Structural Engineering and Mechanics

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Predicting the failure modes of monotonically loaded reinforced concrete exterior beam-column joints

  • Bakir, Pelin G. (Faculty of Civil Engineering, Istanbul Technical University) ;
  • Boduroglu, Hasan M. (Faculty of Civil Engineering, Istanbul Technical University)
  • Received : 2001.10.16
  • Accepted : 2002.07.22
  • Published : 2002.09.25
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Abstract

This study aims at postulating a simple methodology for predicting the failure modes of monotonically loaded reinforced concrete beam-column joints. All the factors that affect the failure modes of joints are discussed in detail using an experimental database of monotonically loaded exterior beam-column joints. The relative contributions of the strut and truss mechanisms to joint shear strength are determined based on the test results. A simple design equation for the beam longitudinal reinforcement ratio for joints with low, medium and high amount of stirrups is developed. The factors influencing the failure modes of monotonically loaded exterior beam-column joints are investigated in detail. Design charts that predict the failure modes of exterior beam-column connections both with and without stirrups are developed. Experimental data are compared with the design charts. The results show that the simple methodology gives very accurate predictions of the failure modes.

Keywords

References

  1. ACI-ASCE Committee 352R-91 (1998), "Recommendations for the design of beam-column joints in monolithic, reinforced concrete structures", ACI Manual of Concrete Practice: Part 3, Detroit, American Concrete Institute.
  2. Bakir, P.G. and Boduro lu, M.H. (2002a), "Earthquake risk and hazard mitigation in Turkey", Accepted for Publication in Earthquake Spectra EERI.
  3. Bakir, P.G. and Boduro lu, M.H. (2002b), "A new design equation for predicting the shear strength of monotonically loaded exterior beam-column joints", Eng. Struct. J., 24(8), 1105-1117, July, Elsevier Science. https://doi.org/10.1016/S0141-0296(02)00038-X
  4. BS8110: Structural use of concrete: Part 1 (1997), Code of practice for design and construction, London, British Standards Institution.
  5. CEB-FIP International Recommendations 1990. (1993), Thomas Telford, London.
  6. Collins, M.P. and Mitchell, D. (1991), Prestressed Concrete Structures, Prentice-Hall Publication, Englewood Cliffs.
  7. Eurocode 2. (1995), Design of concrete structures: Part 1: General rules and rules for buildings, London, British Standards Institution.
  8. Fuji, S. and Morita, S. (1991), "Comparison between interior and exterior reinforced concrete beam column joint behavior", ACI SP-123, US 145-165.
  9. Kordina, K. (1984), "Bewehrungsfuhrung in Ecken und Rahmenendknoten", Deutcher Ausschuss fur Stahlbeton, Heft 354
  10. Ortiz, R. (1993), "Strut and tie modeling of reinforced concrete short beams and beam column joints", PhD Thesis, University of Westminster.
  11. Pantazopoulou, S. and Bonacci, J. (1992), "Consideration of questions about beam-column joints", ACI Struct. J., 89(1).
  12. Park, R. and Paulay, T. (1975), Reinforced Concrete Structures, John Wiley & Sons, US.
  13. Parker, D.E. and Bullman, P.J.M. (1997), "Shear strength within reinforced concrete beam - column joints", The Structural Engineer, 75(4), 53-57.
  14. Scott, R.H. (1992), "The effects of detailing on RC beam column connection behavior", The Structural Engineer, 70(18), 318-324.
  15. Scott, R.H. and Hamill, S.J. (1998), "Connection zone strain in reinforced concrete beam column connections", Proc. the 11th Int. Conf. on Experimental Mechanics, Oxford, UK, 65-69.
  16. Taylor, H.P.J. (1974), "The Behavior of insitu concrete beam column joints", Technical Report 42.492, Cement and Concrete Association.
  17. Vollum, R.L. (1998), "Design and analysis of exterior beam column connections", PhD Thesis, Imperial College, London.

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