Response estimation for a floating bridge using acceleration output only

Response estimation for a floating bridge using acceleration output only

Petersen, Øyvind Wiig (Norwegian University of Science and Technology (NTNU))
Øiseth, Ole (Norwegian University of Science and Technology (NTNU))
Nord, Torodd Skjerve (Norwegian University of Science and Technology (NTNU))
Lourens, E. (TU Delft Offshore Engineering)

Sas, P. (editor)
Moens, D. (editor)
van de Walle, A. (editor)

2016

The Norwegian Public Roads Administration is reviewing the possibility of using floating bridges as fjord crossings. The dynamic behaviour of very long floating bridges with novel designs are prone to uncertainties. Studying the dynamic behaviour of existing bridges is valuable for understanding the in-situ performance. We present a case study of the Bergsøysund Bridge, a 840 m long floating pontoon bridge located in Norway. An extensive monitoring system is installed on the bridge, including a network of accelerometers. A finite element model of the bridge is established. Using the measured acceleration output and recently developed Kalman filter based methods (a joint input-state (JIS) estimation algorithm and a dual Kalman filter (DKF)), we estimate accelerations at unmeasured locations. It is shown that the estimated response from the DKF agrees well with direct reference measurements. For the JIS, numerical instabilities in the estimates occur due to ill-conditioning of the matrices used in the system inversion.

http://resolver.tudelft.nl/uuid:6fda1e66-c954-4b4f-a84f-99d98a970073

KU Leuven

9789073802940

Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering: and USD2016 - International Conference on Uncertainty in Structural Dynamics

27th International Conference on Noise and Vibration Engineering and International Conference on Uncertainty in Structural Dynamics, 2016-09-19 → 2016-09-21, Leuven, Belgium

Institutional Repository

conference paper

© 2016 Øyvind Wiig Petersen, Ole Øiseth, Torodd Skjerve Nord, E. Lourens