Stability of Extended Shear Tab Connections Under Combined Loading

  • Author / Creator
    Buffam, Victoria
  • Extended shear tab connections are efficient for both fabrication and erection where a beam would otherwise need to be coped to clear the flanges of the supporting member, and are therefore used extensively in industry. Stability issues can arise as the plate becomes longer and more slender, as may be required in skewed connections or other complex geometries. Therefore, this research aims to determine when stability of the extended shear tab governs the behaviour and capacity of the connection as opposed to strength, considering the interaction of shear, axial and bending stresses. A parametric study using finite element simulations was conducted in which the length of the extended shear tab was increased until instability of the plate became the governing failure mode. A full-scale experimental testing program was also completed to further validate the results of the numerical analysis. The study investigated the effect of plate depth, plate thickness and level of applied axial compression. The shear capacity of the connection is discussed and a design procedure for the critical length is proposed. The recommendation includes the effect of varying levels of axial load and initial imperfections.

  • Subjects / Keywords
  • Graduation date
    Spring 2018
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
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