Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Parametrical study of the behavior of exterior unreinforced concrete beam-column joints through numerical modeling

  • Silva, Matheus F.A. (University of Sao Paulo, Department of Structures) ;
  • Haach, Vladimir G. (University of Sao Paulo, Department of Structures)
  • Received : 2016.01.12
  • Accepted : 2016.04.15
  • Published : 2016.08.25
⟨ Previous Next ⟩

Abstract

Exterior beam-column joints are structural elements that ensure connection between beams and columns. The joint strength is generally assumed to be governed by the structural element of lowest load capacity (beam or column), however, the joint may be the weakest link. The joint shear behavior is still not well understood due to the influence of several variables, such as geometry of the connection, stress level in the column, concrete strength and longitudinal beam reinforcement. A parametrical study based only on experiments would be impracticable and not necessarily exposes the failure mechanisms. This paper reports on a set of numerical simulations conducted in DIANA$^{(R)}$ software for the investigation of the shear strength of exterior joints. The geometry of the joints and stress level on the column are the variables evaluated. Results have led to empirical expressions that provide the shear strength of unreinforced exterior beam-column joints.

Keywords

References

  1. Abbas, A.A., Mohsin, S.M.S. and Cotsovos, D.M. (2014), "Seismic response of steel fibre reinforced concrete beam-column joints", Eng. Struct., 59, 261-283. https://doi.org/10.1016/j.engstruct.2013.10.046
  2. Baglin, P. and Scott, R. (2000), "Finite element modeling of reinforced concrete beam-column connections", ACI Struct. J., 97(6), 886-894.
  3. Bakir, P.G. and Boduroglu, H.M. (2002), "A new design equation for predicting the joint shear strength of monotonically loaded exterior beam-column joints", Eng. Struct., 24(8), 1105-1117. https://doi.org/10.1016/S0141-0296(02)00038-X
  4. Chalioris, C.E., Favvata, M.J. and Karayannis, C.G. (2008), "Reinforced concrete beam-column joints with crossed inclined bars under cyclic deformations", Earthq. Eng. Struct. Dy., 37(6), 881-897. https://doi.org/10.1002/eqe.793
  5. Clyde, C., Pantelides, C.P. and Reaveley, L.D. (2000), "Performance-Based Evaluation of Exterior Reinforced Concrete Building Joints for Seismic Excitation", PEER Report 2000/05; University of California, Berkeley.
  6. COMITE EURO-INTERNATIONAL DU BETON (1993), Model Code 1990. MC-90. CEB-FIP, Bulletin D'Information, n.204.
  7. DIANA (2009a), DIANA finite element analysis, User's manual release 9, Element library, Delft, Netherland: TNO DIANA.
  8. DIANA (2009b), DIANA finite element analysis, User's manual release 9, Material library, Delft, Netherland: TNO DIANA.
  9. Ehsani, M.R. and Wight, J.K. (1985), "Exterior reinforced concrete beam-to-column connections subjected to earthquake-type loading", J. Proceedings, 82(4), 492-499.
  10. Ehsani, M.R. and Wight, J.K. (1990), "Confinement steel requirements for connections in ductile frames", J. Struct. Eng., 116(3), 751-767. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:3(751)
  11. El-Amoury, T. and Ghobarah, A. (2002), "Seismic rehabilitation of beam-column joint using GFRP sheets", Eng. Struct., 24(11), 1397-1407. https://doi.org/10.1016/S0141-0296(02)00081-0
  12. Ghobarah, A. and Said, A. (2002), "Shear strengthening of beam-column joints", Eng. Struct., 24(7), 881-888. https://doi.org/10.1016/S0141-0296(02)00026-3
  13. Haach, V.G., El, A.L.H.D.C. and El Debs, M.K. (2008), "Evaluation of the influence of the column axial load on the behavior of monotonically loaded R/C exterior beam-column joints through numerical simulations", Eng. Struct., 30(4), 965-975. https://doi.org/10.1016/j.engstruct.2007.06.005
  14. Haach, V.G., El, A.L.H.D.C. and El Debs, M.K. (2014), "Influence of high column axial loads in exterior R/C beam-column joints", J. Civil Eng., 18(2), 558-565.
  15. Hamil, S.J. (2000), "Reinforced concrete beam-column connection behavior", Ph.D thesis; Durham University, UK.
  16. Hegger, J., Sherif, A. and Roeser, W. (2003), "Nonseismic design of beam-column joints", Struct. J., 100(5), 654-664.
  17. Hegger, J., Sherif, A. and Roeser, W. (2004), "Nonlinear finite element analysis of reinforced concrete beam-column connections", Struct. J., 101(5), 604-614.
  18. Hwang, S.J. and Lee, H.J. (1999), "Analytical model for predicting shear strengths of exterior reinforced concrete beam-column joints for seismic resistance", Struct. J., 96(5), 846-858.
  19. Hwang, S.J., Lee, H.J., Liao, T.F., Wang, K.C. and Tsai, H.H. (2005), "Role of hoops on shear strength of reinforced concrete beam-column joints", ACI Struct. J.-American Concrete Inst., 102(3), 445-453.
