Pull‐out strength of perforated steel plates with oval‐shaped perforation

The use of Perfobond Leisten (PBL) shear connectors in building structures has attracted increasing interest. A new approach for using perforated steel plates concrete-filled tube (CFST) column splices was implemented this study. shape the perforation opening is generally a circle, similar to that PBL connectors. However, study, an oval-shaped used increase double area concrete. pull-out experiment conducted on with perforations CFST block evaluate tensile performance plates. total 29 specimens were tested, and strengths determined analyzed under passive confinement from tube. contribution stress transfer discussed terms concrete bond and/or friction between surface plate Formulas determining maximum strength also developed.