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) 468–475

II Fabre Conference – Existing bridges, viaducts and tunnels: research, innovation and applications (FABRE24) Risk assessment and rotation monitoring of a masonry arch bridge according to the Lombardia Regional Guidelines Paolo Borlenghi a , Carmelo Gentile a * , Manuel D’Angelo b,c , Francesco Ballio b a Dept. of Architecture, Built environment and Construction engineering (DABC), Politecnico di Milano, P.za L. da Vinci 32, 20133 Milan, Italy b Dept. of Civil and Environmental Engineering (DICA), Politecnico di Milano, P. L. da Vinci 32, 20133 Milan, Italy c Tecnoindagini Srl, Via Monte Sabotino 14, 20095 Cusano Milanino (MI), Italy Abstract Within a recent project between Politecnico di Milano and Regione Lombardia, a methodology was developed for the structural/hydraulic risk assessment and monitoring of bridges. In the paper, the methodology is applied to a historical masonry arch bridge called the Candia bridge. The bridge is known to be affected by riverbed erosion; consequently, the definition of a monitoring system to detect scour-induced effects is addressed. In the present study, measurements of the pier rotations are performed using tiltmeters; in addition, environmental parameters (such as temperature, water level and riverbed changes) are monitored to check possible correlation with the measured rotations. The results from the first two years of monitoring highlight anomalous changes in the rotation-temperature correlation of various piers. © 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: Arch bridges; Historical constructions; Novelty detection; Scour; Structural Health Monitoring; Temperature effects. 1. Introduction In the Italian context, the publication of the Guidelines on Risk Classification and Management of Bridges in 2020 (Italian Ministry of Infrastructures 2020) has established a common framework for infrastructure risk-based © 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)

* Corresponding author. Tel.: +39-022399-4242. E-mail address: carmelo.gentile@polimi.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.2024.09.067