Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis and Mitigation of Vibration of Steel Footbridge with Excessive Amplitudes
The article analyses the dynamics response of a footbridge crossing the Morava River between Slovak and Austrian border. After the construction, the bridge with very flexible construction showed excessive acceleration amplitudes in both vertical and horizontal direction when excited by usual pedestrians. Main footbridge part of 180 m length across waterway is a three span suspended steel structure. The longest middle span of 120 m length is hanged by four prestressed tendons over pylons, which are the part of prestressed lateral portals. Footbridge deck is made using triangular lattice girder with the top orthotropic plate. The bridge has a vertically curved shape. The adverse vibration has been successfully suppressed by multiple tuned dampers with the adjustable friction elements installed beneath the bridge deck. The experimental modal analysis comprising both forced vibration as well as ambient vibration from wind was carried out before and after the installation of vibration absorbers. The results of experimental tests were confronted with the outputs of numerical analysis.
Analysis and Mitigation of Vibration of Steel Footbridge with Excessive Amplitudes
The article analyses the dynamics response of a footbridge crossing the Morava River between Slovak and Austrian border. After the construction, the bridge with very flexible construction showed excessive acceleration amplitudes in both vertical and horizontal direction when excited by usual pedestrians. Main footbridge part of 180 m length across waterway is a three span suspended steel structure. The longest middle span of 120 m length is hanged by four prestressed tendons over pylons, which are the part of prestressed lateral portals. Footbridge deck is made using triangular lattice girder with the top orthotropic plate. The bridge has a vertically curved shape. The adverse vibration has been successfully suppressed by multiple tuned dampers with the adjustable friction elements installed beneath the bridge deck. The experimental modal analysis comprising both forced vibration as well as ambient vibration from wind was carried out before and after the installation of vibration absorbers. The results of experimental tests were confronted with the outputs of numerical analysis.
Analysis and Mitigation of Vibration of Steel Footbridge with Excessive Amplitudes
Conf.Proceedings of Society
Cunha, Alvaro (Herausgeber:in) / Pospíšil, S. (Autor:in) / Hračov, S. (Autor:in) / Urushadze, S. (Autor:in) / Jermoljev, D. (Autor:in)
20.03.2013
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Analysis and Mitigation of Vibration of Steel Footbridge with Excessive Amplitudes
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