Abstract
The number of bridges that are approaching or exceeding their initial design life has increased radically. Meanwhile, an ever-increasing volume of traffic each year, both in number and weight of vehicles, is creating an additional critical situation for this kind of structure. To predict the response of bridges to traffic loads and their ultimate capacity with low uncertainties, we can use numerical structural models; however, such uncertainties increase as bridges age due to deterioration mechanisms. Non-destructive tests of material specimens and full-scale on-site load tests of the structure allow to update model parameters and have a better estimate of the bridge behaviour. However, different load tests provide different information with different impacts on the updated model accuracy. With the aid of a real-life case study, the Alveo Vecchio highway bridge, which has been tested to failure with a sequence of progressively increasing load, we aim to understand what behaviour can predict a structural model and what we can learn from a load test. This study is part of a research agreement between the Italian Ministry of Sustainable Infrastructure and Mobility, Autostrade per l’Italia SpA (the main operator of Italian highways), and the University of Trento. It concerns the management and monitoring of civil infrastructure intending to develop survey protocols and monitor systems to assess the safety and performance of existing highway bridges.
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Acknowledgments
This research has been supported by the Italian Ministry of Sustainable Infrastructures and Mobility (MIMS) and Autostrade per l’Italia SpA (ASPI), MIUR PON RI 2014–2020 Program (project MITIGO, ARS01_00964), Consorzio ReLUIS (Project ReLUIS Ponti 2021–2022 ‘Implementation of provisions of DM 578/2020’) and Fondazione CARITRO Cassa di Risparmio di Trento e Rovereto (grant number 2021.0224).
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Rossi, F., Brighenti, F., Verzobio, A., Tonelli, D., Zonta, D., Migliorino, P. (2023). Comparison Between Model Prediction and Measured Response of a Prestressed Concrete Bridge Tested to Failure. In: Rizzo, P., Milazzo, A. (eds) European Workshop on Structural Health Monitoring. EWSHM 2022. Lecture Notes in Civil Engineering, vol 253. Springer, Cham. https://doi.org/10.1007/978-3-031-07254-3_55
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DOI: https://doi.org/10.1007/978-3-031-07254-3_55
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