Steel and Composite Structures

  • 제49권5호
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  • Pages.571-585
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  • 2023
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental investigation of the influence of fibre content on the flexural performance of simply supported and continuous steel/UHPC composite slabs

  • Sirui Chen (School of Architecture and Civil Engineering, University of Adelaide) ;
  • Phillip Visintin (School of Architecture and Civil Engineering, University of Adelaide) ;
  • Deric J. Oehlers (School of Architecture and Civil Engineering, University of Adelaide)
  • 투고 : 2022.09.26
  • 심사 : 2023.09.12
  • 발행 : 2023.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

The application of relatively low volumes of fibres in normal strength concrete has been shown to be of significant benefit when applied to composite slabs with profiled sheet decking. This paper reports on an experimental study aimed at quantifying further potential benefits that may arise from applying ultra-high performance fibre reinforced concrete. To assess performance six simply supported beams were tested under hogging and sagging loading configurations along with three two span continuous beams. Fibre contents are varied from 0% to 2% and changes in strength, deformation, crack width and moment redistribution are measured. At the serviceability limit state, it is shown that the addition of high fibre volumes can significantly enhance member stiffness and reduce crack widths in all beams. At the ultimate limit state it is observed that a transition from 0% to 1% fibres significantly increases strength but that there is a maximum fibre volume beyond which no further increases in strength are possible. Conversely, member ductility and moment redistribution are shown to be strongly proportional to fibre volume.

키워드

과제정보

This material is based upon work supported by the Australian Research Council Discovery Project 190102650. Sirui Chen was supported by an Australian Government Research Training Program Scholarship. The authors also wish to acknowledge the assistance of Mr Jon Ayoub in completing the lab testing.

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