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    Damage detection of shear connectors in bridge structures with transmissibility in frequency domain

    225789_225789.pdf (1.318Mb)
    Access Status
    Open access
    Authors
    Li, Jun
    Hao, Hong
    Xia, Y.
    Zhu, P.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Li, J. and Hao, H. and Xia, Y. and Zhu, P. 2014. Damage detection of shear connectors in bridge structures with transmissibility in frequency domain. International Journal of Structural Stability and Dynamics. 14 (2): pp. 1350061-1-1350061-33.
    Source Title
    International Journal of Structural Stability and Dynamics
    DOI
    10.1142/S0219455413500612
    ISSN
    0219-4554
    Remarks

    Electronic version of an article published as International Journal of Structural Stability and Dynamics, 14, 2, Year, 1350061-1-1350061-33. http://doi.org/10.1142/S0219455413500612© copyright World Scientific Publishing Company http://www.worldscientific.com/doi/abs/10.1142/S0219455413500612

    URI
    http://hdl.handle.net/20.500.11937/21550
    Collection
    • Curtin Research Publications
    Abstract

    Shear connectors are generally used to link the slab and girder together in slab-on-girder bridge structures. Damage of shear connectors in such structures will result in shear slippage between the slab and girder, which significantly reduces the load-carrying capacity of bridges. A damage detection approach based on transmissibility in frequency domain is proposed in this paper to identify the damage of shear connectors in slab-on-girder bridge structures with or without reference data from the undamaged structure. The transmissibility, which is an inherent system characteristic, indicates the relationship between two sets of response vectors in frequency domain. Measured input force and acceleration responses from hammer tests are analyzed to obtain the frequency response functions at the slab and girder sensor locations by the experimental modal analysis. The transmissibility matrix that relates the slab response to the girder response is then derived. By comparing the transmissibility vectors in undamaged and damaged states, the damage level of shear connectors can be identified. When the measurement data from the undamaged structure are not available, a study with only the measured response data in the damaged state for the condition assessment of shear connectors is also conducted. Numerical and experimental studies on damage detection of shear connectors linking a concrete slab to two steel girders are conducted to validate the accuracy and efficiency of the proposed approach. The results demonstrate that the proposed method can be used to identify shear connector damages accurately and efficiently. The proposed method is also applied to the condition evaluation of shear connectors in a real composite bridge with in-field testing data.

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    • Damage assessment of shear connectors with vibration measurements and power spectral density transmissibility
      Li, Jun; Hao, Hong; Xia, Y.; Zhu, H. (2015)
      Shear connectors are generally used to link the slab and girders together in slab-on-girder bridge structures. Damage of shear connectors in such structures will result in shear slippage between the slab and girders, which ...
    • Damage detection of shear connectors based on power spectral density transmissibility
      Li, Jun; Hao, Hong (2013)
      Damage of shear connectors in slab-on-girder structures will result in shear slippage between slab and girder, which significantly reduces the load-carrying capacity of the bridge. This paper proposes a dynamic damage ...
    • Dynamic condition assessment of shear connectors in composite bridges with acceleration measurements: A field study
      Li, Jun; Hao, H. (2015)
      Shear connectors are generally used to link the slab and girders together in slab-on-girder bridge structures. Damage of shear connectors in such structures will result in shear slippage between the slab and girders, which ...
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