Flutter and galloping of cable-supported bridges with porous wind barriers

0480892 - ÚTAM 2018 RIV NL eng J - Journal Article
Buljac, A. - Kozmar, H. - Pospíšil, Stanislav - Macháček, Michael
Flutter and galloping of cable-supported bridges with porous wind barriers.
Journal of Wind Engineering and Industrial Aerodynamics. Roč. 171, December (2017), s. 304-318. ISSN 0167-6105. E-ISSN 1872-8197
R&D Projects: GA ČR(CZ) GA15-01035S; GA MŠMT(CZ) LO1219
Keywords : cable-supported bridges * porous wind barriers * aerodynamic forces and moments * flutter * galloping * wind-tunnel experiments
OECD category: Construction engineering, Municipal and structural engineering
Impact factor: 2.689, year: 2017
http://www.sciencedirect.com/science/article/pii/S016761051730435X

Wind-tunnel experiments are carried out to analyze the influence of wind-barrier porosity and height on aerodynamic and aeroelastic characteristics of wide long-span cable-supported bridges. The experiments are carried out on sectional models of the Golden Gate Bridge (USA), Kao-Pin Hsi Bridge (Taiwan), and Great Belt Bridge (Denmark). The bridge-deck section models are equipped with the wind-barrier models at the windward (leading) edge of the studied sections. The experimental results indicate that the effects of wind barriers on galloping sensitivity of studied bridge decks are rather negligible, while bridge decks become quite prone to flutter for wind barriers placed at their windward edge. These trends are more exhibited for more-solid wind barriers. The effects of increasing wind-barrier height are not unambiguous, as they are simultaneously influenced by the aerodynamic shape of bridge decks as well.
Permanent Link: http://hdl.handle.net/11104/0276558