TY - JOUR
T1 - Wind-tunnel study of wake galloping of parallel cables on cable-stayed bridges and its suppression
AU - Li, Yongle
AU - Wu, Mengxue
AU - Chen, Xinzhong
AU - Wang, Tao
AU - Liao, Haili
PY - 2013/3
Y1 - 2013/3
N2 - Flexible stay cables on cable-stayed bridges are three-dimensional. They sag and flex in the complex wind environment, which is a different situation to ideal rigid cylinders in two-dimensional wind flow. Aerodynamic interference and the response characteristics of wake galloping of full-scale parallel cables are potentially different due to three-dimensional flows around cables. This study presents a comprehensive wind tunnel investigation of wake galloping of parallel stay cables using three-dimensional aeroelastic cable models. The wind tunnel study focuses on the large spacing instability range, addressing the effects of cable separation, wind yaw angle, and wind angle of attack on wake galloping response. To investigate the effectiveness of vibration suppression measures, wind tunnel studies on the transversely connected cable systems for two types of connections (flexibility and rigidity) at two positions (mid-span and quarter-span) were also conducted. This experimental study provides useful insights for better understanding the characteristics of wake galloping that will help in establishing a guideline for the wind-resistant design of the cable system on cable-stayed bridges.
AB - Flexible stay cables on cable-stayed bridges are three-dimensional. They sag and flex in the complex wind environment, which is a different situation to ideal rigid cylinders in two-dimensional wind flow. Aerodynamic interference and the response characteristics of wake galloping of full-scale parallel cables are potentially different due to three-dimensional flows around cables. This study presents a comprehensive wind tunnel investigation of wake galloping of parallel stay cables using three-dimensional aeroelastic cable models. The wind tunnel study focuses on the large spacing instability range, addressing the effects of cable separation, wind yaw angle, and wind angle of attack on wake galloping response. To investigate the effectiveness of vibration suppression measures, wind tunnel studies on the transversely connected cable systems for two types of connections (flexibility and rigidity) at two positions (mid-span and quarter-span) were also conducted. This experimental study provides useful insights for better understanding the characteristics of wake galloping that will help in establishing a guideline for the wind-resistant design of the cable system on cable-stayed bridges.
KW - Cable dynamics
KW - Cable-stayed bridge
KW - Parallel cables
KW - Vibration suppressing measures
KW - Wake galloping
KW - Wind tunnel test
UR - http://www.scopus.com/inward/record.url?scp=84875448238&partnerID=8YFLogxK
U2 - 10.12989/was.2013.16.3.249
DO - 10.12989/was.2013.16.3.249
M3 - Article
AN - SCOPUS:84875448238
VL - 16
SP - 249
EP - 261
JO - Wind and Structures, An International Journal
JF - Wind and Structures, An International Journal
SN - 1226-6116
IS - 3
ER -