Steel and Composite Structures

  • 제19권5호
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  • Pages.1299-1319
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  • 2015
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Parametric study on eccentrically-loaded partially encased composite columns under major axis bending

  • Begum, Mahbuba (Department of Civil Engineering, BUET) ;
  • Driver, Robert G. (Department of Civil and Environmental Engineering, University of Alberta) ;
  • Elwi, Alaa E. (Department of Civil and Environmental Engineering, University of Alberta)
  • 투고 : 2014.01.08
  • 심사 : 2015.05.20
  • 발행 : 2015.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a detailed parametric study, conducted using finite element tools to cover a range of several geometric and material parameters, on the behaviour of thin-walled partially encased composite (PEC) columns. The PEC columns studied herein are composed of thin-walled built-up H-shaped steel sections with concrete infill cast between the flanges. Transverse links are provided between the opposing flanges to improve resistance to local buckling. The parametric study is confined to eccentrically-loaded columns subjected to major axis bending only. The parameters that were varied include the overall column slenderness ratio (L/d), load eccentricity ratio (e/d), link spacing-to-depth ratio (s/d), flange plate slenderness ratio (b/t) and concrete compressive strength ($f_{cu}$). The overall column slenderness ratio was chosen to be the primary variable with values of 5, 10 and 15. Other parameters were varied within each case of L/d ratio. The effects of the selected parameters on the behaviour of PEC columns were studied with respect to the failure mode, peak axial load, axial load versus average axial strain response, axial load versus lateral displacement response, moment versus lateral displacement behaviour and the axial load-moment interaction diagram. The results of the parametric study are presented in the paper and the influences of each of the parameters investigated are discussed.

키워드

참고문헌

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피인용 문헌

  1. Local and post-local buckling behavior of welded steel shapes in partially encased composite columns vol.108, 2016, https://doi.org/10.1016/j.tws.2016.08.003
  2. Numerical Study and Design Recommendations of Eccentrically Loaded Partially Encased Composite Columns pp.2093-6311, 2018, https://doi.org/10.1007/s13296-018-0179-7
  3. Equalizing Octagonal PEC Columns with Steel Columns: Experimental and Theoretical Study vol.23, pp.3, 2018, https://doi.org/10.1061/(ASCE)SC.1943-5576.0000375
  4. Experimental behavior of VHSC encased composite stub column under compression and end moment vol.31, pp.1, 2019, https://doi.org/10.12989/scs.2019.31.1.069
  5. Research on Application of Uplift-Restricted Slip-Permitted (URSP) Connectors in Steel-Concrete Composite Frames vol.9, pp.11, 2019, https://doi.org/10.3390/app9112235
  6. Partially encased composite columns using fiber reinforced concrete: experimental study vol.34, pp.6, 2015, https://doi.org/10.12989/scs.2020.34.6.909
  7. Flexural behavior of partially prefabricated partially encased composite beams vol.38, pp.6, 2015, https://doi.org/10.12989/scs.2021.38.6.705