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
CountryPuerto Rico
CitySan Juan

Fingerprint Dive into the research topics of 'Field observations of traffic signal structure vibration'. Together they form a unique fingerprint.

Cite this