PSI - Issue 64

Carmine Lupo et al. / Procedia Structural Integrity 64 (2024) 645–652 Lupo C., Petti L. & De Gaetano C.M. / Structural Integrity Procedia 00 (2019) 000 – 000

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young specialists. The surveillance model considers a BMS capable of integrating GIS, BIM, Risk representations, multidisciplinary management processes and expertise, within the CUGRI Information System. In June 2023 the implementation of L1 and L2 was completed, with the definition of the CdAs, for each bridges and viaducts of the A3 highway. The obtained results from the application of LG20 show that: • The Overall CdA may be a useful indicator for estimating the attention level required for each bridge, however, it may be useful to consider the Defectiveness Level to determine maintenance priorities and the Seismic CdA to define the best intervention/retrofit strategy for each structure; • The combination matrix provided by LG20 for the definition of hydraulic and landslide CdA tends to underestimate the influence of the single hazard if they are not simultaneously present; • In the case of A3 highway, the local hazard conditions, such as hydro-geomorphological and geotechnical ones, played a more substantial role in the Overall CdA evaluation for medium and low levels, instead the structural and foundational CdA more influence for higher values. Therefore, the results highlights the need to develop more in-depth studies to better calibrate the LG20 model, based on the approach for class and logical operators, in the evaluation of the Overall CdA, also considering the managing bodies operational possibilities. Moreover, it is relevant to highlight that while the road managing bodies are directly involved in the maintenance of the structures, natural hazard conditions could need the engagement of territorial entities in the overall risk management process. Acknowledgments The study was carried out thanks to the CUGRI and the highway’s managing bodies SAM and SiS -SPN. References AIA G202-2013, Project Building Information Modeling Protocol Form, The American Institute of Architets, https://www.aia.org/ Buratti, G. et al. (2022), The New Guidelines of Italian Ministry of Infrastructures for the Structural Risk Classification of Existing Bridges: Genesis, Examples of Application and Practical Considerations, EUROSTRUCT 2021, Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures, Springer, Cham, vol. 200 p. 835 – 844, doi: https://doi.org/10.1007/978-3-030-91877-4_95 Capogna M et al. (2023), Guidelines for the classification and management of risk, for the evaluation of safety and the monitoring of existing bridges”. An automatic calculation model of the seismic attention class optimized for the use of cloud computing services, Procedia Structural Integrity, Elsevier, Amsterdam, vol. 44 p.705-712, doi: https://doi.org/10.1016/j.prostr.2023.01.092 Locati M et al., (2022), Database Macrosismico Italiano (DBMI15), versione 4.0. Istituto Nazionale di Geofisica e Vulcanologia (INGV). https://doi.org/10.13127/DBMI/DBMI15.4 Ministry of Infrastructure and Transport (2018), Law Decree 109/2018 “ Urgent Provisions for the City of Genoa, the Security of the National Infrastructure and Transport Network, the Seismic Events of 2016 and 2017, Work and Other Emergencies. (18G00137) ”, Italy . Ministry of Infrastructure and Transport (2020), Superior Council for Public Works, Guidelines for Risk Classification and Management, Safety Assessment and Monitoring of Existing Bridges, Italy Ministry of Infrastructure and Transport (2022), Ministerial Decree 204/2022, Adoption of the Guidelines for the risk management of existing bridges and of the Operating Instructions for the application of the Guidelines themselves, Italy Petti L, Lupo C and De Gaetano C M, (2023), A Methodological Framework for Bridge Surveillance. Applied Sciences, Multidisciplinary Digital Publishing Institute (MDPI), Basel, Switzerland, vol. 13, DOI: https://doi.org/10.3390/app13084975 Pregnolato M et al.,, 2022, A comparison of the UK and Italian national risk-based guidelines for assessing hydraulic actions on bridges, Structure and Infrastructure Engineering, Taylor & Francis Group, Milton Park, DOI: 10.1080/15732479.2022.2081709 Sanseverino A et al., (2022), An HBIM Methodology for the Accurate and Georeferenced Reconstruction of Urban Contexts Surveyed by UAV: The Case of the Castle of Charles V, Remote Sensing, Multidisciplinary Digital Publishing Institute (MDPI), Basel, doi: https://doi.org/10.3390/rs14153688 Santarsiero G et al., (2021), The Italian Guidelines on Risk Classification and Management of Bridges: Applications and Remarks on Large Scale Risk Assessments, Infrastructures, 6, Multidisciplinary Digital Publishing Institute (MDPI), Basel, doi: https://doi.org/10.3390/infrastructures6080111 UNI 11337-ITA, Italian regulations for the BIM methodology, Italian National Unification Body, https://uni.com/index.php UNI EN ISO 19011:2018, Guidelines for management system AUDITS, Italian National Unification Body, https://uni.com/index.php