Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Comprehensive study of the performance of the beam-to-column connection with reduced section and cylindrical web

Document Type : Original Article

Authors
Ehsan Ekhveh 1
Sina Kavei 2
Seyed Rasoul Mirghaderi 3
Mehdi Ghassemieh 3
1 Master of Structural Engineering, Department of Civil Engineering, Tehran University, Tehran,, Iran
2 Master of Structural Engineering, Department of Civil Engineering, Sharif University of Technology, Tehran,, Iran
3 Professor, Department of Civil Engineering, Tehran University, Tehran,, Iran
10.22065/jsce.2024.468455.3469
Abstract
To ensure sufficient ductility and prevent brittle failure in moment-resisting frames, RBS (Reduced Beam Section) connections have become widely used in steel structures. However, a primary drawback of conventional RBS connections is the potential for lateral instability and a significant increase in the structure's lateral deformation. To address this issue, new forms of RBS connections, such as the cylindrical web RBS, have been proposed in recent years and have demonstrated effective performance under various loading conditions in past studies. In this study, an analytical evaluation of the cylindrical web RBS connection under seismic loading is conducted. Initially, the analytical equations pertinent to the structural properties and stability of the beam with the cylindrical web are introduced. Using these equations, a comprehensive design procedure for the cylindrical web RBS connection is formulated. Subsequently, a numerical model of the cylindrical web RBS connection is created and analyzed under cyclic loading using the finite element method. The results from this analysis indicate that the proposed connection meets the criteria set by valid international standards, making it suitable for use in special moment-resisting frames. The findings reveal that the relative displacement due to the use of cylindrical web RBS connections can be decreased compared to the conventional RBS connections.
Keywords
Cylindrical web
Reduced beam section(RBS)
Seismic behavior
Plastic hinge
Finite element method (FEM)

Subjects

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  • Receive Date 27 April 2024
  • Revise Date 28 May 2024
  • Accept Date 23 September 2024