Structural Engineering and Mechanics

  • 제24권1호
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  • Pages.107-136
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  • 2006
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Shear strength of steel fiber reinforced concrete beams with stirrups

  • Campione, G. (Dipartimento di Ingegneria Strutturale e Geotecnica, Universita di Palermo) ;
  • La Mendola, L. (Dipartimento di Ingegneria Strutturale e Geotecnica, Universita di Palermo) ;
  • Papia, M. (Dipartimento di Ingegneria Strutturale e Geotecnica, Universita di Palermo)
  • 투고 : 2005.07.26
  • 심사 : 2006.04.28
  • 발행 : 2006.09.10
⟨ 이전 논문 다음 논문 ⟩

초록

The present paper proposes a semi-empirical analytical expression that is capable of determining the shear strength of reinforced concrete beams with longitudinal bars, in the presence of reinforcing fibers and transverse stirrups. The expression is based on an evaluation of the strength contribution of beam and arch actions and it makes it possible to take their interaction with the fibers into account. For the strength contribution of stirrups, the effective stress reached at beam failure was considered by introducing an effectiveness function. This function shows the share of beam action strength contribution on the global strength of the beam calculated including the effect of fibers. The expression is calibrated on the basis of experimental data available in literature referring to fibrous reinforced concrete beams with steel fibers and recently obtained by the authors. It can also include the following variables in the strength previsions: - geometrical ratio of longitudinal bars in tension; - shear span to depth ratio; - strength of materials and fiber characteristics; - size effects. Finally, some of the more recent analytical expressions that are capable of predicting the shear strength of fibrous concrete beams, also in the presence of stirrups, are mentioned and a comparison is made with experimental data and with the results obtained by the authors.

키워드

참고문헌

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피인용 문헌

  1. Fibrous reinforced concrete beams in flexure: Experimental investigation, analytical modelling and design considerations vol.30, pp.11, 2008, https://doi.org/10.1016/j.engstruct.2008.04.019
  2. Shear strength of full-scale steel fibre-reinforced concrete beams without stirrups vol.11, pp.5, 2013, https://doi.org/10.12989/cac.2013.11.5.365
  3. Statically-Indeterminate SFRC Columns under Cyclic Loads vol.17, pp.10, 2014, https://doi.org/10.1260/1369-4332.17.10.1403
  4. Simple Plastic Model for Shear Critical SFRC Beams vol.136, pp.4, 2010, https://doi.org/10.1061/(ASCE)ST.1943-541X.0000127
  5. Shear behaviour of steel-fibre-reinforced concrete simply supported beams vol.167, pp.9, 2014, https://doi.org/10.1680/stbu.12.00068
  6. Experimental Investigation of the Deformation Behavior of SFRC Beams with an Ordinary Reinforcement vol.50, pp.4, 2014, https://doi.org/10.1007/s11029-014-9428-9
  7. Steel-fibre-reinforced concrete coupling beams subjected to monotonic loading vol.61, pp.1, 2009, https://doi.org/10.1680/macr.2008.00019
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  11. A simplified finite element model for assessing steel fibre reinforced concrete structural performance vol.173, 2016, https://doi.org/10.1016/j.compstruc.2016.05.017
  12. Empirical modeling of shear strength of steel fiber reinforced concrete beams by gene expression programming vol.23, pp.3-4, 2013, https://doi.org/10.1007/s00521-012-0999-x
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  14. Generalization of shear truss model to the case of SFRC beams with stirrups vol.9, pp.3, 2006, https://doi.org/10.12989/cac.2012.9.3.227