Steel and Composite Structures

  • 제21권1호
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  • Pages.73-91
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  • 2016
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Finite element study the seismic behavior of connection to replace the continuity plates in (NFT/CFT) steel columns

  • Rezaifar, Omid (Department of Civil Engineering and Research Institute of Novin Technologies, Semnan University) ;
  • Younesi, Adel (Structure Engineering, Faculty of Civil Engineering, Semnan University)
  • 투고 : 2015.08.20
  • 심사 : 2016.02.29
  • 발행 : 2016.05.20
⟨ 이전 논문 다음 논문 ⟩

초록

The use of box columns has been increased due to the rigidity in rigid orthogonal moment resisting frames. On the other hand, the installation and welding of necessary horizontal continuity plates inside the columns are both labor-consuming and costly tasks. Accordingly, in this paper, a new beam-to-box column connection by trapezoidal external stiffeners and horizontal bar mats is presented to provide seismic parameters. The proposed connection consists of eight external stiffeners in the level of beam flanges and five horizontal bar mats in Concrete Filled Tube (CFT) columns. The new connection effectively alleviates the stress concentration and moves the plastic hinge away from the column face by horizontal external stiffeners. In addition, the result shows that proposed connection has provided the required strength and rigidity of connection, so that the increased strength, 8.08% and rigidity, 3.01% are compared to connection with internal continuity plates, also the results indicate that this connection can offer appropriate ductility and energy dissipation capacity for its potential application in moment resisting frames in seismic region. As a result, the proposed connection can be a good alternative for connection with continuity plates.

키워드

참고문헌

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피인용 문헌

  1. Experimental study discussion of the seismic behavior on new types of internal/external stiffeners in rigid beam-to-CFST/HSS column connections vol.136, 2017, https://doi.org/10.1016/j.conbuildmat.2017.01.032
  2. Experimental and Numerical Investigation of Concrete-Filled Double-Skin Steel Tubular Column for Steel Beam Joints vol.2018, pp.1687-8442, 2018, https://doi.org/10.1155/2018/6514025
  3. Experimental seismic behaviour of L-CFST column to H-beam connections vol.26, pp.6, 2018, https://doi.org/10.12989/scs.2018.26.6.793
  4. Cyclic performance and design recommendations of a novel weak-axis reduced beam section connection vol.27, pp.3, 2018, https://doi.org/10.12989/scs.2018.27.3.337