Naslov
Damage identification in footbridges from natural frequency measurements

Autori
Mekjavić, Ivana ; Damjanović, Domagoj

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014 / Cunha, A., Caetano, E., Ribiero, P., Muller, G. - Porto : Classica, Artes Graficas, 2014, 2525-2529

ISBN
978-972-752-166-1

Skup
9th International Conference on Structural Dynamics, EURODYN 2014

Mjesto i datum
Porto, Portugal, 30.06.2014. - 02.07.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Footbridges; Damage identification; Natural frequency measurements

Sažetak
An approach for the structural damage identification based on the measurement of natural frequencies is presented. The structural damage model is assumed to be associated with a reduction of a contribution to the element stiffness matrix equivalent to a scalar reduction of the material modulus. A computational procedure for the direct iteration technique based on the non-linear perturbation theory is proposed to identify structural damage. The presented damage identification technique is applied to the footbridge over the Slunjcica River near Slunj to demonstrate the effectiveness of the proposed approach. Using a limited number of measured natural frequencies, reduction in the stiffness of up to 100% at multiple sites is detected.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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