Temporary monitoring system on the pedestrian cable bridge in Sátoraljaújhely, Hungary – a case study

Hegyi, Péter and Kövesdi, Balázs Géza and Dunai, László and Rózsa, Szabolcs and Égető, Csaba and Turák, Bence Dávid (2026) Temporary monitoring system on the pedestrian cable bridge in Sátoraljaújhely, Hungary – a case study. CE/PAPERS, 9 (2-3). pp. 1419-1422. ISSN 2509-7075

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Abstract

This report summarises the results of a temporary monitoring system installed on a 700 m span pedestrian cable bridge in Hungary. Measurements were carried out from March to September 2024 following a static load test and continued through the commissioning and operational phases. The monitoring system included GPS‐based geodetic measurements, wind speed and direction sensors, structural temperature sensors and accelerometers, providing comprehensive insight into the bridge's structural behaviour. The measurements show that the bridge geometry is predominantly influenced by daily and seasonal temperature variations. Wind‐induced effects were also observed, including vertical and torsional vibration components. Measurement results were compared to numerical model results developed during the design phase of the structure. The derived natural frequencies matched numerical predictions well, the temperature movements were correlating nicely, too. GPS‐based and accelerometer‐based vibration analysis matched acceptably, considering the possibilities of applied sensors. All these confirm that the structure performs in accordance with design expectations.

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