Reducing Fatigue in Wind-Excited Traffic Signal Support Structures using Smart Damping Technologies
This Innovations Deserving Exploratory Analysis (IDEA) project developed and tested an innovative signal head vibration absorber (SHVA) that provides energy absorption for lightly damped signal support structures to reduce vibration and fatigue in these structures from excessive wind-induced vibration. The SHVA is a modified vehicle signal head that incorporates a reliable and robust spring and damper inside of the signal housing to allow for the signal head to move vertically relative to the mast arm. As the mass of the signal head moves up and down relative to the mast-arm, energy is dissipated and vibration is greatly reduced.
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Supplemental Notes:
- This NCHRP-IDEA investigation was conducted by the University of Connecticut, Storrs. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Christenson, Richard
- Publication Date: 2011-1
Language
- English
Media Info
- Media Type: Print
- Edition: Final Report
- Features: Figures; Photos; References; Tables;
- Pagination: 30p
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Serial:
- NCHRP-IDEA Program Project Final Report
- Publisher: Transportation Research Board
Subject/Index Terms
- TRT Terms: Damping (Physics); Energy absorption; Fatigue (Mechanics); Signal head; Structural supports; Technological innovations; Traffic signal hardware; Vibration; Wind
- Identifier Terms: Innovations Deserving Exploratory Analysis (IDEA) (Program)
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
Filing Info
- Accession Number: 01351451
- Record Type: Publication
- Report/Paper Numbers: NCHRP IDEA Project 141
- Files: TRIS, TRB
- Created Date: Sep 12 2011 1:51PM