Modal systems identification of an eleven-span concrete motorway off-ramp bridge using various excitations

• Published in: Engineering structures Vol. 229; p. 111604
• Main Authors: Chen, Ge-Wei, Omenzetter, Piotr, Beskhyroun, Sherif
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 15.02.2021; Elsevier BV
• Subjects: Algorithms; Bridge decks; Bridges; Damping ratio; Dynamic testing; Excitation; Excitation sources; Exogenous input; Ground motion; Mathematical models; Modal analysis; Modal identification; Numerical models; Parameter identification; Post-tensioning; Resonant frequencies; Roads & highways; Shakers; System identification; EDST; SVD; OMA; Dynamic testing; Modal analysis; FVT; Exogenous input; EMST; JT; N4SID; MAC; Bridges; OMAX; SNR; EMA; RMS; Modal identification; MEMS; System identification; LDT; Excitation sources; AVT; FE

•Broad dynamic testing programme on an 11-span curved post-tensioned concrete bridge.•Comparison of hybrid, free vibration, and forced vibration tests.•Confirmation of a good cost-to-benefit ratio of hybrid testing. This paper addresses and evaluates the influence of different types of dynamic excit...