Steel and Composite Structures

  • 제7권4호
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  • Pages.303-320
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  • 2007
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

An evaluation equation of load capacities for CFT square column-to-beam connections with combined diaphragm

  • Choi, Sung-Mo (Department of Architectural Engineering, University of Seoul) ;
  • Jung, Do-Sub (Department of Architectural Engineering, University of Seoul) ;
  • Kim, Dae-Joong (Engineering & Construction Department of Samsung Corporation) ;
  • Kim, Jin-Ho (Research Institute of Indurstrial Science & Technology Steel Structure Research Laboratory)
  • 투고 : 2006.02.14
  • 심사 : 2007.05.14
  • 발행 : 2007.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

The objective of this study is to clarify the structural features of members consisting of connection, as a series of the previous study on the CFT column-to-beam tensile connection with combined cross diaphragm. This connection has the merits that the stress is distributed evenly on the beam flange and the diaphragm and the stress concentration is reduced, by improving the stress transfer route and restraining abrupt deformation of diaphragm. The finite element analysis was performed to find out the stress transfer through sleeve which is an important member of the connection with combined cross diaphragm. The length and thickness of sleeve were used as variables for the analysis. As the analysis results, the length and thickness of sleeve didn't influence on the capacity of the connection and played a role of a medium to transfer the stress from the diaphragm to the filled concrete. It is proposed that the appropriate length of sleeve be the same value as the diameter of sleeve and the appropriate ratio of sleeve diameter to sleeve thickness be 20. Two equations for evaluation of the load-carrying capacity of the connection were also proposed through the modification of the evaluation equation suggested in the previous study.

키워드

참고문헌

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피인용 문헌

  1. Hysteresis behavior of concrete filled square steel tube column-to-beam partially restrained composite connections vol.66, pp.7, 2010, https://doi.org/10.1016/j.jcsr.2010.01.006
  2. Improving fire performance with steel fibers for internally anchored square composite columns vol.103, 2014, https://doi.org/10.1016/j.jcsr.2014.09.003
  3. Structural Capacities of Tension Side for CFT Square Column-To-Beam Connections with Combined-Cross Diaphragm vol.11, pp.2, 2008, https://doi.org/10.1260/136943308784466251
  4. Test of extended thick-walled through-diaphragm connection to thick-walled CFT column vol.20, pp.1, 2016, https://doi.org/10.12989/scs.2016.20.1.001
  5. Nonlinear finite element analysis of CFT-to-bracing connections subjected to axial compressive forces vol.33, pp.5, 2011, https://doi.org/10.1016/j.engstruct.2011.01.018
  6. Tensile strength and concrete cone failure in CFT connection with internal diaphragms vol.17, pp.2, 2017, https://doi.org/10.1007/s13296-017-6021-9
  7. Uni-axial behaviour of normal-strength CFDST columns with external steel rings vol.13, pp.6, 2007, https://doi.org/10.12989/scs.2012.13.6.587
  8. Uni-axial behaviour of normal-strength concrete-filled-steel-tube columns with external confinement vol.3, pp.6, 2012, https://doi.org/10.12989/eas.2012.3.6.889