Field observations of traffic signal structure vibration

Delong Zuo, Chris W. Letchford

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations


Cantilever-armed traffic-signal-supporting structures are known to be prone to vibrate with significant amplitude under wind excitation. The nature of the vibration has previously been postulated to be galloping. A recent study has also suggested that the vibration might be due to vortex-shedding from certain elements of this type of structure. To further clarify the excitation mechanisms, a measurement system was installed on a full-scale traffic-signal-supporting structure. It was revealed that the large-amplitude vibrations were due to the interaction between wind and the tapered circular cantilever arm of the structure.

Original languageEnglish
StatePublished - 2009
Event11th Americas Conference on Wind Engineering - San Juan, Puerto Rico
Duration: Jun 22 2009Jun 26 2009


Conference11th Americas Conference on Wind Engineering
Country/TerritoryPuerto Rico
CitySan Juan


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