Pseudo-ductile Failure of Adhesively Joined GFRP Beam-Column Connections: An Experimental and Numerical Investigation

Francesco Ascione, Marco Lamberti, A. Ghani Razaqpur, Saverio Spadea, Mirfet Malagic

Research output: Contribution to journalArticle

14 Citations (Scopus)
142 Downloads (Pure)

Abstract

Glass Fiber Reinforced Polymer (GFRP) I-beam-column adhesively bonded connections are tested under combined bending and shear. The special feature of the novel connection is the wrapping of the seat angles at the connection by a carbon fiber reinforced polymer (CFRP) fabric wrap.

The wrap is primarily intended to alter the connection failure mode from brittle to pseudo-ductile, thus providing adequate warning of impending failure. Four moment resisting connection configurations are tested, including the reference configuration without the wrap. It is observed that the connection failure is initiated by the fracture of the adhesive, but the provision of the wrap, together with a steel seat angle, alters the failure mode from brittle to pseudo-ductile. The post-peak load deformation is achieved without a large drop in the resistance of the connection. On other hand, the connection with the wrapping and a GFRP seat angle can also change the failure mode to pseudo-ductile, but it could not be done without a large reduction in the connection resistance after the peak load.
Original languageEnglish
Pages (from-to)864-873
Number of pages10
JournalComposite Structures
Volume200
Early online date19 May 2018
DOIs
Publication statusPublished - 15 Sep 2018

Keywords

  • Pseudo-ductility
  • Failure
  • Adhesive Connections
  • GFRP
  • Carbon Wrap
  • Mechanical Testing

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