Operational modal analysis and assessment of an historic RC arch bridge

摘要

This paper summarizes the dynamics-based assessment of a historic reinforced concrete arch bridge. The bridge, known as Victory bridge and originally constructed in 1923, spans 75 m over a deep valley in the Province of Lecco, Italy. The outlined investigation included ambient vibration testing, output-only modal identification, finite element modelling and updating of the uncertain structural parameters of the model.