Computers and Concrete

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Numerical simulation of concrete confined by transverse reinforcement

  • Song, Zhenhuan (Institute for Infrastructure and Environment, Joint Institute of Civil and Environmental Engineering, School of Engineering, The University of Edinburgh) ;
  • Lu, Yong (Institute for Infrastructure and Environment, Joint Institute of Civil and Environmental Engineering, School of Engineering, The University of Edinburgh)
  • Received : 2010.01.03
  • Accepted : 2010.02.26
  • Published : 2011.02.25
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Abstract

The behaviour of concrete confined by transverse reinforcement is a classical topic. Numerous studies have been conducted to establish the stress-strain relationships for concrete under various confining reinforcement arrangements. Many empirical and semi-empirical formulas exist. Simplified analytical models have also been proposed to evaluate the increase in the strength and ductility of confined concrete. However, relatively few studies have been conducted to utilise advanced computational models for a realistic simulation of the behaviour of concrete confined by transverse reinforcement. As a matter of fact, high fidelity simulations using the latest numerical solvers in conjunction with advanced material constitutive models can be a powerful means to investigating the mechanisms underlying the confining effects of different reinforcement schemes. This paper presents a study on the use of high fidelity finite element models for the investigation of the behaviour of concrete confined by stirrups, as well as the interpretation of the numerical results. The development of the models is described in detail, and the essential modelling considerations are discussed. The models are then validated by simulating representative experimental studies on short columns with different confining reinforcement schemes. The development and distribution of the confining stress and the subsequent increase in the axial strength are examined. The models are shown to be capable of reproducing the behaviour of the confined concrete realistically, paving a way for systematic parametric studies and investigation into complicated confinement, load combination, and dynamic loading situations.

Keywords

References

  1. Bazant, Z.P. and Oh, B.H. (1983), "Crack band theory for fracture of concrete", Mater. Struct. (RILEM, Paris), 16, 155-177.
  2. CEB-FIP Model Code 1990 (1993), Comite Euro-International du Beton, Redwood Books, Trowbridge, Wiltshire, UK.
  3. Faria, R., Pouca, N.V. and Delgado, R. (2004), "Simulation of the cyclic behaviour of R/C rectangular hollow section bridge piers via a detailed numerical model", J. Earthq. Eng., 8(5), 725-748.
  4. Foster, S.J., Liu, J. and Sheikh, S.A. (1998), "Cover spalling in HSC columns loaded in concentric compression", J. Struct. Eng. - ASCE, 124(12), 1431-1437. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:12(1431)
  5. Kent, D.C. and Park, R. (1971), "Flexural members with confined concrete", J. Struct. Div. - ASCE, 97(7), 169-1990.
  6. Kwon, M. and Spacone, E. (2002), "Three-dimensional analysis of reinforced concrete columns", Comput. Struct., 80(2), 199-212. https://doi.org/10.1016/S0045-7949(01)00155-9
  7. Liu, J. and Foster, S.J. (2000), "A three-dimensional finite element model for confined concrete structures", Comput. Struct., 77(5), 441-451. https://doi.org/10.1016/S0045-7949(00)00007-9
  8. LS-DYNA (2007), Keyword user's manual, Version 971, Livermore Software Technology Corporation.
  9. Malvar, L.J., Crawford, J.E. and Morrill, K.B. (1999), ''K&C concrete material model, release III: automated generation of material model input'', Rep. TR-99-24, Karagozian & Case Structural Engineers, Burbank, Calif.
  10. Malvar, L.J., Crawford, J.E., Wesevich, J.W. and Simons, D. (1997), "A plasticity concrete material model for DYNA3D", Int. J. Impact Eng., 19(9/10), 847-873. https://doi.org/10.1016/S0734-743X(97)00023-7
  11. Mander, J.B., Priestley, M.J.N. and Park, R. (1988), "Theoretical stress-strain model for confined concrete", J Struct. Eng, 114(8), 1804-1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  12. Papanikolaou, V.K. and Kappos, A.J. (2009), "Numerical study of confinement effectiveness in solid and hollow reinforced concrete bridge piers: methodology", Comput. Struct., 87, 1427-1439. https://doi.org/10.1016/j.compstruc.2009.05.004
  13. Park, R., Priestley, M.J.N. and Gill, W.D. (1982), "Ductility of square confined concrete columns", J. Struct. Eng., 108(4), 929-950.
  14. Saatcioglu, M. and Razvi, S.R. (1992), "Strength and ductility of confined concrete", J. Struct. Eng., 118(6), 1590-1607. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:6(1590)
  15. Scott, B.D., Park, R. and Priestley, M.J.N. (1982), "Stress-strain behaviour of concrete confined by overlapping hoops at high and low strain rates", ACI J., 79(1), 13-27.
  16. Sheikh, S.A. and Uzumeri, S.M. (1980), "Strength and ductility of tied concrete columns", J. Struct. Div., 106(ST5), 1079-1102.
  17. Sheikh, S.A. and Uzumeri, S.M. (1982), "Analytical model for concrete confinement in tied columns", J. Struct. Div., 108(ST12), 2703-2722.
  18. Thambiratnam, D.P. (1990), "Computer analysis of stress waves in driven piles", Comput. Struct., 36(4), 691-699. https://doi.org/10.1016/0045-7949(90)90084-F
  19. Tu, Z.G. and Lu, Y. (2009), "Evaluation of typical concrete material models used in hydrocodes for high dynamic response simulations", Int. J. Impact Eng., 36(1), 132-146. https://doi.org/10.1016/j.ijimpeng.2007.12.010

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