PSI - Issue 62

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 62 (2024) 1089–1096

II Fabre Conference – Existing bridges, viaducts and tunnels: research, innovation and applications (FABRE24) Risk assessment of ANAS tunnel stock in the north-east of Italy and the case study of the SHM of Comelico tunnel Ettore De La Grennelais b , Antonio Nicolò b , Alessandra Romano a , Daniele Brion a , Cheng Lan a , Tobia Zordan a, * a BOLINA Ingegneria S.r.l. - Via del Gazzato 20, 30173 Venezia – Mestre (VE), Italy b ANAS S.p.A. Struttura Territoriale Veneto e Friuli Venezia Giulia - Via Millosevich 49, 30173 Venezia – Mestre (VE), Italy Abstract The management of tunnel safety is a crucial element for the protection of road infrastructure, user safety, and the preservation of structural durability. In this context, the framework agreement between the National Autonomous Roads Corporation (ANAS) and BOLINA Engineering plays a significant role, focusing efforts on the road network in Northeast Italy and adopting advanced practices in compliance with current regulations to ensure the safety of numerous tunnels within the ANAS network. The recent Guidelines for Tunnels (Ministerial Decree number 247 of August 1, 2022: Approval of Guidelines for classification and risk management, safety assessment, and monitoring of existing tunnels along state roads or highways managed by Anas S.p.A. or highway concessionaires) constitute a robust regulatory framework for tunnel safety management, proposing a tailored, layered approach based on the criticality of individual structures. In this context, BOLINA Engineering, as a strategic partner of ANAS, actively engages in engineering activities aimed at assessing tunnel safety. Within the scope of the received mandate, BOLINA operates by focusing on the determination of the Attention Class, a crucial phase for tunnel safety management. This process involves various stages: Information Collection: Involves acquiring all design data and documenting structural characteristics through the completion of an identification form for each tunnel. Direct Visual Inspections and Surveys: Include direct visual investigations and rapid surveys of the structure, along with the analysis of geomorphological and hydraulic features. This phase aims to identify existing degradation, geometric and structural properties, and potential associated risks.

* Corresponding author. Tel.: +39-041-614185; fax: +39-041-2621945. E-mail address: zordan@bolinaingegneria.com

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4. 0 ) Peer-review under responsibility of Scientific Board Member s

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Scientific Board Members 10.1016/j.prostr.2024.09.144