PSI - Issue 44

ScienceDirect ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Available online at w.sciencedirect.com Procedia Structural Integrity 44 (2023) 1870–1876

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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.2023.01.239 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 © 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 existing masonry and reinforced concrete built heritage is generally aged and inadequate to the seismic and energetic requirements due to natural hazards and climate change, characterizing present times. Innovative techniques deserve strong interest for improving the building perfomances, especially if including multi-task approaches. Eco-friendly and eco-sustainable materials and systems are preferred. Therefore, timber-based elements represent an optimal option, thanks to the intrinsic physical and mechanical properties of wood, among them lightness, high strength-to-weight ratios and natural sustainability, as well as easiness of production and realization along with favorable energetic performances. For these prerogatives, in recent years, timber has become a trend worldwide in the construction sector. New techniques based on the use of timber are gaining popularity for restoring existing structures belonging to historical, artistic and also productive built heritage. In this framework, the paper presents an overview on the main researches and applications concerning timber-based elements for the retrofit of existing buildings. Two macro-categories of interventions, such as global and local ones, are defined: the first includes additional timber exo- and endo-skeletons, while the second concerns the strengthening of single structural elements. The peculiarities of the interventions in the context of seismic and energetic integrated design are emphasized. Keywords: Integrated seismic and energetic retrofit, timber-based systems, existing masonry and RC structures, global and local interventions. 1. Introduction Italy is exposed to multi hazards and great part of the Italian building stock consists of no code-conforming masonry and reinforced concrete buildings characterized by a high intrinsic vulnerability with respect to exceptional actions. As a result, the Italian built heritage is considered at high natural hazards risk (Paleari, 2018). Abstract The existing masonry and reinforced concrete built heritage is generally aged and inadequate to the seismic and energetic requirements due to natural hazards and climate change, characterizing present times. Innovative techniques deserve strong interest for improving the building perfomances, especially if including multi-task approaches. Eco-friendly and eco-sustainable materials and systems are preferred. Therefore, timber-based elements represent an optimal option, thanks to the intrinsic p ysical a d echanic l properties of wood, among them lightn ss, high strength-to-w ight ratios and natur l sustainab lity, as well as easiness of prod ction an re lizat on along with favorable e ergetic performances. For th se prerogativ s, in recent yea s, imber has becom a trend worldwide in th constructio sector. New techniques based on the use of timb r are gaining popularity for re oring xisting structures belonging to hi torical, ar istic and also productive built heritage. In th s fr mework, the pa er res nts an verview on the main r earches and applications concerni g timber-ba ed elements for th retrofit of existing b ildi gs. Two m cr -c tegories o interventions, su h as glob l and l cal on s, are def n d: the first includes additional timb r exo- and en o-skeletons, while the second concerns t e str ngth ning of single structu al lements. The peculiarities of the interventions in the context of seismic and energetic integrated des gn are emph sized. Keywords: Integrated seismic and energetic retrofit, timber-based systems, existing masonry and RC structures, global and local interventions. 1. Introduc on Italy is exposed to multi hazards and great part of the Italian building stock consists of no code-conforming masonry and reinforced concrete buildings characterized by a high intrinsic vulnerability with respect to exceptional actions. As a result, the Italian built heritage is considered at high natural hazards risk (Paleari, 2018). XIX ANIDIS Conference, Seismic Engineering in Italy Timber based systems for the seismic and energetic retrofit of existing structures Giacomo Iovane a , Antonio Sandoli a , Dante Marranzini a , Raffaele Landolfo a , Andrea Prota a , Beatrice Faggiano a, * a Dept. of Structures for Engineering and Architecture, University of Naples Federico II, via Claudio 21, 80125 Naples, Italy XIX ANIDIS Conference, Seismic Engineering in Italy Timber based systems for the seismic and energetic retrofit of existing structures Giacomo Iovane a , Antonio Sandoli a , Dante Marranzini a , Raffaele Landolfo a , Andrea Prota a , Beatrice Faggiano a, * a Dept. of Structures for Engineering and Architecture, University of Naples Federico II, via Claudio 21, 80125 Naples, Italy * Corresponding author. Tel.: +39-081-7682447; fax: +39-0815934792. E-mail address: faggiano@unina.it * Corresponding author. Tel.: +39-081-7682447; fax: +39-0815934792. E-mail address: faggiano@unina.it