Print Email Facebook Twitter Verification of joint input-state estimation by means of a full scale experiment on a footbridge Title Verification of joint input-state estimation by means of a full scale experiment on a footbridge Author Maes, K (Katholieke Universiteit Leuven) de Roeck, G (Katholieke Universiteit Leuven) Lombaert, G (Katholieke Universiteit Leuven) van Nimmen, K (Katholieke Universiteit Leuven) Lourens, E. (TU Delft Offshore Engineering) Rezayat, A (Vrije Universiteit Brussel) Guillaume, P (Vrije Universiteit Brussel) Contributor Bakker, Jaap (editor) Frangopol, Dan M. (editor) van Breugel, Klaas (editor) Date 2016 Abstract This paper presents a verification of a state-of-the-art joint input-state estimation algorithm using data obtained from in situ experiments on a footbridge. A dynamic model of the footbridge is based on a detailed finite element model that is calibrated using a set of experimental modal characteristics. The joint input-state estimation algorithm is used for the identification of two impact, harmonic, and swept sine forces applied to the bridge deck. In addition to these forces, unknown stochastic forces, such as wind loads, are acting on the structure. These forces, as well as measurement errors, give rise to uncertainty in the estimated forces and system states. Quantification of the uncertainty requires determination of the power spectral density of the unknown stochastic excitation, which is identified from the structural response under ambient loading. The verification involves comparing the estimated forces with the actual, measured forces. Although a good overall agreement is obtained between the estimated and measured forces, modeling errors prohibit a proper distinction between multiple forces applied to the structure for the case of harmonic and swept sine excitation. To reference this document use: http://resolver.tudelft.nl/uuid:469df266-a302-4ba1-a809-41aa8fb6285d DOI https://doi.org/10.1201/9781315375175-43 Publisher Taylor and Francis ISBN 978-1-138-02847-0 Source Life-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure: Proceedings of the 5th International Symposium on Life-Cycle Engineering, Delft, Netherlands Event 5th International Symposium on Life-Cycle Engineering, 2016-10-16 → 2016-10-20, Delft, Netherlands Series Life-Cycle of Civil Engineering Systems Part of collection Institutional Repository Document type conference paper Rights © 2016 K Maes, G de Roeck, G Lombaert, K van Nimmen, E. Lourens, A Rezayat, P Guillaume Files PDF ip_ialcce_maes_16a.pdf 1.89 MB Close viewer /islandora/object/uuid:469df266-a302-4ba1-a809-41aa8fb6285d/datastream/OBJ/view