Abstract
This report presents results from an effort to update Finite Element Model parameters of Skattørsundet bridge in Troms county, Norway, to reproduce the natural transversal swaying of the bridge. This work is part of Work Package 2 of the project “Development of solutions for health monitoring of concrete bridges”. The result demonstrates that the simplest way to match the modelled movement of the bridge to measurements is by dividing the bridge into three sections: the deck, pillars 1 to 27, and pillars 28 to 41. While the inferred material properties of the deck were as expected for concrete used in the 1970s, the inferred material properties of pillars 1 to 27 were of lower quality, and the inferred quality of the material of pillars 28 to 41 was even lower. However, this interpretation assumes that the bridge was built with dimensions as described in the planning documents. The sensitivity of the results to this assumption should be investigated. This report shows how the 3-division of the bridge was determined and provides a starting point for more refined structural health investigations of the bridge.