Steel and Composite Structures

  • 제23권3호
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  • Pages.351-362
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  • 2017
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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 longitudinal shear behavior for composite floor slab

  • Kataoka, Marcela N. (University of Sao Paulo, Engineering School of Sao Carlos, Structural Department) ;
  • Friedrich, Juliana T. (University of Sao Paulo, Engineering School of Sao Carlos, Structural Department) ;
  • El Debs, Ana Lucia H.C. (University of Sao Paulo, Engineering School of Sao Carlos, Structural Department)
  • 투고 : 2015.06.11
  • 심사 : 2017.01.16
  • 발행 : 2017.02.28
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents an experimental study on the behavior of composite floor slab comprised by a new steel sheet and concrete slab. The strength of composite slabs depends mainly on the strength of the connection between the steel sheet and concrete, which is denoted by longitudinal shear strength. The composite slabs have three main failures modes, failure by bending, vertical shear failure and longitudinal shear failure. These modes are based on the load versus deflection curves that are obtained in bending tests. The longitudinal shear failure is brittle due to the mechanical connection was not capable of transferring the shear force until the failure by bending occurs. The vertical shear failure is observed in slabs with short span, large heights and high concentrated loads subjected near the supports. In order to analyze the behavior of the composite slab with a new steel sheet, six bending tests were undertaken aiming to provide information on their longitudinal shear strength, and to assess the failure mechanisms of the proposed connections. Two groups of slabs were tested, one with 3000 mm in length and other with 1500 mm in length. The tested composite slabs showed satisfactory composite behavior and longitudinal shear resistance, as good as well, the analysis confirmed that the developed sheet is suitable for use in composite structures without damage to the global behavior.

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과제정보

연구 과제 주관 기관 : University of Sao Paulo

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