Wind effects on a footbridge

0571107 - ÚTAM 2024 SK eng J - Journal Article
Pirner, Miroš - Pospíšil, Stanislav - Urushadze, Shota
Wind effects on a footbridge.
Building Research Journal. Roč. 46, č. 1 (1998), s. 3-21. ISSN 1335-8863
Institutional support: RVO:68378297
Keywords : prestressed concrete footbridge * dynamic wind effects * vortex separation * torsional response * torsionally - flexural flutter
OECD category: Civil engineering
Method of publishing: Limited access

This article describes an experiment with an aeroelastic model of a R.C. prestressed footbridge. The real structure has been designed by OBEC Consulting Engineers, Eugene, Oregon with collaboration of Jifi Strasky, Consulting Engineer, Mill Valley, California. The main aim of experiments was determination of the aerodynamic stability with regards to torsional- bending flutter. Another goal of the experiment on aeroelastic footbridge model was to determine critical vortex separation wind speed under various wind attack angle. Also, influence of lower prestressing has been observed. In this article natural modes and frequencies are presented and compared with theoretical values. The surveyed bridge has been found to be aerodynamically stable. The vertical response is under allowable limits.
Permanent Link: https://hdl.handle.net/11104/0342409