PSI - Issue 62

Elisa Spallarossa et al. / Procedia Structural Integrity 62 (2024) 241–249 Elisa Spallarossa, Giuseppe Pasqualato/ Structural Integrity Procedia 00 (2019) 000 – 000

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Such Digital Twin is the parametrical digital representation of the main elements of bridges and viaducts, integrated with information of a geometric and/or informative nature resulting from visual inspections. The Digital Twin thus provides a decision-making basis for the development of a methodology for the dynamic management of infrastructures and for routine and predictive maintenance with a view to Asset Management. To do so, the team of specialists coordinated by Archimede Srl has investigated the modelling methodology of visual inspection data from a chosen group of viaducts for the pilot project, for which the BIM models were already available. Such models, developed with a geometric and informative level for Bim Use with project objectives, were modified and updated to obtain the level of information (LOG, LOI, documentation) useful for the digitization and modelling of inspection data (use of the model: inspection/management/Asset Management). Additional activities carried out to reach Digital Twin implementation objectives were: • the experimentation of different technological solutions and operational tools, in addition to the management methods of the data deriving from the flows created by inspection activities; • the creation of a decision-making system for BMS with the added value - for Managers, Inspectors and Technicians - of the identification of the best technological solution to display and interrogate both BIM models and related information without the need for specific modelling tools 3.1. Main activities The activities carried out for the pilot project development were, in synthesis, the following: • preparation of the database (WBS, parametrization and creation of templates) to define an approach that can be adapted to and adopted by multiple types of infrastructure (for Asset Management purposes); • update of BIM models for inspection purposes, with simultaneous definition and implementation of guidelines for the modelling of structures for inspection use. Such approach has the purpose of integrating the BIM model to the inspection data (alignment between the element model and the coding used as part of the inspection); • creation of parameters for the deterioration registration and modelling; • identification of the display mode of inspection data on models through the development of a Business Intelligence platform and creation of dashboards supporting Bridge Management system processing; • integration of the BIM model with the geometric modelling of inspected deterioration in Microsoft Power BI via a specific application; • definition and creation of dashboards supporting the display and analysis of the structure and of the detected deterioration on the visually-inspected elements; • processing of inspection data for BMS purposes, in particular for the definition of metrics for health index assessing; • identification of suitable dashboards to display the BIM and deterioration data mentioned above to provide a decision-making tool for Bridge Management with the option to set predictive, budget management and service level analyses. 4. BMS implementation within SIOS (Sistema Ispettivo Opere Sina) To perform inspection activities, Sina employs its own method - SIOS - which is based on punctual deterioration recording (type, extension, gravity and position) of each element of each span of the structure (bridge or of any other highway infrastructure structure) and the assignment of a punctual deterioration level indicator for each element and for each subsequent element aggregation level (both physical, per span and structure, and logical, per structural type of the element and spans) which finally defines the condition of the bridge with a value that enables a comparison of all structures part of an infrastructure and of other infrastructure networks. Sina inspection method, supported by specifically-developed IT solutions, enables to: • have available detailed and objective data for each element, with a graphic representation of elements and inspected deterioration and damages; • have available and searchable database defects and deterioration levels calculated to monitor their evolution over time and make forecasts on the evolution of such values;