Reducing Fatigue in Wind-Excited Traffic Signal Support Structures using Smart Damping Techniques

This project will develop and demonstrate the use of a vibration absorbing system based on magnetorheological fluid dampers to reduce fatigue in traffic signal support structures exposed to excessive wind-induced vibration. Work in the first stage will focus on designing and building a prototype smart vibration absorber system for traffic signal support structures. A full-scale traffic signal support structure will be set up in the laboratory. The mast arm and pole of the support structure will be anchored to the laboratory floor and instrumented with sensors. The experimental setup of the structure will be used to conduct free and forced vibration tests for system identification. Using the model obtained from system identification, an appropriately- sized smart vibration absorber prototype and the associated coupling bracket will be designed for installation onto the support structure. Work in the second stage will involve experimental validation of the automated performance of the smart vibration absorber system in reducing vibration and fatigue of the structure. The prototype performance will be evaluated by experimentally measuring the increased level of damping in the structure from free vibration response and measured steady state accelerations from forced vibration tests. Various control strategies will be examined. The final report will provide guidelines and specifications for the smart vibration dampers for use in wind-exposed traffic signal structures.


  • English


  • Status: Completed
  • Contract Numbers:

    Project 20-30, IDEA

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Jawed, Inam

  • Start Date: 20090423
  • Expected Completion Date: 0
  • Actual Completion Date: 0
  • Source Data: RiP Project 22103

Subject/Index Terms

Filing Info

  • Accession Number: 01547244
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 20-30, IDEA
  • Files: TRB, RiP
  • Created Date: Dec 4 2014 1:00AM