Vol. 18, No. 1, pp. 453-464 (2022)
EXPERIMENTAL, NUMERICAL, AND THEORETICAL STUDY ON STATIC
BEHAVIOUR OF NOVEL STEEL DOVETAIL JOINT SUBJECTED TO AXIAL TENSILE LOAD
Waleed Mashrah 1, Zhi-Hua Chen 1, 2, 4, Hong-Bo Liu 3, * and Mohammed Ameen Amer 1
1 Department of Civil Engineering, Tianjin University, Tianjin 300072, China
2 State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
3 Department of Civil Engineering, Hebei University of Engineering, Handan 056000, China
4 Key Laboratory of Coast Civil Structure and Safety of Ministry of Education, Tianjin University, Tianjin 300072, China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 10 February 2021; Revised: 26 May 2021; Accepted: 26 May 2021
DOI:10.18057/IJASC.2022.18.1.4
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ABSTRACT
In this study, two types of socket joints manufactured based on a simple design concept and bearing load principle are proposed. The design concept, design method, test program, and FE modelling method for a novel steel dovetail joint without teeth pattern (Interlock type I) and with teeth pattern (Interlock type II) are also discussed. In addition, the tests and numerical analyses of four specimens were conducted to investigate the bearing capacities and failure modes of the new joint systems under axial tensile loads. The test results indicated that the specimens with and without teeth patterns exhibited different tensile bearing capacities: the specimens with teeth patterns generated twice the tensile load capacity of those without teeth patterns. This result can be attributed to the fact that the interlock type-II specimens rely on the teeth pattern, edges of the hub keyway, and hub ring to bear the load, whereas interlock type-I specimens rely only rely on the edges of the hub keyway and hub rings. Further, the two types of specimens have the same failure modes when the beam-inserted end (tail) is pulled out of the hub keyway. In addition, shear failure occurs on the teeth pattern of the hub keyways and beam-inserted ends of the interlock type-II specimens. Two FE models are established to verify the results of the tests, and the related equations are derived and calculated. The results obtained from the numerical analysis using the equations were compared with the test results. Finally, it was concluded that the results obtained using the three analysis methods adopted in this study agree very well, with high calculation validity and efficiency.
KEYWORDS
New socketed join, Novel steel dovetail joint, H-shaped beam, Tensile bearing capacity, Failure mode
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