Structural Engineering and Mechanics

  • 제58권1호
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  • Pages.1-19
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  • 2016
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Curvature ductility of high strength concrete beams according to Eurocode 2

  • Bouzid, Haytham (Department of Civil Engineering, Laboratory of Structures, Geotechnics and Risks (LSGR), Universite of Hassiba Benbouali of Chlef) ;
  • Kassoul, Amar (Department of Civil Engineering, Laboratory of Structures, Geotechnics and Risks (LSGR), Universite of Hassiba Benbouali of Chlef)
  • 투고 : 2014.12.05
  • 심사 : 2015.12.23
  • 발행 : 2016.04.10
⟨ 이전 논문 다음 논문 ⟩

초록

Recently, the high-strength concrete is increasingly used in the construction of reinforced concrete structures due to its benefits, but this use is influenced negatively on the local ductility of structural elements. The objective of this study is the prediction of a new approach to evaluate the curvature ductility factor of high strength concrete beams according to Eurocode 2. After the presentation of the Constitutive laws of materials and the evaluation method of curvature ductility according to the Eurocode 2, we conduct a parametric study on the factors influencing the curvature ductility of inflected sections. The calibrating of the obtained results allows predicting a very simple approach for estimating the curvature ductility factor. The proposed formula allows to calculate the curvature ductility factor of high strength concrete beams directly according to the concrete strength $f_{ck}$, the yield strength of steel $f_{yk}$ and the ratio of tension and compression reinforcements ${\rho}$ and ${\rho}^{\prime}$ respectively, this proposed formula is validated by theoretical and experimental results of different researchers.

키워드

참고문헌

  1. ACI 318 (2014), Building Code Requirements for Structural Concrete (ACI 318-14) and commentary (ACI 318R-14), American Concrete Institute, Farmington Hills USA.
  2. Arslan, G. and Ercan, C. (2010), "Curvature ductility prediction of reinforced high strength concrete beam sections", J. Civil Eng. Manage., 16(4), 462-470. https://doi.org/10.3846/jcem.2010.52
  3. CAN3-A23.3-94 (1994), Design of concrete structures for building, Canadian Standards Association, Ontario Canada.
  4. EN 1992-1-1 (2004), Design of concrete structures-Part 1-1: General rules and rules for buildings, Eurocode 2, Brussels.
  5. Hong, G.H. (2011), "Flexural performance evaluation of reinforced concrete beams with high-strength concrete and reinforcing bars", J. Arch. Inst. Korea, 27(6), 49-56.
  6. Jang, I.Y., Park, H.G., Kim, S.S., Kim, J.H. and Kim, Y.G. (2008), "On the ductility of high-strength concrete beams", Int. J. Concrete Struct. Mater., 2(2), 115-122. https://doi.org/10.4334/IJCSM.2008.2.2.115
  7. Kassoul, A. and Bougara, A. (2010), "Maximum ratio of longitudinal tensile reinforcement in high strength doubly reinforced concrete beams designed according to Eurocode 8", Eng. Struct., 32, 3206-3213. https://doi.org/10.1016/j.engstruct.2010.06.009
  8. Kwan, A.K.H., Ho, J.C.M. and Pam, H.J. (2002), "Flexural strength and ductility of reinforced concrete beams", Proceedings of The ICE Advances In Struc. Buil, 152(4), 361-369. https://doi.org/10.1680/stbu.2002.152.4.361
  9. Lee, H.J. (2013a), "Predictions of curvature ductility factor of reinforced concrete beam sections used high strength concrete and steel", J. Korean Soc. Civil Eng., 33(2), 483-493. https://doi.org/10.12652/Ksce.2013.33.2.483
  10. Lee, H.J. (2013b), "Evaluation on moment-curvature relations and curvature ductility factor of reinforced concrete beams with high strength materials", J. Korea Concrete Inst., 25(3), 283-294. https://doi.org/10.4334/JKCI.2013.25.3.283
  11. Maghsoudi, A.A. and Bengar, H.A. (2006), "Flexural ductility of HSC members", Struct. Eng. Mech., 24(2), 195-212. https://doi.org/10.12989/sem.2006.24.2.195
  12. Maghsoudi, A.A. and Sharifi, Y. (2009), "Ductility of high strength concrete heavily steel reinforced memb", Scientia Iranica Trans A Civil Eng, 16(4), 297-307.
  13. Mohammad, M., Suhatril, M., Shariati, M. And Ghanbari, F. (2013), "Ductility and strength assessment of hsc beams with varying of tensile reinforcement ratios", Struct. Eng. Mech., 48(6), 833-848. https://doi.org/10.12989/sem.2013.48.6.833
  14. Pam, H.J., Kwan, A.K.H. and Islam, M.S. (2001a), "Flexural strength and ductility of reinforced normal-and high-strength concrete beams", Proceedings of the ICE Struc. Buil, 146(4), 381-389. https://doi.org/10.1680/stbu.2001.146.4.381
  15. Pam, H.J., Kwan, A.K.H. and Ho, J.C.M. (2001b), "Post-Peak behavior and flexural ductility of doubly reinforced high-strength concrete beams", Struct. Eng. Mech., 12(5), 459-474. https://doi.org/10.12989/sem.2001.12.5.459
  16. Park, R. and Ruitong, D. (1988), "Ductility of doubly reinforced beam sections", ACI Struct. J., Title No 85-S24.
  17. prEN 1998-1 (2003), Design of structures for earthquake resistance Part 1: General rules, seismic actions and rules for buildings, Eurocode 8, Brussels.
  18. Rashid, M.A. and Mansur, M.A. (2005), "Reinforced high-strength concrete beams in flexure", ACI Struct. J., 102(3), 462-471.
  19. Shohana, I., Maina, K. and Noor, M. A. (2012), "Beam ductility experiment using 500 grade steel", Int. J. Sci. Eng. Inves., 1(1), 1-6.

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  2. Curvature ductility prediction of high strength concrete beams vol.66, pp.2, 2016, https://doi.org/10.12989/sem.2018.66.2.195
  3. New approach for Ductility analysis of partially prestressed concrete girders vol.70, pp.3, 2016, https://doi.org/10.12989/sem.2019.70.3.257
  4. A comprehensive FE model for slender HSC columns under biaxial eccentric loads vol.73, pp.1, 2016, https://doi.org/10.12989/sem.2020.73.1.017