  20. Karayannis, C.G., Chalioris, C.E. and Sirkelis, G.M. (2008), "Local retrofit of exterior RC beam-column joints using thin RC jackets-An experimental study", Earthq. Eng. Struct. Dy., 37(5), 727-746. https://doi.org/10.1002/eqe.783
  21. Kim, J., LaFave, J.M. and Song, J. (2009), "Joint shear behaviour of reinforced concrete beam-column connections", Mag. Concrete Res., 61(2), 119-132. https://doi.org/10.1680/macr.2008.00068
  22. Kuang, J.S. and Wong, H.F. (2006), "Effects of beam bar anchorage on beam-column joint behaviour", Proceedings of the Institution of Civil Engineers-Structures and Buildings, 159(2), 115-124. https://doi.org/10.1680/stbu.2006.159.2.115
  23. Lee, H.J. and Yu, S.Y. (2009), "Cyclic response of exterior beam-column joints with different anchorage methods", ACI Struct. J., 106(3), 329.
  24. Marques, J. and Jirsa, J. (1972), "A study of hooked bar anchorages in beam-column joints", Research Report Number No. 33. Final Report; University of Texas, Austin.
  25. Masi, A., Santarsiero, G., Lignola, G.P. and Verderame, G.M. (2013), "Study of the seismic behavior of external RC beam-column joints through experimental tests and numerical simulations", Eng. Struct., 52, 207-219. https://doi.org/10.1016/j.engstruct.2013.02.023
  26. Murty, C.V.R. (2003), "Effectiveness of reinforcement details in exterior reinforced concrete beam-column joints for earthquake resistance", ACI Struct. J., 2, 149-156.
  27. Ortiz, I.R. (1993), "Strut-and-Tie modeling of reinforced concrete. Short beams and beam-column joints", Ph.D. Thesis; University of Westminster, London, UK.
  28. Pantelides, C.P., Hansen, J. and Reaveley, L.D. (2002), "Assessment of reinforced concrete building exterior joints with substandard details", PEER Report 2002/18; University of California, Berkeley.
  29. Park, R. and Paulay, T. (1975), Reinforced concrete structures, Wiley Interscience, New York, NY, USA.
  30. Park, S. and Mosalam, K.M. (2012), "Parameters for shear strength prediction of exterior beam-column joints without transverse reinforcement", Eng. Struct., 36, 198-209. https://doi.org/10.1016/j.engstruct.2011.11.017
  31. Parker, D.E. and Bullman, P.J.M. (1997), "Shear strength within reinforced concrete beam-column joints", Struct. Eng., 75(4).
  32. Saravanan, J. and Kumaran, G. (2011), "Joint shear strength of FRP reinforced concrete beam-column joints", Central Eur. J. Eng., 1(1), 89-102. https://doi.org/10.2478/s13531-011-0009-6
  33. Sarsam, K. and Phipps, M. (1985), "The shear design of in situ reinforced concrete beam-column joints subjected to monotonic loading", Mag. Concrete Res., 37(130), 16-28. https://doi.org/10.1680/macr.1985.37.130.16
  34. Scott, R. (1992), "The effects of detailing on RC beam/column connection behavior", Struct. Eng., 70(18), 318-324.
  35. Scott, R. (1996), "Intrinsic mechanisms in reinforced concrete beam-column connection behavior", ACI Struct. J., 93(3), 1-11.
  36. Scott, R.H. and Hamill, S.J. (1998), "Connection zone strain in reinforced concrete beam column connections", Proceedings of the 11th International Conference on Experimental Mechanics, 65-69.
  37. Selby, R.G. and Vecchio, F.J. (1993), "Three dimensional constitutive relations for reinforced concrete", Department of Civil Engineering, University of Toronto, Toronto, Canada, Publication No. 93-02.
  38. Tsonos, A. (2007), "Cyclic load behavior of reinforced concrete beam-column subassemblages of modern structures", ACI Struct. J., 104(4), 468-478.
  39. Tsonos, A.G. (2002), "Seismic repair of reinforced concrete beam column subassembleges of modern structures by epoxy injection technique", Struct. Eng. Mech., 14(5), 543-563. https://doi.org/10.12989/sem.2002.14.5.543
  40. Vecchio, F. and Collins, M. (1993), "Compression response of cracked reinforced concrete", J. Struct. Eng., 119(12), 3590-3610. https://doi.org/10.1061/(ASCE)0733-9445(1993)119:12(3590)
  41. Vollum, R.L. and Newman, J.B. (1999), "The design of external, reinforced concrete beam-column joints", Struct. Eng., 77(23 and 24), 21-27.
  42. Wong, H. (2005), "Shear strength and seismic performance of non-seismically designed reinforced concrete beam-column joints", Ph.D. Thesis; The Hong Kong University of Science and Technology.
  43. Wong, H.F. and Kuang, J.S. (2008), "Effects of beam-column depth ratio on joint seismic behaviour", Proceedings of the ICE-Structures and Buildings, 161(SB2), 91-101.

Cited by

  1. Behaviour of recycled aggregate concrete beam-column connections in presence of PET fibers at the joint region vol.21, pp.6, 2016, https://doi.org/10.12989/cac.2018.21.6.669
  2. Rehabilitation of exterior RC beam-column connections using epoxy resin injection and galvanized steel wire mesh vol.16, pp.3, 2016, https://doi.org/10.12989/eas.2019.16.3.253
  3. Behavior of repaired RAC beam-column joints using steel welded wire mesh jacketed with cement mortar vol.8, pp.2, 2019, https://doi.org/10.12989/acc.2019.8.2.091