Preliminary communication

Damage identification of bridges from vibration frequencies

Ivana Mekjavić ; University of Zagreb, Faculty of Civil Engineering, Kačićeva 26, 10000 Zagreb, Croatia

Abstract

This paper outlines the research aimed at developing an effective and reliable monitoring method for structural damage identification. A computational procedure for a direct iteration technique based on the non-linear perturbation theory is proposed to identify structural damage, when information about only natural frequencies for the damaged structure is required. The presented damage identification technique is applied to six concrete girder bridges of different ages in Croatia. It is found that the proposed approach is quite sensitive to the quality of measured natural frequencies for structural damage identification due to the ill-conditioned system of governing equations.

Keywords

bridges; monitoring; structural damage identification; vibration frequencies

Hrčak ID:

97493

URI

https://hrcak.srce.hr/97493

Publication date:

22.2.2013.

Article data in other languages: croatian

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