PSI - Issue 78

Available online at www.sciencedirect.com

ScienceDirect

Procedia Structural Integrity 78 (2026) 301–308

© 2025 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 XX ANIDIS Conference organizers Keywords: Operational Modal Analysis (OMA); Structural Health Monitoring (SHM); Shaking table test; Reinforced concrete buildings; Abstract This work presents preliminary results from an ongoing numerical and experimental investigation aimed at supporting the seismic design and performance evaluation of a retrofitting system for reinforced concrete (RC) buildings. Shaking table tests were conducted on two full-scale, three-dimensional, single-bay, three-storey RC buildings, which included internal infills and partitions. Specifically, this study focuses on assessing the effects of a seismic retrofitting intervention installed on one of the two structures based on the output-only operational modal identification of the tested specimens. In particular, a sequence of white noise excitations was applied alternatively in between successive scaled Irpinia earthquake ground motions of progressively increasing amplitude. Frequency Domain Decomposition and Covariance-based Stochastic Subspace Identification were adopted using the PyOMA2 software. The preliminary dynamic identification results were compared with a modal analysis of a Finite Element Model of the RC real-scale specimen implemented in the Scientific Toolkit for OpenSees (STKO) software. The experimental results show quite a good agreement in terms of natural frequencies and the expected damping ratio. Future studies may also explore retrofitting assessment with input-output dynamic characterization or even machine learning-based methods. XX ANIDIS Conference Dynamic Identification for Retrofitting Assessment of Reinforced Concrete Buildings with Shaking Table: Preliminary Results Marco Martino Rosso a, *, Mahsa Daneshi Mamaghani a , Maurizio Bottini b , Guido Camata b , Giuseppe Carlo Marano a , Alessandro Contento c , Giuseppe Quaranta d a Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, Turin, Italy b Department of Engineering and Geology, University “G.d’Annunzio” of Chieti and Pescara, Pescara 65127, Italy c College of Civil Engineering, Fuzhou University, No. 2 Xue Yuan Road, Fuzhou, China d Department of Structural and Geotechnical Engineering, Sapienza University, Rome, Italy

* Corresponding author. Tel.: +39-011-090-4907 . E-mail address: marco.rosso@polito.it

2452-3216 © 2025 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 XX ANIDIS Conference organizers 10.1016/j.prostr.2025.12.039