Structural Engineering and Mechanics

  • 제31권2호
  • /
  • Pages.225-235
  • /
  • 2009
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

The design of reinforced concrete beams for shear in current practice: A new analytical model

  • Londhe, R.S. (Applied Mechanics Department, Government College of Engineering Aurangabad)
  • 투고 : 2007.12.13
  • 심사 : 2008.12.26
  • 발행 : 2009.01.30
⟨ 이전 논문 다음 논문 ⟩

초록

The present paper reviews the shear design (of reinforced concrete beam) provisions of four different national codes and proposes a new but simplified shear strength empirical expression, incorporating variables such as compressive strength of concrete, percentage of longitudinal and vertical steel/s, depth of beam in terms of shear span-to-depth ratio, for reinforced concrete (RC) beams without shear reinforcement. The expression is based on the experimental investigation on RC beams without shear reinforcement. Further, the comparisons of shear design provisions of four National codes viz.: (i) IS 456-2000, (iii) BS 8110-1997, (iv) ACI 318-2002 (v) EuroCode-2-2002 and the proposed expression for the prediction of shear capacity of normal beam/s, have been made by solving a numerical example. The results of the numerical example worked out suggest that there is need for revision in the shear design procedure of different codes. Also, the proposed expression is less conservative among the IS, BS & Eurocode.

키워드

참고문헌

  1. ACI Committee 318 (2002), 'Building code requirements for structural concrete (ACI 318-99) and commentary ACI 318R-99', American Concrete Institute, Detroit, Michigan, USA
  2. ASCE-ACI Committee 426 (1973), 'The shear strength of reinforced concrete members', J. Struct. Eng., 99(6), 1091-1187
  3. Bazant, Z.P. and Kim, J.K. (1984), 'Size effect on shear failure of longitudinally reinforced beams', ACI J., 81(5), 456-468
  4. Bohigas, A.C. (2002), 'Shear design of high-strength concrete Beams', Ph.D. Thesis, University of Toronto, Barcelona
  5. British Standard BS 8110 (1997), 'Structural use of concrete-Part 1: Code of practice for design and construction', British Standard Institution, Milton Keynes, London
  6. Desai, S. (2003), 'Influence of constituents of concrete on its tensile strength and shear carrying capacity', Mag. Concrete Res., 55(1), 77-84
  7. European Committee for Standardization, EN1992-1-1:2004 NO002: 'Design of concrete structures, Part 1: General rules and regulations for buildings', Revised Final Draft, English Edition, British Standards Institution London
  8. Hwang, S.J., Lu, W.Y. and Lee, H.J. (2000), 'Shear strength prediction for deep beams', ACI Struct. J., 97(3), 367-377
  9. Indian Standards IS 456 (2000), 'Indian standard code of practice for plain and reinforced concrete for general building construction', Bureau of Indian Standards, Manak Bhavan, New Delhi, India
  10. Kani, G.N.J. (1966), 'Basic facts concerning shear failure', ACI J., 63(6), 675-692
  11. Khuntia, M., Stojadinovic, B. and Goel, S.C. (1999), 'Shear strength of normal and high-strength fiber reinforced concrete beams without stirrups', ACI Struct. J., 96(2), 282-289
  12. Kim, J.K. and Park, Y.D. (1996), 'Prediction of sear strength of reinforced concrete beams without web reinforcement', ACI Mater. J., 93(3), 213-222
  13. Kong, F.K. (1990), Reinforced Concrete Deep Beams, Van Nostrand Reinhold, New York, 285
  14. Kong, F.K., Robins, P.J., Singh, A. and Sharp, G.R. (1972), 'Shear analysis and design of reinforced concrete deep beams', Struct. Eng., 50(10), 405-409
  15. Kong, P.Y.L. and Rangan, B.V. (1998), 'Shear strength of high-performance concrete beams', ACI Struct. J., 95(6), 677-687
  16. Londhe R.S. (2007), 'Experimental studies in transfer beams for high-rise buildings', Thesis submitted to Roorkee, India for Ph.D., Dept. of Civil Engineering, Indian Institute of Technology, Roorkee
  17. Londhe, R.S. (2007), 'Role of shear span-to-depth ratio on shear capacity of transfer beams in high-rise buildings', Proceedings of the Third International Conference on Structural Engineering Mechanics and Computation (SEMC 2007), 10-12 September 2007, Cape Town, South Africa
  18. Manual, R.F., Sligt, B.W. and Sutar, G.T. (1971), 'Deep beam behavior affected by length and shear span variations', ACI J., 68, 954-958
  19. Roller, J.J. and Russell, H.G. (1990), 'Shear strength of high- strength concrete beams with web reinforcement', ACI Struct. J., 87(2), 191-199
  20. Russo, G., Somma, G. and Mitri, D. (2005), 'Shear strength analysis and prediction for reinforced concrete beams without stirrups', J. Struct. Eng., 131(1), 66-74 https://doi.org/10.1061/(ASCE)0733-9445(2005)131:1(66)
  21. Tan, K.H., Kong, F.K., Teng, S. and Weng, L.W. (1997), 'Effect of web reinforcement on high-strength concrete deep beams', ACI Struct. J., 94(5), 572-581
  22. Vecchio, F.J., Collins, M. and Aspoitis, J. (1994), 'High strength concrete elements subjected to shear', ACI Struct. J., 91(4), 423-433

피인용 문헌

  1. Assessment of Shear Strength of Circular Reinforced Concrete Beams vol.113, pp.6, 2016, https://doi.org/10.14359/51689145
  2. Investigation into shear properties of medium strength reinforced concrete beams vol.35, pp.3, 2010, https://doi.org/10.12989/sem.2010.35.3.265
  3. A stress field approach for the shear capacity of RC beams with stirrups vol.73, pp.5, 2009, https://doi.org/10.12989/sem.2020.73.5.515