Structural Engineering and Mechanics

  • 제21권6호
  • /
  • Pages.737-765
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  • 2005
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Partially confined circular members subjected to axial compression: Analysis of concrete confined by steel ties

  • Eid, R. (Department of Civil Engineering, University of Sherbrooke) ;
  • Dancygier, A.N. (National Building Research Institute, Department of Structural Engineering and Construction Management, Faculty of Civil and Environmental Engineering, Technion-Israel Institute of Technology)
  • 투고 : 2004.08.02
  • 심사 : 2005.10.05
  • 발행 : 2005.12.20
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a theoretical model for the behavior of partially confined axi-symmetric reinforced concrete members subjected to axial load. The analysis uses the theories of elasticity and plasticity to cover the full range of the concrete behavior. Analysis of the elastic range of the problem involves boundary conditions that are defined along a relatively simple geometry. However, extending the analysis into the plastic range involves difficulties that arise from the irregular geometry of the boundary between the plastic zone and the elastic zone, a boundary which is also changing as the axial load increases. The solution is derived by replacing the discrete steel ties with an equivalent tube of thickness $t_{eq}$ and by analyzing the concrete cylinder, which is uniformly confined by the equivalent tube. The equivalency criterion initiates from a theoretical analysis of the problem in its elastic range where further finite element analysis shows that this criterion is valid also for the plastic range of the cylinder material. According to the proposed model, the efficiency of the lateral reinforcement can be evaluated by the equivalent thickness $t_{eq}$. Comparison with published test results of confined reinforced concrete stress-strain curves shows good agreement between the test and the analytical results.

