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Structural performance of CHS X‐joints fabricated from high‐strength steel
Author(s) -
Lee CheolHo,
Kim SeonHu
Publication year - 2018
Publication title -
steel construction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.443
H-Index - 8
eISSN - 1867-0539
pISSN - 1867-0520
DOI - 10.1002/stco.201800021
Subject(s) - ductility (earth science) , materials science , high strength steel , structural engineering , joint (building) , composite material , compression (physics) , compression test , creep , engineering
In Memoriam of Prof. Dr. Bernt Johansson Representative steel design standards have limited the use of high‐strength steels to tubular joints, partly because of concerns about their unique material characteristics. However, the mechanical background behind the limitations is unclear, and its validity needs to be re‐evaluated. In this study, a set of CHS (circular hollow section) X‐joints fabricated from cold‐formed tubes was tested under static axial compression. Then, as supplemental work, extensive test‐validated numerical analyses were carried out to investigate further the behaviour of high‐strength steel CHS X‐joints. In both the testing and the analyses, where three steel grades covering ordinary to very high‐strength steels were considered, the high‐strength steel joints showed satisfactory structural performance comparable with that of ordinary steel joints in terms of strength and ductility.