Computers and Concrete

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Reliability based calibration of the capacity design rule of reinforced concrete beam-column joints

  • Thomos, George C. (Laboratory of Reinforced Concrete, National Technical University of Athens) ;
  • Trezos, Constantin G. (Laboratory of Reinforced Concrete, National Technical University of Athens)
  • Received : 2010.01.17
  • Accepted : 2010.11.19
  • Published : 2011.12.25
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Abstract

The capacity design rule for beam-column joints, as adopted by the EC8, forces the formation of the plastic hinges to be developed in beams rather than in columns. This is achieved by deriving the design moments of the columns of a joint from equilibrium conditions, assuming that plastic hinges with their possible overstrengths have been developed in the adjacent beams of the joint. In this equilibrium the parameters (dimensions, material properties, axial forces etc) are, in general, random variables. Hence, the capacity design is associated with a probability of non-compliance (probability of failure). In the present study the probability of non-compliance of the capacity design rule of joints is being calculated by assuming the basic variables as random variables. Parameters affecting this probability are examined and a modification of the capacity design rule for beam-column joints is proposed, in order to achieve uniformity of the safety level.

Keywords

References

  1. Ayyub, B.M. and Lai, K.L. (1989), "Structural reliability assessment using latin hypercube sampling", Proceeding of the 5th international conference on structural safety and reliability, Vol. 2, p. 1177-84, San Francisco, August.
  2. Benavent, C.A. (2005), "Shaking table tests of reinforced concrete wide beam-column connections", Earthq. Eng. Struct. Dyn., 34, 1833-1839. https://doi.org/10.1002/eqe.507
  3. Calvi, G.M., Magenes, G. and Pampanin, S. (2002), "Relevance of beam-column joint damage and collapse in rc frame assessment", J. Earthq. Eng., 6(1), 75-100. https://doi.org/10.1080/13632460209350411
  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. Dyn., 37, 881-897. https://doi.org/10.1002/eqe.793
  5. Ditlevsen, O. and Madsen, H.O. (1996), Structural reliability methods, Chichester, John Wiley & Sons.
  6. EC 2 (2004), Design of concrete structure, Part 1-1: general rules and rules for buildings, European standard EN 1992-1-1, European Committee for Standardization (CEN), Brussels.
  7. EC 8-1 (2004), Design of structures for earthquake resistance, Part 1: general rules, seismic actions and rules for buildings, European standard EN 1998-1, European Committee for Standardization (CEN), Brussels.
  8. Epaarachchi, D.C. and Stewart, M.G. (2004), "Human error and reliability of multistory reinforced-concrete building construction", J. Perform. Constr. Fac., 18, 12-20. https://doi.org/10.1061/(ASCE)0887-3828(2004)18:1(12)
  9. Euro-International Committee for Concrete (CEB) (1993), CEB-FIP model code 1990, London, Thomas Telford.
  10. Gardoni, P. Kiureghian, A.D. and Mosalam, K.M. (2002), "Probabilistic capacity models and fragility estimates for reinforced concrete columns based on experimental observations", J. Eng. Mech., 128, 1024-1038. https://doi.org/10.1061/(ASCE)0733-9399(2002)128:10(1024)
  11. Iman, R.L. and Conover, W.J. (1980), "Small sample sensitivity analysis techniques for computer models, with an application to risk assessment", Commun. Stat. Theor. M., A9(17), 1749-842.
  12. Joint Committee on Structural Safety (2001), Probabilistic model code, Internet publication, http://www.jcss.ethz.ch.
  13. Lu, Y., Gu X., and Guan, J. (2005), "Probabilistic drift limits and performance evaluation of reinforced concrete columns", J. Struct. Eng., 131, 966-978. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:6(966)
  14. Nowak, A.S. and Collins, K.R. (2000), Reliability of structures, McGraw-Hill.
  15. McKay, M.D., Conover, W.J. and Beckman, R.J. (1979), "A comparison of three methods for selecting values of input variables in the analysis of output from a computer code", Technometrics, 21, 239-245.
  16. Melcher, R.E. (1999), Structural reliability analysis and prediction, Chichester, John Wiley & Sons.
  17. Tassios, T.P. and Lefas, J. (1984), "Ductility of concrete columns due to confinement", Scientific Papers of the Faculty of Civ. Eng., NTUA, 8(1-4).
  18. Thomos, G.C. and Trezos, C.G. (2006), "Examination of the probabilistic response of reinforced concrete structures under static non-linear analysis", Eng. Struct., 28, 120-133. https://doi.org/10.1016/j.engstruct.2005.08.003
  19. Trezos, C.G. (1998), "Reliability consideration of the structural response of reinforced concrete structures under seismic conditions", 11th European Conf. on Earthquake Engin., Paris.

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