Steel and Composite Structures

  • 제37권6호
  • /
  • Pages.741-759
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  • 2020
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Ultimate strength behavior of steel plate-concrete composite slabs: An experimental and theoretical study

  • Wu, Lili (School of Mechanics and Civil Engineering, China University of Mining and Technology) ;
  • Wang, Hui (School of Mechanics and Civil Engineering, China University of Mining and Technology) ;
  • Lin, Zhibin (Department of Civil and Environmental Engineering, North Dakota State University)
  • 투고 : 2019.11.19
  • 심사 : 2020.11.29
  • 발행 : 2020.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Steel plate-concrete composite slabs provide attractive features, such as more effective loading transfer, and more cost-effective stay-in-place forms, thereby enabling engineers to design more high-performance light structures. Although significant studies in the literatures have been directed toward designing and implementing the steel plate-concrete composite beams, there are limited data available for understanding of the composite slabs. To fill this gap, nine the composite slabs with different variables in this study were tested to unveil the impacts of the critical factors on the ultimate strength behavior. The key information of the findings included sample failure modes, crack pattern, and ultimate strength behavior of the composite slabs under either four-point or three-point loading. Test results showed that the failure modes varied from delamination to shear failures under different design factors. Particularly, the shear stud spacing and thicknesses of the concrete slabs significantly affected their ultimate load-carrying capacities. Moreover, an analytical model of the composite slabs was derived for determining their ultimate load-carrying capacity and was well verified by the experimental data. Further extensive parametric study using the proposed analytical methods was conducted for a more comprehensive investigation of those critical factors in their performance. These findings are expected to help engineers to better understand the structural behavior of the steel plate-concrete composite slabs and to ensure reliability of design and performance throughout their service life.

키워드

과제정보

The authors gratefully acknowledge the financial support provided by National Natural Science Foundation of China (#51278488, #51678564). The results, discussion, and opinions reflected in this paper are those of the authors only and do not necessarily represent those of the sponsor.

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