Operational modal analysis of two identical single span road bridges (CROSBI ID 661958)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Damjanović, Domagoj ; Duvnjak, Ivan ; Bartolac, Marko ; Košćak, Janko
engleski
Operational modal analysis of two identical single span road bridges
Identification of modal parameters using response only measurements on the two identical single span road bridges is presented. The main advantage of output – only measurements is that it is not necessary to have information about excitation applied to the investigated structure. This technique is known as Operational modal analysis (OMA) as it uses ambient excitation, in this case heavy trucks passing over the bridge multiple times. Furthermore, 3D finite element numerical model of the bridge superstructure was constructed, and results were compared to the measured ones. Overview of modal parameters (natural frequencies, modal shapes and damping ratios) determined on two identical road bridges using Operational modal analysis and their comparison to the results calculated within numerical model are given. Experimentally determined modal parameters can be used for damage detection and assessment of health condition of the structure as damage, i.e. and structural deterioration causes changes in these parameters. Finally, the aim was to validate a cost effective and time saving procedure of modal parameter determination.
operational modal analysis, modal parameters, road bridges, natural frequency, modal shapes
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Podaci o prilogu
103-110.
2018.
objavljeno
10.5592/CO/CETRA.2018.901
Podaci o matičnoj publikaciji
Proceedings of the 5th International Conference on Road and Rail Infrastructure - CETRA 2018
Lakušić, Stjepan
Zagreb: Građevinski fakultet Sveučilišta u Zagrebu
978-953-8168-25-3
1848-9850
Podaci o skupu
5th International Conference on Road and Rail Infrastructure (CETRA 2018)
predavanje
17.05.2018-19.05.2018
Zadar, Hrvatska