Professional paper

https://doi.org/10.32762/zr.20.1.9

Operational Modal Analysis of Overpass Malonji

Ivana Štimac Grandić orcid.org/0000-0003-3643-7848 ; Faculty of Civil Engineering, University of Rijeka, Rijeka, Croatia
Tomislav Franković ; Faculty of Civil Engineering, University of Rijeka, Rijeka, Croatia
Paulo Šćulac ; Faculty of Civil Engineering, University of Rijeka, Rijeka, Croatia
Toni Komadina ; Faculty of Civil Engineering, University of Rijeka, Rijeka, Croatia

Abstract

This paper presents the results of an on-site dynamic testing of the pedestrian overpass Malonji using operational modal analysis for obtaining structural modal parameters. The measured modal parameters were compared to the modal parameters calculated on the numerical model of the overpass. It is shown that this type of dynamic testing and data processing can provide a very good match between measured and calculated frequencies. A more accurate determination of modal shapes derived from measured acceleration requires: (i) improvement in the ModalVIEW geometry model, (ii) using a greater number or different positions of accelerometers, (iii) accelerometers with better measuring accuracy.

Keywords

pedestrian overpass; dynamic testing; OMA; ModalVIEW

Hrčak ID:

201819

URI

https://hrcak.srce.hr/201819

Publication date:

19.6.2018.

Article data in other languages: croatian

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