Ambient vibration tests and analyses of a long-span rigid-frame bridge were conducted using distributed long-gauge fiber-optic sensors. The concept of a long-gauge fiber-optic sensor and its merit to reveal local and global structural features are presented. Monitoring of a long-span bridge was performed using long-gauge sensors, and a method to calculate structural deformation distribution from the measured long-gauge strains is proposed, in which shear-deformation effect is considered because the main girder of the studied bridge is deep with a length–depth ratio of 17.9 at the end of the middle span. Modal identification of the studied bridge using the measured long-gauge dynamic strains was also performed, from which strain and displacement mode shapes were identified. Those results demonstrate the superiority of long-gauge fiber-optic sensors and their successful application to the studied bridge.


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    Titel :

    Vibration and Deformation Monitoring of a Long-Span Rigid-Frame Bridge with Distributed Long-Gauge Sensors


    Beteiligte:
    Zhang, Jian (Autor:in) / Tian, Yongding (Autor:in) / Yang, Caiqian (Autor:in) / Wu, Bitao (Autor:in) / Wu, Zhisen (Autor:in) / Wu, Gang (Autor:in) / Zhang, Xin (Autor:in) / Zhou, Liming (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2016-10-31




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt