PSI - Issue 64

Antonio Bilotta et al. / Procedia Structural Integrity 64 (2024) 2109–2116 "Bilotta et al." / Structural Integrity Procedia 00 (2023) 000 – 000

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5. Conclusions The paper outlines the Structural Health Monitoring (SHM) system developed for evaluation of the structural behavior of eight ramp viaducts linking the Naples port with highway infrastructure. Constructed primarily with precast concrete (PC) beams and reinforced concrete (RC) slabs in the 1970s, these bridge decks face increased traffic loads beyond their original design parameters, and natural degradation of materials, particularly in vulnerable areas of structural elements. Consequently, a continuous monitoring system was installed to address these concerns, necessitating detailed analysis and investigation to ensure structural reliability and facilitate efficient maintenance. The SHM system aligns with the project's objectives, allowing both daily checks against critical thresholds using key parameters and providing information for updating Finite Element (FE) models accurately. Initial findings reveal significant variations in loads throughout the day and highlight the pronounced dynamic effects of vehicular traffic. Further analysis and integration of data from diverse sensor types are expected to yield insights into the structure's response. Acknowledgement The presented work has been performed thanks to funding from the DiSt – SIPAL spa agreement for the years 2023-2024 and partially carried out as part of the activities envisaged by the Agreement between the High Council of Public Works (CSLLPP) and the ReLUIS Consortium implementing Ministerial Decree 578/2020 and Ministerial Decree 240/2022. The contents of this paper represent the authors’ ideas and do not necessarily correspond to the official opinion and policies of the funding entities. References Altunisik A.C. &Bayraktar A. (2017). Manual model updating of highway bridges under operational condition. Journal of Structures and Systems, 19: 39-46. Bilotta A., De Angelis A., Testa G., Starace L., Pecce M.R. (2021). Use of static and dynamic test results for model updating of a steel concrete composite bridge. In: Proc. of the 2nd fib Symposium on Concrete and Concrete Structures Nov 18th-19th, 2021, Sapienza University, Rome, Italy Sahar Hassani, Ulrike Dackermann, Mohsen Mousavi, Jianchun Li, (2024) A systematic review of data fusion techniques for optimized structural health monitoring, Information Fusion, Volume 103, 2024, 102136, ISSN 1566-2535, https://doi.org/10.1016/j.inffus.2023.102136. Ko J.M., Ni Y.Q. (2005). Technology developments in structural health monitoring of large-scale bridges. EngStruct; 27:1715-25. Z.X. Li, T.H.T. Chan, J.M. Ko (2001) Fatigue analysis and life prediction of bridges with structural health monitoring data — Part I: methodology and strategy. International Journal of Fatigue 23 (2001) 45 – 53 www.elsevier.com/locate/ijfatigue Morandi R. (1980) The structure for the new road link system between the motorway and the port of Naples. L’industria italiana del cemento. Anno 50. AITEC. Rome. Darryll Pines, A Emin Aktan (2002). Status of structural health monitoring of long-span bridges in the United States. https://doi.org/10.1002/pse.129. Progress in Structural Engineering and Materials. Wiley Schlune, H., Plos, M., Gylltoft K. (2009). Improved bridge evaluation through finite element model updating using static and dynamic measurements. Eng. Struct. 31: 1477 – 1485 Zhen Sun, Zilong Zou, Yufeng Zhang (2017) Utilization of structural health monitoring in long-span bridges: Case studies https://doi.org/10.1002/stc.1979. Structural control health monitoring Xiang,W.;Wei, J.; Zhang, F. (2023) Structural Health Monitoring Design and Performance Evaluation of a Middle-Span Bridge. Sensors, 23, 8702. https://doi.org/10.3390/S23218702