Finite element model updating of a ferry dock bridge

An accurate finite element representation of a real structure allows designers to investigate how it will perform over time when exposed to external loading in order to ensure economical de-sign, structural safety, and a more accurate estimation of the remaining useful life of that structure. For structures such as ferry dock bridges that have been little studied in the past, there are many uncertainties related to properly modelling in finite element software. In such cases, a finite element updating technique can shed a light on uncertain parameters. This paper presents results from the finite element model updating of the Rykkjem ferry dock bridge in Norway based on vibration test data with an emphasis on the estimation of vertical stiffness provided by the lifting towers.