Experimental, numerical and parametric studies on stress concentration factors of T-joints under tension. Issue 2 (January 2022)

• Record Type: Journal Article
• Authors: Matti, Feleb; Mashiri, Fidelis
• Is Part Of: Advances in structural engineering. Volume 25:Issue 2(2022)
• Page Start: 392
• Page End: 409
• Publication Date: 2022-01
• Subjects: square hollow section -- stress concentration factor -- tension load -- concrete-filled T-joints -- static tests; Structural engineering -- Periodicals; Construction, Technique de la; Structural engineering; Periodicals; 624.1
• DOI: 10.1177/13694332211049994
• Languages: English
• ISSNs: 1369-4332

Abstract

This paper investigates the behaviour of square hollow section (SHS) T-joints under static axial tension for the determination of stress concentration factors (SCFs) at the hot spot locations. Five empty and corresponding concrete-filled SHS-SHS T-joint connections were tested experimentally and numerically. The experimental investigation was carried out by attaching strain gauges onto the SHS-SHS T-joint specimens. The numerical study was then conducted by developing three-dimensional finite element (FE) T-joint models using ABAQUS finite element analysis software for capturing the distribution of the SCFs at the hot spot locations. The results showed that there is a good agreement between the experimental and numerical SCFs. A series of formulae for the prediction of SCF in concrete-filled SHS T-joints under tension were proposed, and good agreement was achieved between the maximum SCFs in SHS T-joints calculated from FE T-joint models and those from the predicted formulae.