Issue 51

M.G. Masciotta et alii, Frattura ed Integrità Strutturale, 51 (2020) 423-441; DOI: 10.3221/IGF-ESIS.51.31 423 Focussed on Fracture and Damage Detection in Masonry Structures Dynamic characterization of progressively damaged segmental masonry arches with one settled support: experimental and numerical analyses Maria-Giovanna Masciotta Department of Engineering and Geology, University G. d’Annunzio of Chieti-Pescara, Italy Institute of Information Science and Technologies ‘‘A. Faedo”, ISTI–CNR, Pisa, Italy g.masciotta@unich.it, https://orcid.org/0000-0003-2364-3490 Daniele Pellegrini, Maria Girardi, Cristina Padovani Institute of Information Science and Technologies ‘‘A. Faedo”, ISTI–CNR, Pisa, Italy daniele.pellegrini@isti.cnr.it , https://orcid.org/0000-0002-3416-771X maria.girardi@isti.cnr.it, https://orcid.org/0000-0002-7358-5607 cristina.padovani@isti.cnr.it , https://orcid.org/0000-0002-2467-569X Alberto Barontini, Paulo B. Lourenço ISISE, Department of Civil Engineering, University of Minho, Guimarães, Portugal albe.barontini@gmail.com, https://orcid.org/0000-0001-8377-8149 pbl@civil.uminho.pt , http://orcid.org/0000-0001-8459-0199 Daniele Brigante, Giovanni Fabbrocino Structural and Geotechnical Dynamics Laboratory, University of Molise, Campobasso, Italy daniele.brigante@unimol.it, https://orcid.org/0000-0001-5538-2024 giovanni.fabbrocino@unimol.it , https://orcid.org/0000-0002-4918-5398 A BSTRACT . This paper aims to explore the dynamic behavior of a segmental masonry arch subjected to increasing horizontal displacements of one support. To this end, output-only dynamic identification techniques are first used to track the evolution of the dynamic features of the system under progressive damage scenarios and evaluate their sensitivity to settlement- induced cracks. Considerations on the structural response of the segmental arch up to failure are also included. Then, a numerical procedure coupling linear perturbation and modal analysis is applied to simulate the dynamic behavior of the arch over consecutive scenarios, taking into account the influence of the damage on the structure’s dynamic properties in an automatic way. The combination of experimental and numerical analyses allows to fully investigate the dynamics of the cracked masonry arch and to shed light on Citation: Masciotta, M.G., Pellegrini, D., Brigante, D., Barontini, A., Lourenço, P.B., Girardi, M., Padovani, C., Fabbrocino, G. Dynamic characterization of progressively damaged segmental masonry arches with one settled support: experimental and numerical analyses, Frattura ed Integrità Strutturale, 51 (2020) 423-441. Received: 13.06.2019 Accepted: 06.11.2019 Published: 01.01.2020 Copyright: © 2020 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution,