancement of a Metropolitan Area) project, through an agreement between the “Italian National Agency for New Technologies, Energy and Sustainable Economic Development” (ENEA) and the “Italian Ministry of Cultural Heritage and Activities” (MIBACT).Photogrammetric scanning and FE modelling were applied within the project together with many other monitoring techniques in order to assess the bridge cracks pattern and its structural health by a multidisciplinary approach that allows their mutual validation [2].As one of the most important problems in the use of photogrammetric 3D reconstruction is the considerable demand in terms of hardware and software resources for images processing and data storage, thanks to the HPC (High Performance Computing) resources provided by the CRESCO infrastructure (Research Computational Centre on Complex Systems), it was possible to analyse and process a large amount of high-resolution photos in order to detect the crack pattern and to assess the actual damage state to be monitored over time [3].

• Periodical: Key Engineering Materials (Volume 747)
• Pages: 423-430
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.747.423
• Online since: July 2017
• Authors: Marialuisa Mongelli*, Gerardo de Canio, Ivan Roselli, Marialaura Malena, Andrea Nacuzi, Gianmarco de Felice
• Keywords: 3D Reconstruction, Cultural Heritage, Finite Element Analysis (FEA), Photogrammetry, SFM

References

[1] P. Arias, J. Herraez, H. Lorenzo and C. Ordonez, Control of structural problems in cultural heritage monuments using close-range photogrammetry and computer methods, Computers and Structures, 83 (2005), p.1754–176.

DOI: 10.1016/j.compstruc.2005.02.018

[2] G. De Canio, I. Roselli, A. Giocoli, M. Mongelli, A. Tatì, M. Pollino, S. Martini, L. De Cecco, L. La Porta and F. Borfecchia, Seismic monitoring of the Cathedral of Orvieto: Combining Satellite InSAR with In-Situ Techniques. In Proceedings of SHMII-7 (2015).

[3] G. Ponti et al., The role of medium size facilities in the HPC ecosystem: the case of the new CRESCO4 cluster integrated in the ENEAGRID infrastructure. In Proceedings of the International Conference on High Performance Computing and Simulation (HPCS); 2014. paper 6903807.

[4] G. De Canio, M. Mongelli, I. Roselli, A. Tatì, D. Addessi, M. Nocera and D. Liberatore, Numerical and operational modal analyses of the Ponte delle Torri, Spoleto, Italy. In Proceedings of 10th SAHC, Leuven, Belgium.

DOI: 10.1201/9781315616995-101

[5] M. Gioffrè, V. Gusella and F. Cluni, Performance evaluation of monumental bridges: testing and monitoring Ponte delle Torri, in Spoleto. Structure and Infrastructure Engineering (2008).

DOI: 10.1080/15732470601155300

[6] J.C. Araiza Garaygordobil, Dynamic identification and model updating of historical buildings. State-of-the-art review. In Proceedings of 4th International Seminar On Structural Analysis of Historical Constructions, 10-13 November 2004, Padua, Italy, 499.

[7] R. Brincker, A. De Stefano and B. Piombo, Ambient Data to Analyse the Dynamic Behaviour of Bridges: A First Comparison Between Different Techniques. In Proceedings of 14th International Modal Analysis Conference (IMAC), 12-15 February 1996, Dearborn, Michigan, 477-482.