PSI - Issue 44

ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceD rect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 44 (2023) 2090–2097

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. Abstract The conservation of the built architectural heritage in seismic-prone regions is a topical task in modern civil engineering. The ongoing diffusion of structural health monitoring systems calls for innovative and efficient methodologies for damage identification and condition assessment from field data. For this purpose, the paper proposes a novel model-based and data-informed approach relating the variation of the modal properties of the structure to increasing levels of seismic damage, looking into the outcomes of pushover analysis from a frequency-domain perspective. The direct problem is addressed through nonlinear static analyses, in which the structure is progressively damaged by applying simplified distributions of earthquake-induced horizontal forces, followed by a modal analysis at each degraded damage state. Addressing the inverse problem, starting from experimentally identified variations of the spectral properties and exploiting the simulation results, efficiently provides valuable insights into potential damage levels suffered by the structure. The forward methodology is exemplified by the application to a continuously monitored monumental masonry palace, the Consoli Palace of Gubbio, Italy, which was recently hit by a low-to-medium intensity earthquake and exhibited a slight reduction of its natural frequencies. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: equivalent frame model; finite element model; nonlinear static analyses; damage assessment; modal identification; structural health monitoring. Abstract The conservation of the built architectural heritage in seismic-prone regions is a topical task in modern civil engineering. The ongoing diffus struct ral health monitoring system calls for in ovative and efficient methodologies for damage d nt fication a d condition assessment from field data. For this purpose, the paper proposes a novel model-based and data-informed approach relating the variation of the modal properties of the st ucture to incr asing lev ls of seis ic dam g , looking into the outcomes of pushover analysis from a frequency-domain perspective. The direct prob m is addressed through n nli ear static analyses, in which the structure is progressively damaged by applying simplified distributions of earthq ake-i duc d hor zont forces, followed by a modal analysis at ach degraded damage state. Addr ssing the nverse problem, starting from experimentally identified variations of the pectral prop rties an exploiting the simulation r sults, efficiently provides valuabl insights into potential damage levels suffer d by the st ucture. The f rward methodology is exempli ied by the application to a continuously monitore monum ntal masonry palac , the Consoli Palace of Gubbi , Italy, which was recentl it by a low-to-medium tensit earthquake and exhibited slight reduction of its natur l fr quencies. © 2022 The Authors. Publi hed by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review u der responsibility of h scientific committe of the XIX ANIDIS C nference, Seismic Engineering in Italy Keywords: equivalent frame model; finite element model; nonlinear static analyses; damage assessment; modal identification; structural health monitoring. XIX ANIDIS Conference, Seismic Engineering in Italy Nonlinear static analyses to improve the seismic damage assessment of monitored masonry palaces: application to the Consoli Palace of Gubbio, Italy D. Sivori a *, S. Cattari a , S. Alfano a , L. Ierimonti b , I. Venanzi b , F. Ubertini b a University of Genoa, Dept. of Civil, Chemical and Environmental Engineering (DICCA), Via Montallegro 1, Genoa 16145, Italy b University of Perugia, Dept. of Civil and Environmental Engineering (DICA), Via G. Duranti 93, Perugia 06125, Italy XIX ANIDIS Conference, Seismic Engineering in Italy Nonlinear static analyses to improve the seismic damage assessment of monitored masonry palaces: application to the Consoli Palace of Gubbio, Italy D. Sivori a *, S. Cattari a , S. Alfano a , L. Ierimonti b , I. Venanzi b , F. Ubertini b a University of Genoa, Dept. of Civil, Chemical and Environmental Engineering (DICCA), Via Montallegro 1, Genoa 16145, Italy b University of Perugia, Dept. of ivil and Environmental Engineering (DICA), Via G. Duranti 93, Perugia 06125, Italy

* Corresponding author. E-mail address: daniele.sivori@dicca.unige.it * Corresponding author. E-mail address: daniele.sivori@dicca.unige.it

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. 10.1016/j.prostr.2023.01.267