PSI - Issue 78

Available online at www.sciencedirect.com

ScienceDirect

Procedia Structural Integrity 78 (2026) 1673–1680

© 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: Structural Health Monitoring; Operational Modal Analysis; Base-isolated structures; Hybrid Isolation System, Seismic transient response;Seismic performance assessment Abstract The integration of Structural Health Monitoring (SHM) systems provides essential capabilities for real-time assessment of structural integrity, enabling the detection of damage, deterioration, and serviceability changes, particularly after seismic events. SHM is especially relevant in base-isolated structures, where monitoring supports verification of isolation performance, validation of analytical models, and evaluation of deviations from design assumptions under dynamic loading. This study presents the implementation and preliminary results of a permanent SHM system installed in the newly constructed Chemistry Interdisciplinary Project (ChIP) Research Centre at the University of Camerino, funded by the Italian Civil Protection Department after the 2016 Central Italy earthquakes. The building comprises a two-storey steel braced-frame structure on a reinforced concrete slab isolated from the foundations resting on a steep slope through a hybrid system constituted by 28 high damping rubber bearings (HDRBs) and 36 low-friction sliding bearings. The SHM system, integrated from the construction stage, includes accelerometers, linear position transducers, and strain gauges placed throughout the superstructure and isolation interface to capture the building’s dynamic response. Over one year of monitoring, Ambient Vibration Testing (AVT) and Operational Modal Analysis (OMA) were performed to evaluate modal properties under ambient excitations. Furthermore, the building’s response to a local Mw 3.5 earthquake was analyzed. The results provide insights into the in-service performance of hybrid base-isolated systems under seismic, environmental, and operational loads, highlight the significance of long-term SHM. XX ANIDIS Conference Preliminary structural health monitoring results of a hybrid base-isolated building in Camerino, Italy Michele Morici a, * , Lorenzo Principi a , Laura Gioiella a , Fabio Micozzi b , Alessandro Zona a , Andrea Dall’Asta c a School of Architecture and Design, University of Camerino, Viale della Rimembranza 3, 63100 Ascoli Piceno, Italy b Scientific and Technical Laboratory Support Area,University of Camerino, Via Le Mosse 20, 62032 Camerino, Italy c School of Science and Technology, University of Camerino, Via Gentile III da Varano 7, 62032 Camerino, Italy

* Corresponding author. E-mail address: michele.morici@unicam.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.2025.12.213