Active Control of Suspension Bridges

Palle Thoft-Christensen

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    Abstract

    In this paper some recent research on active control of very long suspension bridges, is presented. The presentation is based on research work at Aalborg University, Denmark. The active control system is based on movable flaps attached to the bridge girder. Wind load on bridges with or without flaps attached to the girder is briefly presented. A simple active control system is discussed. Results from wind tunnel experiments with a bridge section show that flaps can be used effectively to control bridge girder vibrations. Flutter conditions for suspension bridges with and without flaps are presented. The theory is illustrated by an example.
    Original languageEnglish
    Place of PublicationAalborg
    PublisherDept. of Building Technology and Structural Engineering
    Number of pages11
    Publication statusPublished - 2000
    SeriesStructural Reliability Theory
    Number197
    VolumeR0018
    ISSN1395-7953

    Bibliographical note

    Presented at the Second European Congress on Structural Control, Champ sur Marne, France, July 3-7, 2000

    PDF for print: 20 pp.

    Keywords

    • Suspension Bridge
    • Suspension Bridge Vibrations
    • Movable Flaps
    • Wind Loads
    • Bridge Girder
    • Flutter
    • Active Control
    • Wind Tunnel Testing
    • Bridge Flaps
    • Aeroelastic Forces

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