DOI QR코드

DOI QR Code

Experimental study of the behavior of beam-column connections with expanded beam flanges

  • Ma, Hongwei (College of Civil Science and Engineering, Yangzhou University) ;
  • Wang, Jiwei (College of Civil and Transportation Engineering, Hohai University) ;
  • Lui, Eric M. (Department of Civil & Environmental Engineering, Syracuse University) ;
  • Wan, Zeqing (College of Civil Science and Engineering, Yangzhou University) ;
  • Wang, Kun (College of Civil Science and Engineering, Yangzhou University)
  • 투고 : 2018.10.28
  • 심사 : 2019.04.24
  • 발행 : 2019.05.10

초록

This paper describes an experimental study of steel beam-column connections with or without expanded beam flanges with different geometries. The objectives of this study are to elucidate the cyclic behavior of these connections, identify the location of the plastic hinge zone, and provide useful test data for future numerical simulations. Five connection specimens are designed and tested under cyclic load. The test setup consists of a beam and a column connected together by a connection with or without expanded beam flanges. A constant axial force is applied to the column and a time varying point load is applied to the free end of the beam, inducing shear and moment in the connection. Because the only effect to be studied in the present work is the expanded beam flange, the sizes of the beam and column as well as the magnitude of the axial force in the column are kept constant. However, the length, width and shape of the expanded beam flanges are varied. The responses of these connections in terms of their hysteretic behavior, failure modes, stiffness degradation and strain variations are experimentally obtained and discussed. The test results show that while the influence of the expanded beam flanges on hysteretic behavior, stiffness degradation and energy dissipation capacity of the connection is relatively minor, the size of the expanded beam flanges does affect the location of the plastic hinge zone and strain variations in these beam-column joints. Furthermore, in terms of ductility, moment and rotational capacities, all five connections behave well. No weld fracture or premature failure occurs before the formation of a plastic hinge in the beam.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation of China

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피인용 문헌

  1. Analysis on Fracture Behavior and Optimization of Beam-Column Connections with Expanded Flanges of Steel Frames vol.2020, 2019, https://doi.org/10.1155/2020/8845824
  2. Seismic-resistant slim-floor beam-to-column joints: experimental and numerical investigations vol.37, pp.3, 2020, https://doi.org/10.12989/scs.2020.37.3.307