The experimental evaluation of tensile forces in stays of a cable-stayed footbridge

Authors

  • Magdaléna Boháčová Czech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech Republic

DOI:

https://doi.org/10.14311/APP.2023.40.0001

Keywords:

vibration, footbridge, cable-stays, vibration frequency method, tensile force

Abstract

The topic of this paper is an experimental analysis of the dynamic behaviour of stays of an existing footbridge focusing on determination of the tensile forces in stays. The examined structure was the footbridge across the Vltava river in Lužec nad Vltavou. It is a cable-stayed footbridge, the horizontal load-bearing structure consists of UHPC components, which are prestressed by a pair of external cables. The horizontal load-bearing structure is suspended on a 39.85 m high A-shaped steel pylon by means of a system of 17 pairs of stays. As a part of the work the tensile forces in stays were determined using the vibration frequency method. The method is based on the knowledge of natural frequencies of the stays, which were investigated by the experimental analysis.

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Published

2023-07-24

How to Cite

The experimental evaluation of tensile forces in stays of a cable-stayed footbridge. (2023). Acta Polytechnica CTU Proceedings, 40, 1-7. https://doi.org/10.14311/APP.2023.40.0001