Response of reciprocally supported advanced FRP composite jointed frames - Part 1: Experimental study

Echekwumemchukwu Emmanuel Badifu, Alfred Gand, Messaoud Saidani, Pam Fom

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This paper reports on a new experimental study for the behaviour of reciprocally connected and supported Fibre Reinforced Polymer (FRP) hollow square profiles axially loaded under several boundary conditions. The study aims to determine the ultimate load of the assembly and failure mechanism of mutually connected units. For the tests, FRP reciprocal frames units (RF) of 100 × 100 × 6.4 mm thick square hollow sections were designed, fabricated and assembled using
mechanical fasteners. A bespoke steel test rig allowed for varied support boundary conditions. The observed failure modes were dominated by web buckling, bearing failure around the bolted areas and localised failure. The 100 × 100 mm RF unit achieved the highest load capacity of 16.4 kN and frame stiffness of 1.7 kN/mm, under the pin-pin-roller support boundary conditions. This paper presents the experimental procedure, results and observations.
Original languageEnglish
Pages (from-to)187-198
Number of pages12
JournalEngineering Solid Mechanics
Early online date27 Jan 2020
Publication statusPublished - 2020

Bibliographical note

© 2020 by the authors; licensee Growing Science, Canada. This is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license


  • Pultrusion
  • GFRP
  • Reciprocal frames
  • Mutually supported elements
  • Ductility
  • Failure modes


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