PSI - Issue 84

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ScienceDirect

Procedia Structural Integrity 84 (2026) 773–780

© 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 This study reports on the initial outcomes of an extensive full-scale experimental program conducted on a prestressed reinforced concrete bridge mockup equipped with a continuous monitoring system. The main purpose of the project is to develop a reliable and high-quality benchmark dataset to support the testing, validation, and comparison of continuous structural health monitoring methodologies. The bridge mockup is composed of three longitudinal girders and features a combination of pretensioned and post tensioned tendons. To allow controlled variations of the prestressing level, the post-tensioning ducts were intentionally left ungrouted. A dense and multi-type sensor network was deployed on the structure to capture its response under both static and dynamic conditions. The instrumentation includes triaxial MEMS accelerometers, biaxial inclinometers, strain gauges, load cells, and thermocouples, allowing the simultaneous acquisition of data related to vibrations, rotations, strains, applied prestressing forces, as well as temperature and humidity variations. The complete experimental program comprises a series of static and dynamic tests, along with a set of controlled damage scenarios introduced by progressively reducing stiffness and prestressing level under predefined configurations. This paper focuses on the results obtained during the initial phase of monitoring, when the bridge was still in an undamaged state. The modal parameters extracted from the recorded data are analyzed, and their dependence on environmental and operational conditions is discussed. During this early monitoring period, the structure underwent three different structural configurations because of modifications to the concrete barriers installed along the deck, offering a valuable opportunity to investigate the sensitivity of the measured structural response to such configuration variations. III Fabre Conference: Existing Bridges, Viaducts, and Tunnels: Research, Innovation, and Applications Structural Health Monitoring of a Full-Scale Prestressed Reinforced Concrete Bridge: Preliminary Results from a Case Study Francesco Mariani a *, Laura Ierimonti a , Prajwal Giri a , Arash Rahimi a , Enrique Garcìas Macìas b , Leonardo Casali c , Manuel Boccolini c , Filippo Ubertini a , Ilaria Venanzi a a University of Perugia, Via G. Duranti, 93, Perugia, 06125, Italy b University of Granada, Campus Universitario de Fuentenueva, Granada, 18071, Spain c Manini Prefabbricati S.p.a., Via S. Bernardino da Siena, 33, S. Maria degli Angeli, 06081, Italy

* Corresponding author. Tel.: +39-327-549-0524. E-mail address: francesco.mariani@dottorandi.unipg.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 10.1016/j.prostr.2026.06.099