Numerical Investigation of Seismic Behavior of Beam-to-Column Connection in Rapid-Construction Steel Structures with Adjustable and Reinstallable Capability

Document Type : Original Research

Author
S. khalilpour
-
10.22034/22.6.21
Abstract
The importance of some factors, including providing temporary and permanent habitation, construction speed, increasing the material strength and decreasing the construction cost, have made the attention to choice of vertical and lateral load-bearing systems as one of the necessities of the construction industry in the event of natural disasters such as floods and earthquakes. The need for any building in any area depends on a variety of conditions that may arise at one time and disappear at another. In this study, for the first time in Iran, firstly, a rapid-fabricated steel structure with both temporary and permanent habitation ability, and the capability of moving, assembling and disassembling is introduced, and then the seismic behavior of it’s beam-to-column connection is evaluated for using in ordinary steel moment frames. In order to evaluate the three characteristics of stiffness, strength and ductility of the proposed connection, nonlinear analysis is done using ABAQUS/6.14.2 software, and the evaluation of the seismic behavior of the connection is conducted in accordance with the criterias of chapter B of ANSI/AISC 360-16. According to the results, section properties and length of the beam, end-plate thickness, location and diameter of the bolts, and the location of the stiffeners on the end-plate are the effective parameters on the stiffness and strength of the proposed connection. Among all parameters, end-plate thickness and diameter of the bolts are two important factors that mostly affect the stiffness of the connection. Investigations show that the proposed connection, by having the sufficient stiffness and strength, is able to withstand the entire plastic moment capacity of the beam. Also, the plastic hinge is occurred outside of the connection region and the final failure mode of the system is the plastic local buckling of the compression flange of the beam. The mentioned abilities make it possible to use the proposed beam-to-column connection in ordinary moment frames as a fully restrained and fully strength connection.

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Modares Civil Engineering journal
Volume 22, Issue 6
November and December 2022
Pages 21-33