PSI - Issue 84

ScienceDirect Structural Integrity Procedia 00 (2026) 000–000 Structural Integrity Procedia 00 (2026) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

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

Procedia Structural Integrity 84 (2026) 1286–1293

© 2026 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 Conference Abstract In recent years, Structural Health Monitoring (SHM) has become an essential tool to ensure the safety and reliability of existing bridges. This study focuses on a prestressed concrete multi-span bridge in northern Italy, aiming to develop and calibrate a high fidelity finite element (FE) model using experimental monitoring data. The bridge was subjected to an extensive inspection campaign and to controlled crossing of heavy vehicles, during which dynamic response and deflections were recorded. An iterative calibration scheme was implemented to update the elastic properties of the structural components, minimizing the discrepancy between measured and numerical modal parameters. The calibrated model showed excellent agreement with the experimental natural frequencies and a satisfactory correlation with measured deflections under moving loads. The results demonstrate the reliability of the calibrated FE model and its suitability for future simulations under different traffic and potential damage scenarios, supporting bridge management and safety assessment. © 2026 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 Conference Keywords: Structural Health Monitoring; Bridge; Finite Element Model Updating; Dynamic Response; Vehicle-bridge interaction. 1. Introduction Bridge Structural Health Monitoring (SHM) has gained increasing attention over the past decades, partly due to the continuous development of more efficient sensing and data acquisition technologies and, on the other hand, to the urgent need for a deeper understanding of the structural conditions of such strategical infrastructures, especially after Abstract In recent years, Structural Health Monitoring (SHM) has become an essential tool to ensure the safety and reliability of existing bridges. This study focuses on a prestressed concrete multi-span bridge in northern Italy, aiming to develop and calibrate a high fidelity finite element (FE) model using experimental monitoring data. The bridge was subjected to an extensive inspection campaign and to controlled crossing of heavy vehicles, during which dynamic response and deflections were recorded. An iterative calibration scheme was implemented to update the elastic properties of the structural components, minimizing the discrepancy between measured and numerical modal parameters. The calibrated model showed excellent agreement with the experimental natural frequencies and a satisfactory correlation with measured deflections under moving loads. The results demonstrate the reliability of the calibrated FE model and its suitability for future simulations under different traffic and potential damage scenarios, supporting bridge management and safety assessment. © 2026 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 Conference Keywords: Structural Health Monitoring; Bridge; Finite Element Model Updating; Dynamic Response; Vehicle-bridge interaction. 1. Introduction Bridge Structural Health Monitoring (SHM) has gained increasing attention over the past decades, partly due to the continuous development of more efficient sensing and data acquisition technologies and, on the other hand, to the urgent need for a deeper understanding of the structural conditions of such strategical infrastructures, especially after III Fabre Conference: Existing Bridges, Viaducts, and Tunnels: Research, Innovation, and Applications Proof Loading Test Under Controlled Exceptional Vehicle Passages: A Case Study Tommaso Pivetta a, *, Mariano Angelo Zanini a , Lorenzo Hofer a , Carlo Pellegrino a a Department of Civil, Environmental and Architectural Engineering - DICEA, University of Padova, Via F. Marzolo, 9 – 35131 Padova, Italy III Fabre Conference: Existing Bridges, Viaducts, and Tunnels: Research, Innovation, and Applications Proof Loading Test Under Controlled Exceptional Vehicle Passages: A Case Study Tommaso Pivetta a, *, Mariano Angelo Zanini a , Lorenzo Hofer a , Carlo Pellegrino a a Department of Civil, Environmental and Architectural Engineering - DICEA, University of Padova, Via F. Marzolo, 9 – 35131 Padova, Italy

* Corresponding author. Tel.: +39-049-827-5622. E-mail address: tommaso.pivetta@phd.unipd.it * Corresponding author. Tel.: +39-049-827-5622. E-mail address: tommaso.pivetta@phd.unipd.it

2452-3216 © 2026 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 Conference 2452-3216 © 2026 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 Conference

2452-3216 © 2026 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 Conference 10.1016/j.prostr.2026.06.164