Multipurpose experimental rig for aeroelastic tests of bridge girders and slender beams

0364240 - ÚTAM 2012 RIV CZ eng C - Conference Paper (international conference)
Pospíšil, Stanislav - Král, Radomil - Náprstek, Jiří
Multipurpose experimental rig for aeroelastic tests of bridge girders and slender beams.
Engineering Mechanics 2011. Prague: Institute of Thermomechanics AS CR, v. v. i., 2011 - (Fuis, V.), s. 483-486. ISBN 978-80-87012-33-8.
[Engineering Mechanics 2011 /17./. Svratka (CZ), 09.05.2011-12.05.2011]
R&D Projects: GA ČR(CZ) GA103/09/0094; GA AV ČR(CZ) IAA200710902
Institutional research plan: CEZ:AV0Z20710524
Keywords : bridge aero-elasticity * wind tunnel * experimental set-up * non-linear response
Subject RIV: JM - Building Engineering

The bridges, footbridges and broadcast towers create an important subset of infrastructure subjected to dynamic loading of various origins. Especially, exposed to wind, they are susceptible to vibrations under certain circumstances due to pure load action or aero-elastic effects. This means that once an element or a structure starts to vibrate, a complex interaction between the moving boundary and the airflow takes place. Because of the complexity, the research has been in progress for several decades in both theoretical and experimental way. The article describes an original and multi-purpose experimental frame for the analysis of complex linear and non-linear aspects of aero-elastic behavior of the slender beams. The apparatus meets the rigorous theoretical assumptions and allows very precise and quick adjustment of the stiffness and mass of the structure, which is not always possible with a traditional "parallel spring-supported bridge" approach used by many researchers.
Permanent Link: http://hdl.handle.net/11104/0199771