Vibration insulation of footbridges so as to reduce human discomfort
(2014) 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014- Abstract
Low frequency vibrations in footbridges is a cause of annoyance for pedestrians crossing the bridge. Bagers bro, a footbridge built in Malmö (Sweden) had several constraints in the physical design that caused the first eigenmode of the bridge to be at 1.8Hz which is a severe problem for pedestrians. Therefore the bridge was fitted with tuned mass dampers to mitigate the vibration problem. To evaluate the performance of the dampers and the accuracy in the predictions of the Finite Element (FE) Models of the bridge, an investigation trough modeling and measurements with respect to the performance of the tuned dampers fitted to the bridge has been done. The measurements were performed both with and without the mass dampers engaged. The... (More)
Low frequency vibrations in footbridges is a cause of annoyance for pedestrians crossing the bridge. Bagers bro, a footbridge built in Malmö (Sweden) had several constraints in the physical design that caused the first eigenmode of the bridge to be at 1.8Hz which is a severe problem for pedestrians. Therefore the bridge was fitted with tuned mass dampers to mitigate the vibration problem. To evaluate the performance of the dampers and the accuracy in the predictions of the Finite Element (FE) Models of the bridge, an investigation trough modeling and measurements with respect to the performance of the tuned dampers fitted to the bridge has been done. The measurements were performed both with and without the mass dampers engaged. The results from the operational modal analysis of the bridge were compared with finite element simulations. The mass dampers were found to greatly improve the vibratory performance of the bridge in as much as making an otherwise almost unusable bridge acceptable.
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- author
- Sjöström, Anders LU ; Clausén, Christin ; Ingemansson, Victor ; Austrell, Per Erik LU ; Persson, Kent LU ; Sandberg, Göran LU ; Bard, Delphine LU ; Novak, Colin and Ule, Helen
- organization
- publishing date
- 2014
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Finite element modelling, Insulation, Operational modal analysis, Vibration
- host publication
- INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control
- publisher
- Australian Acoustical Society
- conference name
- 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
- conference location
- Melbourne, Australia
- conference dates
- 2014-11-16 - 2014-11-19
- external identifiers
-
- scopus:84923562115
- ISBN
- 9780909882037
- language
- English
- LU publication?
- yes
- id
- 1c054f36-56e2-4ef1-8161-e51c5228c27c
- date added to LUP
- 2016-04-12 13:42:13
- date last changed
- 2022-01-30 02:38:57
@inproceedings{1c054f36-56e2-4ef1-8161-e51c5228c27c,
abstract = {{<p>Low frequency vibrations in footbridges is a cause of annoyance for pedestrians crossing the bridge. Bagers bro, a footbridge built in Malmö (Sweden) had several constraints in the physical design that caused the first eigenmode of the bridge to be at 1.8Hz which is a severe problem for pedestrians. Therefore the bridge was fitted with tuned mass dampers to mitigate the vibration problem. To evaluate the performance of the dampers and the accuracy in the predictions of the Finite Element (FE) Models of the bridge, an investigation trough modeling and measurements with respect to the performance of the tuned dampers fitted to the bridge has been done. The measurements were performed both with and without the mass dampers engaged. The results from the operational modal analysis of the bridge were compared with finite element simulations. The mass dampers were found to greatly improve the vibratory performance of the bridge in as much as making an otherwise almost unusable bridge acceptable.</p>}},
author = {{Sjöström, Anders and Clausén, Christin and Ingemansson, Victor and Austrell, Per Erik and Persson, Kent and Sandberg, Göran and Bard, Delphine and Novak, Colin and Ule, Helen}},
booktitle = {{INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control}},
isbn = {{9780909882037}},
keywords = {{Finite element modelling; Insulation; Operational modal analysis; Vibration}},
language = {{eng}},
publisher = {{Australian Acoustical Society}},
title = {{Vibration insulation of footbridges so as to reduce human discomfort}},
year = {{2014}},
}