Vol. 18, No. 1, pp. 495-505 (2022)
NUMERICAL STUDY OF TWO NOVEL CONNECTIONS WITH
SHORT END I OR H STUB IN STEEL STRUCTURES
Mehrdad Taheripour 1, Farzad Hatami 1, 2 , * and Reza Raoufi 1
1 Department of Civil Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2 Department of Structures and Earthquake Research Center, Amirkabir University of Technology, Tehran, Iran
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 17 December 2020; Revised: 16 June 2021; Accepted: 4 July 2021
DOI:10.18057/IJASC.2022.18.1.8
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ABSTRACT
In this study, two novel steel connections are introduced by replacements in the conventional end-plate connection with an H-or I-shaped cross-section as a Short Stub Column (SSC). In the first connection, the SSC flange is bolted to the column flange, and the beam is welded to the stub flange. In the second connection, after welding the SSC flange to the column flange and welding the beam to an end-plate, the end-plate is bolted to the SSC flange. The flange and web of the stub are reinforced using horizontal stiffeners to transfer the beam moment. Stiffeners could be employed with various thicknesses and configurations such that the strength and ductility of the joint could be adjusted. In this study, the Finite Element Model (FEM) model of a conventional welded and bolted end-plate connection, subjected to cyclic loading, is primarily calibrated using experimental data from previous studies. After confirming the model's performance, the behavior of the two proposed connections, in comparison with it, has been studied. The hysteresis diagrams have been obtained for each case, followed by extracting the effective parameters and comparing them. The results show that the two Proposed Connections reduce the stress in the panel zone and increase the ductility compared to the previously confirmed end-plates. All the samples in this study satisfy the fundamental requirements for rigid beam-to-column connections, according to AISC.
KEYWORDS
Bolted end-plate connection, Stub steel connections, Panel zone, Hysteresis diagrams, PEEQ
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