PSI - Issue 44

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

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Procedia Structural Integrity 44 (2023) 1832–1839

XIX ANIDIS Conference, Seismic Engineering in Italy Loss-Driven Rapid Warning Methodology for Seismic Risk Mitigation of a Target Railway Infrastructure Iolanda Nuzzo a* , Carlos Riascos b,c , Daniele Losanno d , Nicola Caterino e,b XIX ANIDIS Conference, Seismic Engineering in Italy Loss-Driven Rapid arning Methodology for Seismic Risk Mitigation of a Target Railway Infrastructure Iolanda Nuzzo a* , Carlos Riascos b,c , Daniele Losanno d , Nicola Caterino e,b XIX ANIDIS Conference, Seismic Engineering in Ital Loss-Driven Rapid arning Methodology for Seismic Risk Mitigation of a Target Railway Infrastructure Iolanda Nuzzo , Carlos Rias os , Daniele

a Corpo Nazionale dei Vigili del fuoco, Roma, Italy b Construction Technologies Institute, Consiglio Nazionale delle Richerche, Napoli, Italy c School of Civil Engineering and Geomatics, Universidad del Valle, Cali, Colombia d Department of Structures for Engineering and Architecture, Università degli Studi di Napoli Federico II, Napoli, Italy e Department of Engineering, Università degli Studi di Napoli Parthenope, Napoli, Italy a Corpo Nazionale dei Vigili del fuoco, Roma, Italy b Construction Technologies Institute, Consiglio Nazionale delle Richerche, Napoli, Italy c School of Civil Engineering and Geomatics, Universidad del Valle, Cali, Colombia d Department of Structures for Engineering and Architecture, Università degli Studi di Napoli Federico II, Napoli, Italy e Department of Engineering, Università degli Studi di Napoli Parthenope, Napoli, Italy

© 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 Due to historical, geographical and economic conditions, the population of the Italian peninsula live in zones of intermediate and high seismic hazard. Nevertheless, Italy has a railway network that is deployed throughout its national territory as customary in developed countries. This network plays a fundamental role in the Italian economy and contributes to the resilience of the big cities to seismic events. In this direction, an active strategy for seismic risk mitigation is achieved with the use of information systems, which alert the occurrence of a seismic event and, in some cases, estimate the state of damage, at local or territorial scale, and the economic loss (e.g. early earthquake warning, rapid response system, aftershock warning system). However, the seismic hazard scenario of the Italian country, with most of active faults along its central area of the peninsula, makes it difficult to implement a comprehensive seismic early warning system. In response to this situation, this study proposes a Railway Rapid Warning System (RRWS) for a railway viaduct of the Campania region of Italy. The case study viaduct is approximately 1 km long connecting Quarto Centro and Quarto stations of the Circumflegrea line. The decisional phase of the protocol is based on an economic loss minimization criterion in order to prevent both missing and false alarm states as a main requirement to the new generation of information systems. The minimization consists of a multi-cost analysis combining structural, environmental, urban context and other aspects associated with risk mitigation actions. From the point of view of structural vulnerability, the protocol uses dynamic analysis and kinematic analysis based on the viaduct elements. It is important to mention that the end user of the warning protocol is the institution in charge of the management of the viaduct, who receives the alarm from a web page, e-mail and SMS. Additionally, the alarm describes the intensity measure of the earthquake and, above all, immediately recommends a set of seismic risk mitigation actions specifically targeted on actual conditions of the reference structure. 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: Earthquake risk, structural health monitoring, decisional framework, railway bridge, alarm; Abstract Due to historical, geographical and economic conditions, the population of the Italian peninsula live in zones of intermediate and high seismic hazard. Nevertheless, Italy has a railway network that is deployed throughout its national territory as customary in developed countries. This network plays a fundamental role in the Italian economy and contributes to the resilience of the big cities to seismic events. In this direction, an active strategy for seismic risk mitigation is achieved with the use of information systems, which alert the occurrence of a seismic event and, in some cases, estimate the state of damage, at local or territorial scale, and the economic loss (e.g. early earthquake warning, rapid response system, aftershock warning syste ). However, the seis ic hazard scenario of the Italian country, with most of active faults along its central area of the peninsula, makes it difficult to implement a comprehensive seismic early warning system. In response to this situation, this study proposes a Railway Rapid Warning System (RRWS) for a railway viaduct of the Campania region of Italy. The case study viaduct is approximately 1 km long connecting Quarto Centro and Quarto stations of the Circumflegrea line. The decisional phase of the protocol is based on an economic loss mini ization criterion in order to prevent both missing and false alarm states as a main requirement to the new generation of information systems. The minimization consists of a multi-cost analysis combining structural, environmental, urban context and other aspects associated with risk mitigation actions. From the point of view of structural vulnerability, the protocol uses dynamic analysis and kinematic analysis based on the viaduct elements. It is important to mention that the end user of the warning protocol is the institution in charge of the management of the viaduct, who receives the alar from a web page, e-mail and SMS. Additionally, the alarm describes the intensity measure of the earthquake and, above all, immediately recommends a set of seismic risk mitigation actions specifically targeted on actual conditions of the reference structure. © 2022 The Authors. Published by ELSEVIER B.V. This is an ope acc s article under e CC BY-NC-ND lic nse ( https://cr ativec mmons.org/licenses/by- c- d/4.0 ) Peer-review under responsibility of the scientific co mittee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: Earthquake risk, structural health monitoring, decisional framework, railway bridge, alarm; de t te e h s ( a i h A r

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 th CC BY-NC-ND license (https://creativecommons.org/licens s/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.2023.01.234