Load-carrying capacity of welded K-type joints inside floor truss systems

Pooya Saremi, Wei Lu, Jari Puttonen, Dan Pada, Jyrki Kesti

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The load-carrying capacity of a K-type joint inside a floor truss is studied both experimentally and numerically. The joint tested is a scaled-down, isolated joint. The tubular braces, plate chord, and division plate are made of SSAB Domex steel. Comparison of load displacement curves received by finite element analyses with curves obtained from tests confirms that numerical models describe joint behaviour reasonable. The paper demonstrates that joints with high load-bearing capacity can be investigated experimentally by scaling the dimensions of the joint down when testing devices can affect the required capacity of the joint. The results presented can also be used for optimizing failure mechanism of similar joints in practice.
Original languageEnglish
Pages (from-to)38-52
Number of pages15
JournalRakenteiden Mekaniikka - Journal of Structural Mechanics
Issue number1
Publication statusPublished - 2019
MoE publication typeA1 Journal article-refereed


  • welded K-type tube-to-plate joint
  • long-span steel truss
  • high strength steel
  • sustainable steel building


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