Wind-tunnel investigations of an inclined stay cable with a helical fillet

Guy L. Larose, Annick D'auteuil, Harold R. Bosch, Jasna B. Jakobsen, John H G Macdonald

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)

Abstract

An experimental study of the effect of adding a helical fillet to the surface of a stay cable in relation to its response to wind-induced excitation was carried out on a 1:1 scale free-to-respond sectional model at the National Research Council Canada. The experiments revealed that a stay cable with a helical fillet inclined at 60° to the flow can experience wind induced vibrations with large amplitudes in smooth or turbulent flow for a low level of structural damping. The oscillations observed appeared to be self-limited in amplitude and could be mitigated with an increase of structural damping. The experiments revealed also that the aerodynamic forces at the source of the vibrations were highly sensitive to a rotation of the cable model about its axis. Measurements of the external diameter of the smooth cable model have shown a maximum eccentricity equivalent to 1% of the mean diameter which appeared to be sufficient to influence the aerodynamics of the cable model, even with the helical fillet in place.

Original languageEnglish
Title of host publication6th European and African Conference on Wind Engineering, EACWE 2013
PublisherInternational Association for Wind Engineering (IAWE)
Publication statusPublished - 2013
Event6th European and African Conference on Wind Engineering, EACWE 2013 - Cambridge, United Kingdom
Duration: 7 Jul 201313 Jul 2013

Conference

Conference6th European and African Conference on Wind Engineering, EACWE 2013
CountryUnited Kingdom
CityCambridge
Period7/07/1313/07/13

Fingerprint Dive into the research topics of 'Wind-tunnel investigations of an inclined stay cable with a helical fillet'. Together they form a unique fingerprint.

Cite this