Applying a two degree of freedom model for drive-by identification

0585972 - ÚTAM 2025 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Bayer, Jan
Applying a two degree of freedom model for drive-by identification.
Engineering mechanics 2024. Book of full texts. Brno: Brno University of Technology, 2024 - (Fuis, V.; Hájek, P.), s. 46-49. ISBN 978-80-214-6235-9. ISSN 1805-8248.
[Engineering mechanics 2024 /30./. Milovy (CZ), 14.05.2024-16.05.2024]
Grant CEP: GA ČR(CZ) GC21-32122J
Institucionální podpora: RVO:68378297
Klíčová slova: drive-by identification * structural health monitoring * finite element analysis * road roughness * two DOF system
Obor OECD: Civil engineering
https://www.engmech.cz/im/im/page/proc

A new concept of drive-by identification is examined applying the analogy with a Two Degree Of Freedom (DOF) system where the bridge is considered the ground-supported spring-mass and the moving spring-mass the second DOF. The response of the moving spring-mass is simulated on a bridge model using different road profiles and compared to parameters of the corresponding two DOF system. The focus is the spectral shift that can be observed on the moving spring-mass during its passage along the bridge and could possibly be applied for drive-by identification. The accuracy mainly depends on the relation of the moving spring-mass to the bridge mass and the relation between the natural frequency of the spring-mass and those of the bridge. The simulations showed that road profile can significantly reduce the accuracy of identified results, which imposes limits on practical applications.
Trvalý link: https://hdl.handle.net/11104/0353597