PSI - Issue 44

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

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

Procedia Structural Integrity 44 (2023) 574–581

© 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 Hybrid Coupled Shear Walls are an innovative seismic-resistant system that aims at merging the advantages of the classical Coupled Shear Walls with the dissipative capacity and easy-to-repair characteristics of steel elements. They are constituted by a reinforced concrete wall connected to two side steel columns by dissipative steel links. Depending on the stiffness/strength of the links, it is possible to obtain different distributions of the seismic forces between the wall and the columns. As resulting from previous research activity on this topic, the seismic behavior of this structural system can be strongly influenced by the higher modes, especially for mid/high-rise buildings, making classical pushover analyses unable to catch the correct behavior. In this regard, the paper presents the comparison between the results of Incremental Dynamic Analyses and of different Pushover Analyses, giving indications about a more reliable procedure for the assessment of the seismic performance through suitable pushover analysis. © 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: Hybrid Coupled Shear Walls, multimodal analysis, higher modes, dynamic behavior. 1. Introduction Dissipative systems are well known solutions adopted to design seismic-resistant structures. In the last decades, research was concentrated in developing easy-to-repair systems, that together with dedicated capacity design rules localize the damage and avoid reconstructing the entire building. In this field, different solutions were studied for steel structures, such as for concentric bracings systems (Natali et al. 2022a, Natali et al. 2022b, Natali et al. 2022c, XIX ANIDIS Conference, Seismic Engineering in Italy Seismic behavior and nonlinear analysis of Hybrid Coupled Shear Walls Francesco Morelli a *, Agnese Natali a , Gabriele Poggi a a Department of Industrial and Civil Engineering, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy Abstract Hybrid Coupled Shear Walls are an innovative seismic-resistant system that aims at merging the advantages of the classical Coupled Shear Walls with the dissipative capacity and easy-to-repair characteristics of steel elements. They are constituted by a reinforced concrete wall connected to two side steel columns by dissipative steel links. Depending on the stiffness/strength of the links, it is possible to obtain different distributions of the seismic forces between the wall and the columns. As resulting from previous research activity on this topic, the seismic behavior of this structural system can be strongly influenced by the higher modes, especially for mid/high-rise buildings, making classical pushover analyses unable to catch the correct behavior. In this regard, the paper presents the comparison between the results of Incremental Dynamic Analyses and of different Pushover Analyses, giving indications about a more reliable procedure for the assessment of the seismic performance through suitable pushover analysis. © 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 t scientific committe of the XIX ANIDIS C nference, Seismic Engineering in Italy Keywords: Hybrid Coupled Shear Walls, multimodal analysis, higher modes, dynamic behavior. 1. Introduction Dissipative systems are well known solutions adopted to design seismic-resistant structures. In the last decades, research was conc ntrated in devel ping easy-to-repair system , that together with dedi ated capacity design rules localize the damage and avoi reconstructing the ntire building. In this field, differ nt solutions were studied for steel structures, such s for conc ntric braci s systems (Natali et al. 2022a, Natali t al. 2022b, Natali et al. 2022c, XIX ANIDIS Conference, Seismic Engineering in Italy Seismic behavior and nonlinear analysis of Hybrid Coupled Shear Walls Francesco Morelli a *, Agnese Natali a , Gabriele Poggi a a Department of Industrial and Civil Engineering, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy

* Francesco Morelli. Tel.: +39-050-22-18-257 E-mail address: francesco.morelli@ing.unipi.it * Francesco Morelli. Tel.: +39-050-22-18-257 E-mail address: francesco.morelli@ing.unipi.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 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 © 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.2023.01.075