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Original title:
Analysis of aeroelastic stability improvement in pedestrian suspension bridges through deck edge variation and longitudinal ribbon implementation
Authors: Macháček, Michael ; Hračov, Stanislav ; Dejmal, Karel
Document type: Papers
Conference/Event: Computational mechanics 2025 /40./, Srní (CZ), 20251103
Year: 2025
Language: eng
Abstract: The aeroelastic stability of long-span pedestrian suspension bridges has become a critical issue in modern bridge engineering. With increasing demands for slender and lightweight structures, particularly those exceeding spans of 200 m, susceptibility to wind-induced vibrations such as flutter poses significant risks to both safety and serviceability. Flutter is a dynamic aeroelastic phenomenon that can lead to rapid oscillations and, if uncontrolled, catastrophic structural failure. Therefore, understanding and improving flutter stability in pedestrian suspension bridges is essential for their reliable design and operation. Previous studies have highlighted that the geometry of the bridge deck strongly influences aerodynamic behavior and flutter onset. Modifying the deck edges has been shown to alter the flow separation and vortex formation patterns, thereby improving aeroelastic performance. In addition to deck edge optimization, the use of supplementary devices such as longitudinal ribbons offers a promising strategy for enhancing stability. These ribbons act as flow control elements that can reduce oscillatory motion and delay critical wind speeds at which flutter occurs.
Keywords: flutter stability; wind tunnel testing; wind-induced vibrations
Project no.: GA24-13061S (CEP)
Funding provider: GA ČR
Host item entry: Computational mechanics 2025. Proceedings of computational mechanics 2025, ISBN 978-80-261-1254-9
Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://compmech.kme.zcu.cz/download/proceedings/CM2025_Conference_Proceedings.pdf
Original record: https://hdl.handle.net/11104/0371035
Permalink: http://www.nusl.cz/ntk/nusl-692696
The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
Authors: Macháček, Michael ; Hračov, Stanislav ; Dejmal, Karel
Document type: Papers
Conference/Event: Computational mechanics 2025 /40./, Srní (CZ), 20251103
Year: 2025
Language: eng
Abstract: The aeroelastic stability of long-span pedestrian suspension bridges has become a critical issue in modern bridge engineering. With increasing demands for slender and lightweight structures, particularly those exceeding spans of 200 m, susceptibility to wind-induced vibrations such as flutter poses significant risks to both safety and serviceability. Flutter is a dynamic aeroelastic phenomenon that can lead to rapid oscillations and, if uncontrolled, catastrophic structural failure. Therefore, understanding and improving flutter stability in pedestrian suspension bridges is essential for their reliable design and operation. Previous studies have highlighted that the geometry of the bridge deck strongly influences aerodynamic behavior and flutter onset. Modifying the deck edges has been shown to alter the flow separation and vortex formation patterns, thereby improving aeroelastic performance. In addition to deck edge optimization, the use of supplementary devices such as longitudinal ribbons offers a promising strategy for enhancing stability. These ribbons act as flow control elements that can reduce oscillatory motion and delay critical wind speeds at which flutter occurs.
Keywords: flutter stability; wind tunnel testing; wind-induced vibrations
Project no.: GA24-13061S (CEP)
Funding provider: GA ČR
Host item entry: Computational mechanics 2025. Proceedings of computational mechanics 2025, ISBN 978-80-261-1254-9
Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://compmech.kme.zcu.cz/download/proceedings/CM2025_Conference_Proceedings.pdf
Original record: https://hdl.handle.net/11104/0371035
Permalink: http://www.nusl.cz/ntk/nusl-692696
The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
Record created 2025-12-16, last modified 2026-01-25