Experimental and Theoretical Research on Welded Aluminum K-Joints †

Šemso Kalač, Martin Mensinger, Christina Radlbeck, Naja Zejnelagić, Đorđe Đuričić, Duško Lučić

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Aluminum alloys provide corrosion resistance, lightweight construction, and functionality through extruded profiles. The creation of heat-affected zones (HAZs), which can reduce load-bearing capacity by up to 50% and complicate K-joint design, makes it difficult to apply aluminum in truss systems. Since EN 1999-1-1 (EC 9) does not even provide guidelines for welded aluminum K-joints, practitioners turn to EN 1993-1-8 (EC 3), resulting in a conservative design that ignores the advantages of aluminum. This study investigated the behavior of welded K-joints in lattice girders made of alloy EN AW 6082 T6. The comparison of the experimental and numerical results showed different load-bearing behaviors depending on dimensions and cross-section types. Further tests were carried out. The aim was to derive an aluminum-specific design procedure.

Original languageEnglish
Article number18
JournalEngineering Proceedings
Issue number1
StatePublished - 2023


  • Eksteoris Var
  • Eurocode
  • HAZ
  • K-joint
  • aluminum alloys
  • experiment
  • lattice girder
  • welded joints


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