DOI QR코드

DOI QR Code

Lateral strain-axial strain model for concrete columns confined by lateral reinforcement under axial compression

  • Hou, Chongchi (School of Civil Engineering, Shenyang Jianzhu University) ;
  • Zheng, Wenzhong (School of Civil Engineering, Harbin Institute of Technology)
  • 투고 : 2022.06.29
  • 심사 : 2022.08.29
  • 발행 : 2022.10.25

초록

The use of lateral reinforcement in confined concrete columns can improve bearing capacity and deformability. The lateral responses of lateral reinforcement significantly influence the effective confining pressure on core concrete. However, lateral strain-axial strain model of concrete columns confined by lateral reinforcement has not received enough attention. In this paper, based on experimental results of 85 concrete columns confined by lateral reinforcement under axial compression, the effect of unconfined concrete compressive strength, volumetric ratio, lateral reinforcement yield strength, and confinement type on lateral strain-axial strain curves was investigated. Through parameter analysis, it indicated that with the same level of axial strain, the lateral strain slightly increased with the increase in the unconfined concrete compressive strength, but decreased with the increase in volumetric ratio significantly. The lateral reinforcement yield strength had slight influence on lateral strain-axial strain curves. At the same level of lateral strain, the axial strain of specimen with spiral was larger than that of specimen with stirrup. Furthermore, a lateral strain-axial strain model for concrete columns confined by lateral reinforcement under axial compression was proposed by introducing the effects of unconfined concrete compressive strength, volumetric ratio, confinement type and effective confining pressure, which showed good agreement with the experimental results.

키워드

과제정보

The research described in this paper was financially supported by the National Natural Science Foundation of China (Grant number: 51678190).

