TY - JOUR
T1 - Evaluation of aerodynamic damping in full-scale rain-wind-induced stay cable vibration
AU - Hua, Jieying
AU - Zuo, Delong
N1 - Funding Information:
This study was partially sponsored by the National Science Foundation of the United States through award number 0900643. Any opinions, findings, conclusions or recommendations expressed in this study are those of the authors and do not necessarily reflect the views of the National Science Foundation.
Funding Information:
This study was partially sponsored by the National Science Foundation of the United States through award number 0900643 . Any opinions, findings, conclusions or recommendations expressed in this study are those of the authors and do not necessarily reflect the views of the National Science Foundation .
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/8
Y1 - 2019/8
N2 - 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.
AB - 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.
KW - Full-scale measurement
KW - Nonlinear aerodynamic damping
KW - Rain-wind-induced vibration
KW - Stay cable
UR - http://www.scopus.com/inward/record.url?scp=85067812035&partnerID=8YFLogxK
U2 - 10.1016/j.jweia.2019.06.008
DO - 10.1016/j.jweia.2019.06.008
M3 - Article
AN - SCOPUS:85067812035
VL - 191
SP - 215
EP - 226
JO - Journal of Wind Engineering and Industrial Aerodynamics
JF - Journal of Wind Engineering and Industrial Aerodynamics
SN - 0167-6105
ER -