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.
|State||Published - 2009|
|Event||11th Americas Conference on Wind Engineering - San Juan, Puerto Rico|
Duration: Jun 22 2009 → Jun 26 2009
|Conference||11th Americas Conference on Wind Engineering|
|Period||06/22/09 → 06/26/09|