키워드

참고문헌

  1. Assa, B., Nishiyama, M. and Watanabe, F. (2001), 'New approach for modeling confined concrete. I: Circular column', J. Struct. Eng, ASCE, 127(7), 743-757 https://doi.org/10.1061/(ASCE)0733-9445(2001)127:7(743)
  2. ATENA 2D (2003), Computer Program for Nonlinear Finite Element Analysis of Reinforced Concrete Structures, Cervenka Consulting, Version 2.1
  3. Cusson, D. and Paultre, P. (1995), 'Stress-strain model for confined high-strength concrete', J. Struct. Eng., ASCE, 121(3), 468-477 https://doi.org/10.1061/(ASCE)0733-9445(1995)121:3(468)
  4. Eid, R. (2004), 'Structural analysis of partially confined reinforced concrete in members with axi-symmetric cross-section and loading', Ph.D. Thesis, Department of Civil and Environmental Engineering, Technion-Israel Institute of Technology, Haifa, Israel
  5. Fafitis, A. and Shah, S.P. (1985), 'Predictions of ultimate behavior of confined columns subjected to large deformations', ACI Struct. J., 82(4), 423-433
  6. Grassl, P., Lundgren, K. and Gylltoft, K. (2002), 'Concrete in compression: A plasticity theory with a novel hardening law', Int. J. Solids Struct., 39, 5205-5223 https://doi.org/10.1016/S0020-7683(02)00408-0
  7. Hoshikuma, J., Kawashima, K., Nagaya, K. and Taylor, A.W. (1997), 'Stress-strain model for confined reinforced concrete in bridge piers', J. Struct. Eng., ASCE, 123(5), 624-633 https://doi.org/10.1061/(ASCE)0733-9445(1997)123:5(624)
  8. Imran, I. (1994), 'Applications of non-associated plasticity in modeling the mechanical response of concrete', Ph.D. Thesis, Dept. of Civil Engineering, University of Toronto, Toronto, ON, Canada
  9. Imran, I. and Pantazopoulou, S.J. (1996), 'Experimental study of plain concrete under triaxial stress', ACI Materials J., 93(6), 589-601
  10. Imran, I. and Pantazopoulou, S.J. (2001), 'Plasticity model for concrete under triaxial compression', J. Eng. Mech., ASCE, 127(3), 281-290 https://doi.org/10.1061/(ASCE)0733-9399(2001)127:3(281)
  11. Iyengar, K.T., Sundara, Raja, Desayi, P. and Reddy, K.N. (1970), 'Stress-strain characteristics of concrete confined in steel binders', Magazine of Concrete Research, 22(72), 173-184 https://doi.org/10.1680/macr.1970.22.72.173
  12. Karabinis, A.I. and Kiousis, P.D. (1994), 'Effects of confinement on concrete columns: Plasticity approach', J. Struct. Eng., ASCE, 120(9), 2747-2767
  13. Legeron, F. and Paultre, P. (2003), 'Uniaxial confinement model for normal- and high-strength concrete columns', J. Struct. Eng., ASCE, 129(2), 241-252 https://doi.org/10.1061/(ASCE)0733-9399(2003)129:2(241)
  14. Li, B., Park, R. and Tanaka, H. (2001), 'Stress-strain behavior of high-strength concrete confined by ultra-high and normal-strength transverse reinforcement', ACI Struct. J., 98(3), 395-406
  15. Mander, J.B., Priestley, M.J.N. and Park, R.J.T. (1984), 'Seismic design of bridge piers', Research Report No. 84-2, Univ. of Canterbury, New Zealand
  16. Mander, J.B., Priestley, M.J.N. and Park, R.J.T. (1988), 'Theoretical stress-strain model for confined concrete', J. Struct. Eng, ASCE, 114(8), 1804-1826
  17. Mander, J.B., Priestley, M.J.N. and Park, R.J.T. (1988), 'Observed stress-strain behavior of confined concrete', J. Struct. Eng., ASCE, 114(8), 1827-1849
  18. Menetrey, P. and Willam, K.J. (1995), 'Triaxial failure criterion for concrete and its generalization', ACI Struct. J., 92(3), 311-318
  19. Ortiz, M. and Simo, J.C. (1986), 'An analysis of a new class of integration algorithms for elastoplastic constitutive relations', Int. J. Num. Methods in Eng., 23, 353-366 https://doi.org/10.1002/nme.1620230303
  20. Park, R., Priestly, M.J.N, and Gill, W.D. (1982), 'Ductility of square-confined concrete columns', J. Struct. Eng., ASCE, 108(4), 929-950
  21. Popovics, S. (1973), 'A numerical approach to the complete stress-strain curves for concrete', Cement and Concrete Research, 3(5), 583-599 https://doi.org/10.1016/0008-8846(73)90096-3
  22. Richart, F.E., Brandtzaeg, A. and Brown, R.L. (1928), 'The failure of plain and spirally reinforced concrete in compression', Bulletin No. 190, Engineering Experiment Station, University of Illinois, Urbana
  23. Saatcioglu, M. and Razvi, S.R. (1999), 'Confinement model for high-strength concrete', J. Struct. Eng., ASCE, 125(3), 281-289 https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(281)
  24. Sheikh, S.A. and Uzumeri, S.M. (1980), 'Strength and ductility of tied concrete columns', J. Struct. Eng., ASCE, 106(5), 1079-1102
  25. Sheikh, S.A. and Uzumeri, S.M. (1982), 'Analytical model for concrete confinement in tied columns', J. Struct. Eng, ASCE, 108(12), 2703-2722
  26. Sheikh, S.A. and Toklucu, M.T. (1993), 'Reinforced concrete columns confined by circular spirals and hoops', ACI Struct. J., 90(5), 542-553
  27. Scott, B.D., Park, R. and Priestly, M.J.N. (1982), 'Stress-strain behavior of concrete confined by overlapping hoops at high and low strain rates', J. Struct. Eng., ASCE, 79(1), 13-27

피인용 문헌

  1. Plasticity-based model for circular concrete columns confined with fibre-composite sheets vol.29, pp.12, 2007, https://doi.org/10.1016/j.engstruct.2007.09.005
  2. Stress–strain curve for concrete in circular columns based on elastoplastic analysis vol.43, pp.1-2, 2010, https://doi.org/10.1617/s11527-009-9470-6
  3. Analytical Model for FRP-Confined Circular Reinforced Concrete Columns vol.12, pp.5, 2008, https://doi.org/10.1061/(ASCE)1090-0268(2008)12:5(541)
  4. Elastoplastic Confinement Model for Circular Concrete Columns vol.133, pp.12, 2007, https://doi.org/10.1061/(ASCE)0733-9445(2007)133:12(1821)