Effects of Pedestrian Synchronisation on Under-Deck Cable-Stayed Footbridges
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Bibliographic Details
| Author(s): |
Konstantinos Georgiadis
(Senior Bridge Engineer Arup London, UK)
Ana M. Ruiz-Teran (Senior Lecturer in Bridge Engineering. Imperial College London, UK) Peter J. Stafford (Professor in Engineering Seismology & Earthquake Engineering, Imperial College London, UK) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024 | ||||
| Published in: | IABSE Congress San José 2024 | ||||
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| Page(s): | 1343-1350 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/sanjose.2024.1343 | ||||
| Abstract: |
Under-deck cable-stayed (UDCS) footbridges are slender structures supported by stay-cables located below the deck and possess a number of advantages such as high structural efficiency and sustainability, due to the small amount of materials. However, due to their slenderness they become more prone to vibrations induced by pedestrians. In the present work, the dynamic response of a benchmark UDCS footbridge has been investigated, considering a stochastic representation of the pedestrian loading. The effects of synchronisation of pedestrian step frequency to different lateral and torsional modes of the bridge have been examined. Results show that although synchronisation with certain modes can increase vibrations does not lead to dynamic instability in these footbridges. |
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| Keywords: |
vibrations dynamic lock-in synchronous lateral excitation pedestrian actions
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