참고문헌

  1. ACI 318 (2019), Building Code Requirements for Structural Concrete and Commentary, American Concrete Institute, Farmington Hills, MI, USA.
  2. ASTM D638-14 (2014), Standard Test Method for Tensile Properties of Plastics, ASTM International, West Conshohocken, USA.
  3. ASTM D695-10 (2010), Standard Test Method for Compressive Properties of Rigid Plastics, ASTM International, West Conshohocken, USA.
  4. Beni, A., Minehiro, N. and Fumio, W. (2001a), "New approach for modeling confined concrete I: Circle columns", J. Struct. Eng., 127(7), 743-750. https://doi.org/10.1061/(asce)0733-9445(2001)127:7(743).
  5. Beni, A., Minehiro, N. and Fumio, W. (2001b), "New approach for modeling confined concrete II: Rectangular columns", J. Struct. Eng., 127(7), 751-757. https://doi.org/10.1061/(asce)0733-9445(2001)127:7(751).
  6. Candappa, D.C., Sanjayan, J.G. and Setunge, S. (2001), "Complete triaxial stress-strain curves of high-strength concrete", J. Mater. Civil Eng., 13(3), 209-215. https://doi.org/10.1061/(asce)0899-1561(2001)13:3(2 09).
  7. CEB-FIB Bulletin 66 (2010), Mode Code Final Draft-Volume 2, Federation Internationale du Beton, Lausanne, Switzerland.
  8. Chang, W. and Zheng, W.Z. (2019), "Estimation of compressive strength of stirrup-confined circular columns using artificial neural works", Struct. Concrete, 20, 1328-1339. https://doi.org/10.1002/suco.201800259.
  9. Cusson, D. and Paultre, P. (1994), "Stress-strain concrete columns confined by rectangular ties", J. Struct. Eng., 120(3), 783-804. https://doi.org/10.1061/(asce)0733-9445(1994)120:3(783)
  10. Dong, C.X., Kwan, A.K.H. and Ho, J.C.M. (2015a), "A constitutive model for predicting the lateral strain of confined concrete", Eng. Struct., 91, 155-166. https://doi.org/10.1016/j.engstruct.2015.02.014.
  11. Dong, C.X., Kwan, A.K.H. and Ho, J.C.M. (2015b), "Effects of confining stiffness and rupture strain on performance of FRP confined concrete", Eng. Struct., 97, 1-14. https://doi.org/10.1016/j.engstruct.2015. 03. 037.
  12. Dong, C.X., Kwan, A.K.H. and Ho, J.C.M. (2016), "Axial and lateral stress-strain model for concrete-filled steel tubes with FRP jackets", Eng. Struct., 126, 365-378. https://doi.org/10.1016/j.engstruct.2016.07.059.
  13. Eid, R., Kovler, K., David, I., Khoury, W. and Miller, S. (2018), "Behavior and design of high-strength circular reinforced concrete columns subjected to axial compression", Eng. Struct., 173, 472-480. https://doi.org/10.1016/j.engstruct.2018.06.116.
  14. GB50010-2010 (2011), Code for Design of Concrete Structures, China Architecture & Building Press, Beijing, China.
  15. Giuseppe, C. and Giovanni, M. (2010), "Compressive behavior of short high-strength concrete columns", Eng. Struct., 32(9), 2755-2766. https://doi.org/10.1016/j.engstruct.2010.04.045.
  16. Ho, J.C.M., Ou, X.L., Chen, X.T., Wang, Q. and Lai, M.H. (2020), "A path dependent constitutive model for CFFT column", Eng. Struct., 210, 110367. https://doi.org/10.1016/j.engstruct.2020.110367.
  17. Hou, C.C., Zheng, W.Z. and Chang, W. (2020b), "Behaviour of high-strength concrete circular columns confined by high-strength spirals under concentric compression", J. Civil Eng. Manage., 26(6), 564-578. https://doi.org/10.3846/jcem.2020.12913.
  18. Hou, C.C., Zheng, W.Z., Li, S. and Wu, X.H. (2020a), "Experimental investigation of full-scale concrete columns confined by high-strength transverse reinforcement subjected to lateral cyclic loading", Arch. Civil Mech. Eng., 20, 115. https://doi.org/10.1007/s43452-020-00126-x.
  19. Issa, M.A. and Tobaa, H. (1994), "Strength and ductility enhancement in high-strength confined concrete", Mag. Concrete Res., 45(168), 177-189. https://doi.org/10.1680/macr.1994.46.168.177.
  20. Kim, S.W., Kim, Y.S., Lee, J.Y. and Kim, K.H. (2017) "Confined concrete with varying yield strengths of spirals", Mag. Concrete Res., 69(5), 217-229. https://doi.org/10.1680/jmacr.16.00053.
  21. Kwan, A.K.H., Dong, C.X. and Ho, J.C.M. (2015), "Axial and lateral stress-strain model for FRP confined concrete", Eng. Struct., 99, 285-295. https://doi.org/10.1016/j.engstruct.2015.04.046.
  22. Kwan, A.K.H., Dong, C.X. and Ho, J.C.M. (2016), "Axial and lateral stress-strain model for circular concrete-filled steel tubes with external steel confinement", Eng. Struct., 117, 528-541. https://doi.org/10.1016/j.engstruct.2016.03.026.
