Model updating concept using bridge Weigh-in-Motion dataHekič, Doron (Avtor) Anžlin, Andrej (Avtor) Kreslin, Maja (Avtor) Žnidarič, Aleš (Avtor) Češarek, Peter (Avtor) monitoringbridgeviaductbridge weigh-in-motion (B-WIM)structural health monitoring (SHM)finite element (FE)calibrationmodel updatingFinite element (FE) model updating of bridges is based on the measured modal parameters and less frequently on the measured structural response under a known load. Until recently, the FE model updating did not consider strain measurements from sensors installed for weighing vehicles with bridge weigh-in-motion (B-WIM) systems. A 50-year-old multi-span concrete highway viaduct, renovated between 2017 and 2019, was equipped with continuous monitoring system with over 200 sensors, and a B-WIM system. In the most heavily instrumented span, the maximum measured longitudinal strains induced by the full-speed calibration vehicle passages were compared with the modelled strains. Based on the sensitivity study results, three variables that affected its overall stiffness were updated: Young’s modulus adjustment factor of all structural elements, and two anchorage reduction factors that considered the interaction between the superstructure and non-structural elements. The analysis confirmed the importance of the initial manual FE model updating to correctly reflect the non-structural elements during the automatic nonlinear optimisation. It also demonstrated a successful use of pseudo-static B-WIM loading data during the model updating process and the potential to extend the proposed approach to using random B-WIM-weighed vehicles for FE model updating and long-term monitoring of structural parameters and load-dependent phenomena.MDPI20232023-03-01 12:53:17Neznano16323UDK: 624ISSN pri članku: 1424-8220DOI: 10.3390/s23042067COBISS_ID: 142607363sl© 2023 by the authors. Licensee MDPI, Basel, Switzerland.