PSI - Issue 44

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

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Procedia Structural Integrity 44 (2023) 67–74

© 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. © 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 This paper prese ts a novel analytical fragility m del for unrei f rced masonry (UR ) il i s located in Campania region (Southern Italy), where the built heritage was heavily damaged by the 1980 Irpinia earthquake. After that statistical data were collected from a national database, an automatic procedure for random ge eration of URM buildings representative of the regional building stock was developed to set up the building population at risk. Such a procedure allowed the generation of a significant nu ber of structural models, accounting for different ages of construction, numbers of storeys, masonry types, and floor systems. Structural modelling of URM buildings was based on the equivalent frame approach using nonlinear fibre-based macro-elements. Numerical fragility was evaluated via nonlinear static procedures, a high-performance computing platform and conversion according to the MARS model. Fragility models were then successfully validated against damage observed after the 1980 Irpinia earthquake. © 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 Past earthquakes have caused huge economic losses and considerable deaths, particularly as a consequence of heavy damage to historical masonry buildings. Despite the development of nation-wide vulnerability models for Italy, existing data sets show a significant inter-building variability across different regions, highlighting the chance of developing region-specific vulnerability models for seismic risk assessment. This paper presents a novel analytical fragility model for unreinforced masonry (URM) buildings located in Campania region (Southern Italy), where the built heritage was heavily damaged by the 1980 Irpinia earthquake. After that statistical data were collected from a national database, an automatic procedure for random generation of URM buildings representative of the regional building stock was developed to set up the building population at risk. Such a procedure allowed the generation of a significant number of structural models, accounting for different ages of construction, numbers of storeys, masonry types, and floor systems. Structural modelling of URM buildings was based on the equivalent frame approach using nonlinear fibre-based macro-elements. Numerical fragility was evaluated via nonlinear static procedures, a high-performance computing platform and conversion according to the MARS model. Fragility models were then successfully validated against damage observed after the 1980 Irpinia earthquake. Past earthquakes have caused huge economic losses and considerable deaths, particularly as a consequence of heavy damage to historical masonry buildings. Despite the development of nation-wide vulnerability models for Italy, existing data sets show a significant inter-building variability across different regions, highlighting the chance of developing region-specific vulnerability models for seismic risk assessment. Keywords: Masonry buildings, Damage scenario, Fragility curves, Seismic vulnerability assessment, Irpinia earthquake XIX ANIDIS Conference, Seismic Engineering in Italy Seismic fragility modelling of unreinforced masonry buildings in Campania region Valentina Buonocunto a *, Elia Acconcia a , Fulvio Parisi a a Department of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy XIX ANIDIS Conference, Seismic Engineering in Italy Seismic fragility modelling of unreinforced masonry buildings in Campania region Valentina Buonocunto a *, Elia Acconcia a , Fulvio Parisi a a Department of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy Abstract Abstract

Keywords: Masonry buildings, Damage scenario, Fragility curves, Seismic vulnerability assessment, Irpinia earthquake

* Corresponding author. Tel.: +39-081-7683663 E-mail address: valentina.buonocunto@unina.it * Corresponding author. Tel.: +39-081-7683663 E-mail address: valentina.buonocunto@unina.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.2023.01.010