Kövesdi, B.; Kollár, D.; Dunai, L. Temporary Structural Health Monitoring of Historical Széchenyi Chain Bridge. Buildings2024, 14, 535.
Kövesdi, B.; Kollár, D.; Dunai, L. Temporary Structural Health Monitoring of Historical Széchenyi Chain Bridge. Buildings 2024, 14, 535.
Kövesdi, B.; Kollár, D.; Dunai, L. Temporary Structural Health Monitoring of Historical Széchenyi Chain Bridge. Buildings2024, 14, 535.
Kövesdi, B.; Kollár, D.; Dunai, L. Temporary Structural Health Monitoring of Historical Széchenyi Chain Bridge. Buildings 2024, 14, 535.
Abstract
A temporary monitoring system was installed on the 175-years-old historical Széchenyi chain bridge under its reconstruction process. The bridge is in the downtown area of the capital city of Hungary and plays a significant role in city life of Budapest. Six-month-long measurements were conducted during the reconstruction process of the bridge, yielding crucial insights into the structural behaviour of the historical structure. Measurement results were evaluated; the findings encompass the rotation capacity of pins between chain elements, and structural response to temperature changes. This information helped the decision-making of designers and construction company during the reconstruction made between 2021 and 2023. For instance, daily temperature fluctuations result in increased bending moments in the chain elements, rising up to 158% compared to the values observed during a proof load test in 2018. Furthermore, the measurements reveal an approximate 42% increase in normal forces compared to the proof load test, which highlights the high sensitivity of chain bridges to temperature fluctuations, where geometric stiffness plays a crucial role. Reconstruction, reducing self-weight, notably intensifies the impact on normal forces and bending moments. These outcomes strongly emphasize the dominance of dead load and self-weight in the case of chain bridges.
Keywords
structural health monitoring; historical structures; measurement; chain bridge
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
