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Rain-wind induced vibrations of cables in laminar and turbulent flow

  • Peil, U. (Institute for Steel Structures, Technical University) ;
  • Dreyer, O. (Institute for Steel Structures, Technical University)
  • Received : 2006.04.03
  • Accepted : 2006.12.07
  • Published : 2007.02.25

Abstract

In the last decades there have been frequent reports of oscillations of slender tension members under simultaneous action of rain and wind - characterized by large amplitudes and low frequencies. The members, e.g. cables of cable-stayed bridges, slightly inclined hangers of arch bridges or cables of guyed-masts, show a circular cross section and low damping. These rain-wind induced vibrations negatively affect the serviceability and the lifespan of the structures. The present article gives a short literature review, describes a mathematical approach for the simulation of rain-wind induced vibrations, sums up some examples to verify the calculated results and discusses measures to suppress the vibrations.

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