PSI - Issue 62

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

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 62 (2024) 609–616

II Fabre Conference – Existing bridges, viaducts and tunnels: research, innovation and applications (FABRE24) Preliminary Insights from Surveys of Bridges at High Scouring Risk in West Piedmont Mauro Aimar a , Marco Civera a *, Sebastiano Foti a , and Bernardino Chiaia a a Politecnico di Torino, Department of Structural, Building and Geotechnical Engineering, Corso Duca degli Abruzzi, 24, 10129, Turin, Italy Abstract This study focuses on thirteen existing bridges of different structural typologies, located in West Piedmont (in the area under the jurisdiction of the Metropolitan City of Turin) and founded in different soil types. All of them have been previously classified as at high or very high hydraulic risk. For this reason, they are potentially subject to severe scouring, with detrimental effects on the structural behaviours and the seismic performance of the whole system. The visual surveys reported and discussed here aimed at a preliminary evaluation of the conditions of both the superstructure and the foundations. Particular attention was paid to the identification of signs of potential degradation phenomena, also in comparison with the available information from past in situ surveys. The results of these investigations highlighted some interesting cases that will be further addressed in the framework of the PNRR Spoke 7 “CCAM, Connected Networks and Smart Infrastructures” – WP4 “Resilience of Networks, Structural Health Monitoring and Asse t Management” © 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 Keywords: Bridge Surveys; Hydraulic Risk; Scouring, Metropolitan City of Turin; Geotechnical Engineering; Bridge Foundations 1. Introduction Road bridges serve as vital infrastructure crucial for transportation and commerce. However, they face various threats of various kinds – related to their structural conditions or their surrounding environment. In particular, river © 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

* Corresponding author. Tel.: +39 011-090-4911; fax: +39 011-090-4911. E-mail address: marco.civera@polito.it

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.2024.09.085