Abstract
An experimental study of wind-induced oscillations of groups of bridge stay-cables was conducted in two wind tunnels, one in Japan and one in Canada, to develop a method for suppressing the instability. At first, the parallel cable models were connected rigidly to each other with spacers, forming a coupled cable group whose surface-to-surface separation, or gap, could be varied from 0 to 2 cable diameters. This modification stabilized the wake galloping but it was found that a different form of instability then occurred at higher wind speeds. In this case the group of cables, rather than just the downwind cable, was unstable. With zero gap, the group was most stable, being unstable only near wind angles of 5° and aerodynamically stable otherwise. When the cable group with zero gap was twisted into a shallow helix, it was found to be aerodynamically stable for all wind angles.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Wind Engineering and Industrial Aerodynamics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
