Examining the effect of threaded bolt fasteners on steel construction

Examining the effect of threaded bolt fasteners on steel construction

This study investigated the effects of threaded bolt fasteners on the initial and final stiffness of bolted joints in special steel modular construction. A comprehensive set of 246 specimens, including 4, 7.6, and 12 mm thick plates with 20 and 30 mm diameter bolts and different end spacings, were t...

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Bibliographic Details
Published in:Scientific reports Vol. 14; no. 1; pp. 16355 - 19
Main Authors: Uz, Mehmet E., Ozkat, Emre, Ersoy, Mehmet C., Salvan, Necdet
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 16-07-2024
Nature Publishing Group
Nature Portfolio
Subjects:
639/166/986
639/301/1023/1026
Building codes
Finite element analysis
Flexibility
Humanities and Social Sciences
Investigations
Laboratories
Laboratory tests
multidisciplinary
Science
Science (multidisciplinary)
Shear out
Shear-bolted connection
Tensile strength
Threaded bolts
Trends
Yield stress
Shear-bolted connection
Shear out
Finite element analysis
Threaded bolts
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Summary:This study investigated the effects of threaded bolt fasteners on the initial and final stiffness of bolted joints in special steel modular construction. A comprehensive set of 246 specimens, including 4, 7.6, and 12 mm thick plates with 20 and 30 mm diameter bolts and different end spacings, were tested. The results revealed that connections with threaded bolts exhibited lower initial stiffness compared to pure shaft connections. This study introduced a novel formula that significantly improved simulation results for bolted joints, surpassing previous modeling approaches. Following the American Society for Testing and Materials (ASTM) definition, the “elastic” stiffness values obtained from the laboratory tests were compared with those of Eurocode provisions. Additionally, ad hoc formulas were proposed for the stiffness of shank, lap connection with partially threaded, and fully threaded bolts. These results offer valuable insights for enhancing the stiffness of bolted shear connections.
Bibliography:ObjectType-Article-1
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content type line 23
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-67428-5