DOI QR코드

DOI QR Code

A constitutive model for confined concrete in composite structures

  • Shi, Qing X. (Department of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Rong, Chong (Department of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Zhang, Ting (Department of Civil Engineering, Xi'an University of Architecture and Technology)
  • 투고 : 2016.12.05
  • 심사 : 2017.05.19
  • 발행 : 2017.08.30

초록

The constitutive relation is an important factor in analysis of confined concrete in composite structures. In order to propose a constitutive model for nonlinear analysis of confined concrete, lateral restraint mechanism of confined concrete is firstly analyze to study the generalities. As the foundation of the constitutive model, peak stress and peak strain is the first step in research. According to the generalities and the Twin Shear Unified Strength Theory, a novel unified equation for peak stress and peak strain are established. It is well coincident with experimental results. Based on the general constitutive relations and the unified equation for peak stress and peak strain, we propose a unified and convenient constitutive model for confined concrete with fewer material parameters. Two examples involved with steel tube confined concrete and hoop-confined concrete are considered. The proposed constitutive model coincides well with the experimental results. This constitutive model can also be extended for nonlinear analysis to other types of confined concrete.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation of China

참고문헌

  1. Cai, S.H. (2003), Modern Steel Tube Confined Concrete Structures, China Communications Press, Beijing, China.
  2. Chung, H.S., Yang, K.H., Lee, Y.H. and Eun, H.C. (2002), "Stressstrain curve of laterally confined concrete", Eng. Struct., 24(9), 1153-1163. https://doi.org/10.1016/S0141-0296(02)00049-4
  3. Chung, K.S., Yoo, J.H. and Kim, J.H. (2013), "Experimental and analytical investigation of high-strength concrete-filled steel tube square columns subjected to flexural loading", Steel Compos. Struct., Int. J., 14(2), 133-153. https://doi.org/10.12989/scs.2013.14.2.133
  4. Daniel, C. and Patrick, P. (1995), "Stress-strain model for confined high strength concrete", J. Struct. Eng., 121(3), 468-477. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:3(468)
  5. Guo, Zh.H., Zhang, X.Q., Zhang, D.Ch. and Wang, R.Q. (1982), "Experimental investigation of the complete stress-strain curve of concrete", J. Build. Struct., 3, 1-12.
  6. Han, L.H. and Yang, Y.F. (2007), The Technology of Modern Steel Tube Confined Concrete Structures, China Building Industry Press, Beijing, China.
  7. Harries, K.A. and Kharel, A.G. (2003), "Experimental investigation of the behavior of variably confined concrete", Cement Concrete Res., 33(6), 873-880. https://doi.org/10.1016/S0008-8846(02)01086-4
  8. Hong, K.N., Han, S.H. and Yi, S.T. (2006), "High-strength concrete columns confined by low-volumetric ratio lateralties", Eng. Struct., 28(9), 1346-1353. https://doi.org/10.1016/j.engstruct.2006.01.010
  9. Lee, S.J. and Lee, S.J. (2007), "Capacity and the momentcurvature relationship of high-strength concrete filled steel tube columns under eccentric loads", Steel Compos. Struct., Int. J., 7(2), 135-160. https://doi.org/10.12989/scs.2007.7.2.135
  10. Li, N., Lu, Y.Y., Li, S. and Liang, H.J. (2015), "Statistical-based evaluation of design codes for circular concrete-filled steel tube columns", Steel Compos. Struct., Int. J., 18(2), 519-546. https://doi.org/10.12989/scs.2015.18.2.519
  11. Lim, J.C. and Ozbakkaloglu, T. (2014), "Lateral strain-to-axial strain relationship of confined concrete", J. Struct. Eng., 141(5), 04014141.
  12. 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)
  13. Patel, V.I., Liang, Q.Q. and Hadi, M.N.S. (2012), "Nonlinear inelastic behavior of circular concrete-filled steel tubular slender beam-columns with preload effect", Concrete Inst. Australia, 13, 395-402.
  14. Ren, Q.X., Hou, C., Lam, D. and Han, L.H. (2014), "Experiments on the bearing capacity of tapered concrete filled double skin steel tubular (CFDST) stub columns", Steel Compos. Struct., Int. J., 17(5), 667-686. https://doi.org/10.12989/scs.2014.17.5.667
  15. Sakino, K., Nakahara, H., Morino, S. and Nishiyama, I. (2004), "Behavior of centrally loaded concrete-filled steel-Tube short columns", J. Struct. Eng., 130(2), 180-188. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:2(180)
  16. Salim, R. and Murat, S. (1999), "Confinement model for highstrength concrete", J. Struct. Eng., 125(3), 281-289. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(281)
  17. Samani, A.K. and Attard, M.M. (2012), "A stress-strain model for uniaxial and confined concrete under compression", Eng. Struct., 41, 335-349. https://doi.org/10.1016/j.engstruct.2012.03.027
  18. Scott, B.D. (1982), "Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates-discussion", ACI Struct. J., 79(6), 13-27.
  19. Shi, Q.X., Tian, Y., Wang, N. and Hou, W. (2011), "Comparison study of axial behavior of high-strength concrete confined by normal-and high-strength lateralties", Adv. Sci. Lett., 4(8), 2681-2685. https://doi.org/10.1166/asl.2011.1648
  20. Shi, Q.X., Wang, N., Wang, Q.W. and Men, J.J. (2013), "Uniaxial compressive stress-strain model for high-strength concrete confined with high-strength lateral ties", Eng. Mech., 30, 131-137.
  21. Shi, Q.X., Wang, N., Tian, J.B. and Shi, J.L. (2014), "A practical stress-strain model for high-strength stirrups confined concrete", J. Build. Mater., 17, 216-222.
  22. Soliman, E.K.S. (2011), "Behavior of long confined concrete column", Ain Shams Eng. J., 2(3), 141-148. https://doi.org/10.1016/j.asej.2011.09.003
  23. Tian, C., Xiao, C., Chen, T., Fu, X., Tian, C. and Xiao, C. (2014), "Experimental study on through-beam connection system for concrete filled steel tube column-rc beam", Steel Compos. Struct., Int. J., 16(2), 187-201. https://doi.org/10.12989/scs.2014.16.2.187
  24. Toutanji, H. (2001), "Design equations for concrete columns confined with hybrid composite materials", Adv. Compos. Mater., 10(2-3), 127-138. https://doi.org/10.1163/156855101753396609
  25. Toutanji, H. and Saafi, M. (2002), "Stress-strain behavior of concrete columns confined with hybrid composite materials", Mater. Struct., 35(6), 338-347. https://doi.org/10.1007/BF02483153
  26. Varma, A.H., Sause, R. and Ricles, J.M. (2005), "Development and validation of fiber model for high-strength square concrete filled steel tube beam-columns", ACI Struct. J., 102(1), 73-84.
  27. Yu, M.H., Li, J.C. and Ma, G.W. (2007), Structural Plasticity, Springer, Berlin, Germany.
  28. Yu, T., Teng, J.G., Wong, Y.L. and Dong, S.L. (2010), "Finite element modeling of confined concrete-I Drucker-Prager type plasticity model", Eng. Struct., 32(3), 665-679. https://doi.org/10.1016/j.engstruct.2009.11.014
  29. Zhang, S.M., Liu, J.P. and Ma, L. (2007), "Experimental research and bearing capacity analysis of axially compressed stub columns of circular tube confined high-strength concrete", China Civil Eng. J., 40, 24-31.