Evaluation of aerodynamic damping in full-scale rain-wind-induced stay cable vibration

Jieying Hua, Delong Zuo

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Rain-wind-induced vibration of stay cables has been a long-standing problem for cable-stayed bridges. Despite the numerous full-scale and laboratory studies conducted to understand this phenomenon, a consensus on the excitation mechanism that causes the vibration has not been reached. As a result, although many types of formulation have been used to develop models for rain-wind-induced vibration, the capability of these models to effectively predict full-scale vibrations has not been definitively validated. Motivated by the qualitative similarities between the rain-wind-induced vibration and vortex-induced vibration observed in the field, this study proposes to model rain-wind-induced vibration as a Van der Pol oscillator in a manner similar to that used in the modeling of vortex-induced vibration by some previous studies. The model is used as a basis to evaluate the aerodynamic damping resulting from the interaction between the vibration of full-scale stay cables and wind as well as rain, which is the fundamental mechanism that causes large-amplitude vibrations. The dependence of the generalized coefficients representing the linear and nonlinear components of the aerodynamic damping on the characteristics of both the vibration and the wind is interpreted.

Original languageEnglish
Pages (from-to)215-226
Number of pages12
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume191
DOIs
StatePublished - Aug 2019

Keywords

  • Full-scale measurement
  • Nonlinear aerodynamic damping
  • Rain-wind-induced vibration
  • Stay cable

Fingerprint Dive into the research topics of 'Evaluation of aerodynamic damping in full-scale rain-wind-induced stay cable vibration'. Together they form a unique fingerprint.

Cite this