PSI - Issue 44

Emanuele Renzi et al. / Procedia Structural Integrity 44 (2023) 1228–1235 Emanuele Renzi et al. / Structural Integrity Procedia 00 (2022) 000 – 000

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The Operating Instructions were drawn up following the launch by the Highway Concessionaires and ANAS S.p.A., of the first activities envisaged by the Guidelines and of the hearings of the same. In addition, in the context of the activities for the elaboration of these documents, a collection of observations was also carried out in the context of professionals who, having received safety assessment assignments, had already approached the application of the concepts and procedures of the existing Bridge Guidelines. The Operating Instructions should not be understood in terms of " updating" or "modifying" the Guidelines, but as a tool that allows the widest, easiest, uniform and immediate operation, also for the purpose of standardizing the approach by the managers to the Management Systems for the verification and maintenance of infrastructures, the promotion of which, and subsequent certification, is one of the tasks of this Agency. The preparation of an interpretative and guidance document has as its objective the identification by operators of a common and uniform approach to the multi-level procedure. In this work, the Guidelines have been imagined in an overall framework of digital information management of infrastructures, where BIM is one of the main tools, with a view to conscious risk mitigation. Particular attention was paid to the architecture of the data collected through census, inspections, classification and inspection and monitoring procedures. The goal is that in a first phase the managing bodies progressively create a digital database, in open format, for all bridges and viaducts and subsequently for other infrastructures. The Guidelines provide that information models of the infrastructure are initially created as part of the in-depth structural verification (Level 4), based on the surveys, material tests and monitoring carried out and in progress. However, the Agency understands the use of BIM should not be limited to "accurate verifications" alone, imagining a progressive multi-level approach to BIM (Fig. 2).

Fig. 2. Multi-BIM according to the multilevel approach.