engleski

Analysis of numerical modelling influence on dynamic bridge structures calculation

During the last few years, we have been involved in the static and dynamic testing of different bridge structures (bridges, viaducts, overpasses, underpasses, etc.), which are connected to the new Adriatic highway. This paper presents how different and very similar numerical models of the same bridge structure can produce different results of dynamic calculation. Two overpasses, namely Bile Laze and Vrbanj, were presented through real structural properties, model properties and calculated data compared with the in situ test results. The main goal of this paper is to help in model determination, as well as to realise the most possible correctness and reliability of obtained numerical results. In the paper, we will show and discuss some of the analyzed numerical modelling influences of the results of the dynamic bridge structure calculation compared with the measured results.

bridges; numerical modelling; dynamics; testing; eigenfrequencies

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