Original title: Experimental and numerical verification of vortex-induced vibration of hangers on the footbridge
Authors: Urushadze, Shota ; Pirner, Miroš ; Pospíšil, Stanislav ; Král, Radomil
Document type: Papers
Conference/Event: Engineering mechanics 2012 - International conference /18./, Svratka (CZ), 2012-05-14 / 2012-05-17
Year: 2012
Language: eng
Abstract: The paper deals with vortex-induced oscillations of footbridge hangers at a very low wind speed. The two-spans (2x50m) reinforced concrete structure with the central pylon (25m height) is designed as the harp system of hangers with circular cross-section. The oscillations were observed at the low wind speed and the high double amplitudes has been measured. The wind-excited deformation shape corresponded to the 6th, 7th and 8th natural modes of a hanger. The individual hanger as well as thein group were analysed to estimate the dynamic response, possible aeroelastic vibration and special interference or coupling effects. It also includes proposal for the elimination of the extensive vibration. The analysis is complemented by numerical investigation using Computational Fluid Dynamics methods.
Keywords: fluid dynamics; footbridge; Kármán vortex; vortex-induced oscillations
Project no.: GA103/09/0094 (CEP), GAP105/10/2159 (CEP), FR-TI3/654 (CEP)
Funding provider: GA ČR, GA ČR, GA MPO
Host item entry: Engineering Mechanics 2012, ISBN 978-80-86246-39-0

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0213769

Permalink: http://www.nusl.cz/ntk/nusl-135083


The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers