PSI - Issue 44

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Procedia Structural Integrity 44 (2023) 926–933

XIX ANIDIS Conference, Seismic Engineering in Italy Intrados CFRCM strengthening of masonry arches XIX ANIDIS Conference, Seismic Engineering in Italy Intrados CFRCM strengthening of masonry arches

© 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 Keywords: Masonry bridges, Masonry arch bridges, FRCM, strengthening The scaled models of t arches u ed in the tests, reproduce the geometry of the high span ratio bridges typically found i the Ital an railway lines. They were test d wit a non-sy metrical vertical load that invo ves a collapse mechani m with 4-hinges simil r to the typical eismi collapse mechani m of masonry arches. The exp rim nt l cam ign made it possible to assess increa in the arch resistance with FRCM ing syste , to simulate the load-displacements curve and to analyze the collapse mechanism of the unstrengthened and strengthened specimens. © 2022 The Authors. Published by ELSEVIER B.V. This is an ope acces article under CC BY-NC-ND lic nse ( https://creativec mmo s.org/licenses/by-nc-nd/4.0 ) P er-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: Masonry bridges, Masonry arch bridges, FRCM, strengthening This paper describes the preliminary experimental results obtained from destructive cyclic tests on masonry arches strengthened with FRCM (Fiber Reinforced Cementitious Matrix) strengthening system applied onto the arch intrados. The scaled models of the arches used in the tests, reproduce the geometry of the high span ratio bridges typically found in the Italian railway lines. They were tested with a non-symmetrical vertical load that involves a collapse mechanism with 4-hinges similar to the typical seismic collapse mechanism of masonry arches. The experimental campaign made it possible to assess the increase in the arch resistance with the FRCM strengthening system, to simulate the load-displacements curve and to analyze the collapse mechanism of the unstrengthened and strengthened specimens. This paper describes the preliminary experimen al re ults obtai ed from destructive cyclic tests on ma onry arches strengthened with FRCM (Fiber Reinforced Cem ntitious Ma rix) st engthening system applied onto the arch ntrados. Paolo Zampieri a *, Davide Santinon a , Riccardo Piazzon a , Lorenzo Hofer a , Klajdi Toska a , Flora Faleschini a , Carlo Pellegrino a , Domenico Ricci b , Francesco Iodice b , Andrea Vecchi b , Franco Iacobini b a Department of Civil, Environmental and Architectural Engineering, University of Padua, Via Marzolo 9, 35131 Padua, Italy b Rete Ferroviaria Italiana (RFI), Piazza della Croce Rossa 1, Roma, 00161, Italy Paolo Zampieri a *, Davide Santinon a , Riccardo Piazzon a , Lorenzo Hofer a , Klajdi Toska a , Flora Faleschini a , Carlo Pellegrino a , Domenico Ricci b , Francesco Iodice b , Andrea Vecchi b , Franco Iacobini b a Department of Civil, Environmental and Architectural Engineering, University of Padua, Via Marzolo 9, 35131 Padua, Italy b Rete Ferroviaria Italiana (RFI), Piazza della Croce Rossa 1, Roma, 00161, Italy Abstract Abstract

* Corresponding author. Tel.: +049 827 5570; E-mail address: paolo.zampieri@dicea.unipd.it * Correspon ing author. Tel.: +049 827 5570; E-mail address: paolo.zampieri@dicea.unipd.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 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.2023.01.120