Flutter derivatives of the Kao-Pin Hsi cable-supported bridge

0453617 - ÚTAM 2016 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Buljac, A. - Pospíšil, Stanislav - Kozmar, H. - Kuznetsov, Sergeii - Král, Radomil
Flutter derivatives of the Kao-Pin Hsi cable-supported bridge.
Applied Mechanics and Materials. Vol. 821. Zürich: Trans Tech Publications Inc, 2016 - (Fischer, C.), s. 172-179. Engineering Mechanics, 821. ISBN 978-3-03835-700-1. ISSN 1660-9336.
[Engineering mechanics 2015 /21./. Svratka (CZ), 11.05.2015-14.05.2015]
Grant CEP: GA ČR(CZ) GA15-01035S; GA MŠMT(CZ) LO1219
Institucionální podpora: RVO:68378297
Klíčová slova: bridge-deck section * vibrations * aeroelasticity * flutter derivatives * wind-tunnel experiments
Kód oboru RIV: JM - Inženýrské stavitelství

Long-span cable-supported bridges, characterized with low natural frequencies and
mechanical damping, are very sensitive to wind effects. Therefore, investigation of the aeroelastic
behaviour of bridges is particularly important when designing these complex engineering structures.
The focus is on evaluation of dimensionless aeroelastic coefficients, i.e. flutter derivatives, which
are considered as indicators of the aeroelastic stability of bridges. A comprehensive experimental
study on dynamic wind-induced behaviour of the Kao-Pin Hsi Bridge in Taiwan is carried out in the
Climatic Wind Tunnel of the Centre of Excellence Telč (CET), Czech Republic. The bridge-deck
section is tested at a multipurpose experimental setup originally developed in the CET. Flutter
derivatives are obtained by the means of the free-vibration technique for the double-degree-offreedom
(DDOF) system. The results are compared to those of a thin flat plate with large width to
height ratio, which previously proved to be stable with respect to the flutter phenomenon. While the
torsional instability is observed for the Kao-Pin Hsi bridge-deck section, the flat plate proves to be
aeroelastically stable.
Trvalý link: http://hdl.handle.net/11104/0254379