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 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 44 (2023) 1419–1426

© 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 Abstract This work egards the analysi of the s ism c response of bridges isolated with single concave friction pendulum devic clu ing o negl cting th resence of the rigid abutment. Two six d gree-of-fre dom models are considered for th two cases, in order t represent the response of the ela tic reinforced concrete pi r an of th infinitely rig d reinf rced concrete d ck. The b havior of the friction pendulum isolators accou ts for the non-lin ar depe dency of the fric ion coefficient on the slidi g velocity. The comparison is carried out by inclu ing the aleatory unc rtainty in the seismic input (i.e., a counting for different natural records with different characteristics) and by va ying the mod lling prop rties within a parametric analysis. Finally, by solving the equations of moti in nondimensional form, the difference between the two models are deepened in terms of influence of the seismic isolation. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under h CC BY-NC-ND lic nse ( https://creativec mmo s.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy XIX ANIDIS Conference, Seismic Engineering in Italy Influence of the Pier-abutment-deck interaction on the Seismic Response of Bridges Equipped with FPS Elena Miceli a *, Luca Giordano a a Department of Structural, Geotechnical and Building Engineering (DISEG), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy Abstract This work regards the analysis of the seismic response of bridges isolated with single concave friction pendulum devices, including or neglecting the presence of the rigid abutment. Two six degree-of-freedom models are considered for the two cases, in order to represent the response of the elastic reinforced concrete pier and of the infinitely rigid reinforced concrete deck. The behavior of the friction pendulum isolators accounts for the non-linear dependency of the friction coefficient on the sliding velocity. The comparison is carried out by including the aleatory uncertainty in the seismic input (i.e., accounting for different natural records with different characteristics) and by varying the modelling properties within a parametric analysis. Finally, by solving the equations of motion in nondimensional form, the difference between the two models are deepened in terms of influence of the seismic isolation. XIX ANIDIS Conference, Seismic Engineering in Italy Influence of the Pier-abutment-deck interaction on the Seismic Response of Bridges Equipped with FPS Elena Miceli a *, Luca Giordano a a Department of Structural, Geotechnical and Building Engineering (D SEG), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy 1. Seismic isolation Seismic isolation in case of bridges has the purpose of reducing the accelerations induced in the superstructures and consequently transmitted to the piers Auad et al. (2022), Castaldo et al. (2017a-b), Castaldo and De Iuliis (2014). The safety assessment is one of the main topics for engineers and Authorities Troisi and Castaldo (2022), Troisi and 1. Seismic isolation Seismic isolation in cas of bridges has the purpose of reducing the ccelerations induce in the superstructures and consequently tra smitted to t piers Auad et al. (2022), Castaldo et al. (2017a-b), Cast ldo and De Iuliis (2014). The safety assessment is one of the main topics for engineers and Authorities Troisi and Castaldo (2022), Troisi and Keywords: seismic performance; seismic isolation; friction pendulum bearings; non-dimensional equations. Keywords: seismic performance; seismic isolation; friction pendulum bearings; non-dimensional equations.

* Corresponding author. Tel.: +39 0110905305. E-mail address: elena.miceli@polito.it * Correspon ing author Tel.: +39 0110905305. E-mail address: elena.miceli@polito.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- c-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.2023.01.182