Dynamic assessment of shear connection conditions in slab-girder bridges by Kullback-Leibler distance

X. Q. Zhu, H. Hao, B. Uy, Yong Xia, O. Mirza

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


Shear connectors are widely used in composite bridges that provide composite action. Their damage will reduce the load-carrying capacity of the structure. In this study, a novel method based on Kullback-Leibler distance (KLD) was developed to assess the integrity of the shear connectors. A bridge model was constructed in the laboratory and some removable anchors were specially designed and fabricated to link the beams and slab that were cast separately. Each anchor consists of a threaded bar that penetrates through the soffit of the beam and ties up into an embedded nut cap to simulate a shear connector in the real bridges. Different damage scenarios were introduced by pulling out some connectors. Vibration tests were carried out in each damage scenario. Various damage detection methods have been applied and results show that the method was able to detect all the assumed damage scenarios successfully and consistently.
Original languageEnglish
Pages (from-to)771-780
Number of pages10
JournalAdvances in Structural Engineering
Issue number5
Publication statusPublished - 1 May 2012


  • connection model
  • damage detection
  • Kullback-Leibler measure
  • slab-girder bridges
  • vibration

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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