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Design and construction of a very lively bridge
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Živanović, Stana, Johnson, R. P. (Roger Paul), Đặng, Hiệp Vũ and Dobrić, J. (2013) Design and construction of a very lively bridge. In: Catbas, Fikret Necati and Pakzad, Shamim and Racic, Vitomir and Pavic, Aleksandar and Reynolds, Paul, (eds.) Topics in Dynamics of Civil Structures, Volume 4 : Proceedings of the 31st IMAC, A Conference on Structural Dynamics, 2013. Conference Proceedings of the Society for Experimental Mechanics Series . Springer New York, pp. 371-380. ISBN 9781461465546
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Official URL: http://dx.doi.org/10.1007/978-1-4614-6555-3_41
Abstract
In recent years, an increasing number of light structures has been reported to exhibit substantial vertical vibrations when exposed to pedestrian-induced dynamic loading. It is believed that pedestrians interact with lively structures by altering their walking style and changing the dynamic properties of the vibrating system. As the existing vibration serviceability guidelines do not address these pedestrian-structure interaction effects, they cannot predict the structural dynamic response accurately. Fundamental understanding of the pedestrian-structure interaction is currently limited since most reported observations are of qualitative nature. To improve understanding and develop models of human interaction with lively structures, a purpose-built experimental facility that can be excited by human walking is required. This paper describes design and construction of a 19.9 m long, low-frequency and lightly damped experimental bridge for studying pedestrian-structure interaction. The challenge to design a relatively heavy and low-frequency footbridge in the limited space of the Structures Laboratory at the University of Warwick, UK, was met by adopting a traditional steel-concrete composite structural system. The experimental data collected on the "Warwick Bridge" during first six-months of structural life are presented to characterise both its static and dynamic behaviour. Dynamic testing of the bridge revealed that, with an achieved fundamental natural frequency of 2.4 Hz, the corresponding damping ratio of 0.5%, and an opportunity to tune the dynamic properties as required, the key design criteria were successfully met.
| Item Type: | Book Item | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Series Name: | Conference Proceedings of the Society for Experimental Mechanics Series | ||||
| Publisher: | Springer New York | ||||
| ISBN: | 9781461465546 | ||||
| ISSN: | 2191-5644 | ||||
| Book Title: | Topics in Dynamics of Civil Structures, Volume 4 : Proceedings of the 31st IMAC, A Conference on Structural Dynamics, 2013 | ||||
| Editor: | Catbas, Fikret Necati and Pakzad, Shamim and Racic, Vitomir and Pavic, Aleksandar and Reynolds, Paul | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Page Range: | pp. 371-380 | ||||
| DOI: | 10.1007/978-1-4614-6555-3_41 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Description: | |||||
| Conference Paper Type: | Paper | ||||
| Location of Event: | Garden Grove, CA, United States | ||||
| Date(s) of Event: | 11-14 Feb 2013 |
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