PSI - Issue 64

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ScienceDirect Structural Integrity Procedia 00 (2023) 000–000 Structural Integrity Procedia 00 (2023) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

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

Procedia Structural Integrity 64 (2024) 1025–1032

SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Dissipative exoskeletons for seismic rehabilitation of RC buildings Massimiliano Ferraioli a *, Osvaldo Pecorari a , Salvatore Mottola a , Angela Diana b a Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma 9, 81031 Aversa(CE), Italy b Department of Architecture and Industrial Design, University of Campania “Luigi Vanvitelli”, Via San Lorenzo, 81031 Aversa(CE), Italy Abstract Relevant buildings like schools, public offices, assembly halls, and so on, should retain their structural integrity since their collapse could cause major human losses and significant economic impact. Moreover, such buildings should remain operational even during seismic retrofit work. This has stimulated the development of seismic retrofit solutions based on rapid, low-impact, and reversible interventions that can be done while the building is in use, removed and rapidly replaced if damaged due to earthquake, and integrated with energy efficiency measures. This situation has encouraged the use of external additive structures, commonly called exoskeletons, as a feasible solution for seismic retrofit. Typically, the research and applications deal with non-dissipative steel exoskeletons based on diagrids or external braces. This paper outlines the design and evaluation of dissipative exoskeletons. It focuses on a real school building case study, where both parallel and orthogonal exoskeleton configurations are employed. The dissipative exoskeletons are designed using a displacement-based design procedure. The effectiveness of the retrofit strategy for ductile failure modes is finally demonstrated by nonlinear time-history analyses under different sets of earthquake-ground motions. © 2024 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 SMAR 2024 Organizers Keywords: Dssipative eoskeletons; Steel strip dampers; RC buildings.Introduction 1. Introduction Many RC buildings, including relevant structures like schools and public buildings, and strategic buildings like hospitals and military constructions, are not adequately designed for seismic loading, leading to heavy damage and SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Dissipative exoskeletons for seismic rehabilitation of RC buildings Massimiliano Ferraioli a *, Osvaldo Pecorari a , Salvatore Mottola a , Angela Diana b a Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma 9, 81031 Aversa(CE), Italy b Department of Architecture and Industrial Design, University of Campania “Luigi Vanvitelli”, Via San Lorenzo, 81031 Aversa(CE), Italy Abstract Relevant buildings like schools, public offices, assembly halls, and so on, should retain their structural integrity since their collapse could cause major human losses and significant economic impact. Moreover, such buildings should remain operational even during seismic retrofit work. This has stimulated the development of seismic retrofit solutions based on rapid, low-impact, and reversible interventions that can be done while the building is in use, removed and rapidly replaced if damaged due to earthquake, and integrated with energy efficiency measures. This situation has encouraged the use of external additive structures, commonly called exoskeletons, as a feasible solution for seismic retrofit. Typically, the research and applications deal with non-dissipative steel exoskeletons based on diagrids or external braces. This paper outlines the design and evaluation of dissipative exoskeletons. It focuses on a real school building case study, where both parallel and orthogonal exoskeleton configurations are employed. The dissipative exoskeletons are designed using a displacement-based design procedure. The effectiveness of the retrofit strategy for ductile failure modes is finally demonstrated by nonlinear time-history analyses under different sets of earthquake-ground motions. © 2024 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 SMAR 2024 Organizers Keywords: Dssipative eoskeletons; Steel strip dampers; RC buildings.Introduction 1. Introduction Many RC buildings, including relevant structures like schools and public buildings, and strategic buildings like hospitals and military constructions, are not adequately designed for seismic loading, leading to heavy damage and © 2024 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 SMAR 2024 Organizers

* Corresponding author. Tel.: .+39-0815010210 fax: +39 081 5010463. E-mail address: massimiliano.ferraioli@unicampania.it * Corresponding author. Tel.: .+39-0815010210 fax: +39 081 5010463. E-mail address: massimiliano.ferraioli@unicampania.it

2452-3216 © 2024 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 SMAR 2024 Organizers 2452-3216 © 2024 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 SMAR 2024 Organizers

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