Author
Macchietto, Carl; Mark Taylor; and Kellie Koedel
Benefit Summary HTML

Mast arm structures, including cantilevered signal supports, are often susceptible to fatigue cracking from the numerous oscillations caused by both normal and extreme winds. Vibration mitigation devices provide an alternative for Departments of Transportation (DOTs) and agencies to consider in lieu of larger poles, more steel, larger foundations, or other previous remedial measures. Such devices act to reduce wind induced vibration oscillations, keeping structure size and costs manageable and adhering to the minimum AASHTO fatigue design recommendations. The vertical metal tubes mount directly onto the end of the mast and utilize both eddy-current damping and pneumatic damping to effectively damper even high-amplitude mast arm movement.

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No
Last Modified Date
Other Reference Number
Vol. 88, No. 12
Priority Research Area
Publication Sort Date
Publisher
ITE Journal
Result Type
Source ID
1957
Title
Effective Mitigation of Wind Induced Vibration of Traffic Signal Structures and the AASHTO Specification
UNID
BF1936AF2CC7D7E18525839400647EBA
Source Review
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