  23. Lai, M.H., Hanzic, L. and Ho, J.C.M. (2018), "Fillers to improve passing ability of concrete", Struct. Concrete, 20, 1-13. https://doi.org/10.1002/suco.201800047.
  24. Lai, M.H., Liang, Y.W., Wang, Q., Ren, F.M., Chen, X.T. and Ho, J.C.M. (2020a), "A stress-path dependent stress-strain model for FRP-confined concrete", Eng. Struct., 203, 109824. https://doi.org/10.1016/j.engstruct.2020.109824.
  25. Lai, M.H., Song, W., Ou, X.L., Chen, X.T., Wang, Q. and Ho, J.C.M. (2020b), "A path dependent stree-strain model for concrete-filled-steel-tube column", Eng. Struct., 211, 110312. https://doi.org/10.1016/j.engstruct.2020.110312.
  26. Lee, J.M., Kim, Y.S., Kim, S.W., Park, J.H. and Kim, K.H. (2016), "Structural performance of rectangular section confined by squared spirals with no longitudinal bars influencing the confinement", Arch. Civil Mech. Eng., 16, 795-804. https://doi.org/10.1016/j.acme.2016.05.005.
  27. Li, Y.Z., Cao, S.Y. and Jing, D.H. (2018b), "Concrete columns reinforced with high-strength steel subjected to reversed cycle loading", ACI Struct. J., 115(4), 1037-1048. https://doi.org/10.14359/51701296.
  28. Li, Y.Z., Cao, S.Y., Liang, H., Ni, X.Y. and Jing, D.H. (2018a), "Axial compressive behavior of concrete columns with grade 600 MPa reinforcing bars", Eng. Struct., 172, 497-507. https://doi.org/10.1016/j.engstruct.2018.06.047.
  29. Lim, J.C. and Ozbakkaloglu, T. (2015), "Lateral strain-to-axial strain relationship of confined concrete", J. Struct. Eng., 141(5), 1-18. https://doi.org/10.1061/(asce)st.1943-541x.0001094.
  30. Mander, J.B. (1983), "Seismic design of bridge piers", Ph.D. Dissertation, University of Canterbury, Christchurch, New Zealand.
  31. Mander, J.B., Priestley, M.J.N. and Park, R. (1988), "Theoretical stress-strain model for confined concrete", J. Struct. Eng., 114(8), 1804-1825. https://doi.org/10.1061/(asce)0733-445(1988)114:8(1804).
  32. Montoya, E., Vecchio, F.J. and Sheikh, S.A. (2001), "Compression field modeling of confined concrete", Struct. Eng. Mech., 12(3), 231-248. https://doi.org/10.12989/sem.2001.12.3.231.
  33. NZS3101 (2006), Concrete Structures Standard Part 1-The Design of Concrete Structures, Standard Association of New Zealand, Wellington, New Zealand.
  34. Paultre, P., Legeron, F. and Mongeau, D. (2001), "Influence of concrete strength and transverse reinforcement yield strength on behavior of high-strength concrete columns", ACI Struct. J., 98(4), 490-501. https://doi.org/10.14359/10292.
  35. Piscesa, B., Attard, M.M. and Samani, A.K. (2016), "A lateral strain plasticity model for FPR confined concrete", Compos. Struct., 158, 160-174. https://doi.org/10.1016/j.compstruct.2016.09.028.
  36. Razvi, S.R. and Saatcioglu, M. (1999), "Circular high-strength concrete columns under concentric compression", ACI Struct. J., 96(5), 817-825. https://doi.org/10.14359/736.
  37. Saatcioglu, M. and Razvi, S.R. (1998), "High-strength concrete columns with square sections under concentric compression", J. Struct. Eng., 124(12), 1438-1447. https://doi.org/10.1061/(asce)0733-9445(1998)124:12 (1438).
  38. Samani, A.K. and Attard, M.M. (2014), "Lateral strain model for concrete under compression", ACI Struct. J., 111(2), 441-461. https://doi.org/10.14359/51686532.
  39. Tasdemir, M.A., Tasdemir, C., Akyuz, S., Jefferson, A.D., Lydon, F.D. and Barr, B.I.G. (1998), "Evaluation of strains at peak stresses in concrete: A three-phase composite model approach", Cement Concrete Compos., 20(4), 301-318. https://doi.org/10.1016/s0958-9465(98)00012-2.
  40. Teng, J.G., Huang, Y.L., Lam, L. and Ye, L.P. (2006), "Theoretical model for fiber-reinforced polymer-confined concrete", J. Compos. Constr., 11(2), 201-210. https://doi.org/10.1061/(asce)1090-0268(2007)11:2 (201).
  41. Wang, W., Zhang, M., Tang, Y., Zhang, X. and Ding, X. (2017), "Behaviour of high-strength concrete columns confined by spiral reinforcement under uniaxial compression", Constr. Build. Mater., 154, 496-503. https://doi.org/10.1016/j.conbuildmat.2017.07.179.
  42. Xue, J., Zhao, X., Ke, X., Zhang, X., Zhang, F. and Zhang, P. (2020), "Experimental and numerical investigation of high-strength concrete encased steel columns with rectangular-spiral stirrups", J. Build. Eng., 32, 101518. https://doi.org/10.1016/j.jobe.2020.101518.