Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

A numerical analysis of compressive strength of rectangular concrete columns confined by FRP

  • Lin, Huei-Jeng (Department of Engineering Science and Ocean Engineering National Taiwan University) ;
  • Liao, Chin-I (Department of Engineering Science and Ocean Engineering National Taiwan University) ;
  • Yang, Chin (Department of Engineering Science and Ocean Engineering National Taiwan University)
  • Received : 2005.07.01
  • Accepted : 2006.07.03
  • Published : 2006.05.25
⟨ Previous Next ⟩

Abstract

This investigation presents an analysis procedure for simulating the compressive behavior of a rectangular concrete column confined by fiber-reinforced plastic (FRP) under uniaxial load. That is, the entire stress-strain curve can be drawn through the present analysis procedure. The modified Mander's stress-strain model (Mander, et al. 1988) and finite element method are adopted in this analysis procedure. The numerical analysis results are compared with the experimental results to verify the accuracy of the analysis procedure. This study offers a useful analysis procedure of researching the compressive behavior of rectangular concrete columns confined by FRP. Two main parameters, the number of FRP layers and the radius of the round corners of a rectangular column, are investigated. The numerical results show that non-uniform stresses occur and reduce the sectional effective area owing to the geometry of the confined rectangular column. The stresses are concentrated at the corners of the rectangular column. Compressive strength of a rectangular column increases greatly because the number of FRP layers increase. The maximum predicted compressive stress of the rectangular column has approximately 10% error as compared to the experimental results. Comparing the numerical and experimental results demonstrates that the accuracy of this analysis procedure is credible. Besides, the stress-strain curves of the R30 models, which are rectangular concrete column with large radius of round corners, are almost bilinear. This calculated results conform to the expectation and show the present analysis procedure are more suitable than Mander's model (1988) to analyze the compressive behavior of the rectangular concrete column confined by FRP.

Keywords

References

  1. Hoshikuma, J., Kawashima, K., Nagaya, K. and Taylor, A.W. (1997), 'Stress-strain model for confined reinforced concrete in bridge piers', J. Struct. Eng., 123(5), May, 624-633 https://doi.org/10.1061/(ASCE)0733-9445(1997)123:5(624)
  2. Lam, L. and Teng, J.G. (2001), 'Compressive strength of FRP-confined concrete in rectangular columns', FRP Composites in Civil Engineering, 1, 335-342
  3. Lin, Huei-Jeng and Liao, Chin-I (2004), 'Compressive strength of reinforced concrete column confined by composite material', Compo. Struct., 65, pp. 239-250 https://doi.org/10.1016/j.compstruct.2003.11.001
  4. Liu, Jing and Foster, Stephen J. (1998), 'Finite-element model for confined concrete columns', J. Struct. Eng., 124(9), September, 1011-1017 https://doi.org/10.1061/(ASCE)0733-9445(1998)124:9(1011)
  5. Liu, Jing and Foster, Stephen J. (2000), 'A three-dimensional finite element model for confined concrete structures', Comput Struct., 77(5), July, 441-451 https://doi.org/10.1016/S0045-7949(00)00007-9
  6. Mander, J.B., Priestley, M.J.N. and Park, R. (1988), 'Theoretical stress-strain model for confined concrete', J. Struct. Eng., 114(8), August, 1804-1826 https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  7. Mirmiran, Amir, Shahaway, Mohsen, Samaan, Michel, EI Echary, Hazem, Mastrapa, Juan Carlos and Pico, Odell (1998), 'Effect of column parameters on FRP-Confined confined concrete', J. Comp. Constr., 2(4), November
  8. Mirmiran, Amir, Zagers, Kenneth and Yuan, Wenqing (2000), 'Nonlinear finite element modeling of concrete confined by fiber composites', Finite Elements in Analysis and Design, Elsevier, 35(1), 9-96
  9. Parin, Azadeh and Wang, Wei (2001), 'Behavior of FRP jacketed concrete columns under eccentric loading', J. Compo. Constr., 5(3), August, 146-152 https://doi.org/10.1061/(ASCE)1090-0268(2001)5:3(146)
  10. Pessiki, Stephen, Harries, Kent A., Kestner, Justin T., Sause, Richard and Rides, James M. (2000), 'Axial behavior of reinforced concrete columns confined with FRP jackets', J. Comp. Constr., 4(3), August, 237-245
  11. Rochett, Pierre and Labossiere, Pierre (2000), 'Axial testing of rectangular columns confined with composites'. J. Comp. Constr., 4(3), August, 129-136 https://doi.org/10.1061/(ASCE)1090-0268(2000)4:3(129)
  12. Saatcioglu, Murat, and Razvi, Salim R. (1992), 'Strength and ductility of confined concrete', J. Struct. Eng., 118(6), June, 1590-1607 https://doi.org/10.1061/(ASCE)0733-9445(1992)118:6(1590)
  13. Shamim, A. Sheikh and Uzumeri, S.M. (1980), 'Strength and ductility of tied concrete columns', J. Struct. Div., 106(ST5), May, 1079-1102
  14. Shamim, A. Sheikh and Uzumeri, S.M. (1982), 'Analytical model for concrete confinement in tied columns', J. Struct. Div., 108(ST12), December, 2703-2721

Cited by

  1. Compressive strength of circular hollow reinforced concrete confined by an internal steel tube vol.24, pp.9, 2010, https://doi.org/10.1016/j.conbuildmat.2010.02.022
  2. Maximum concrete stress developed in unconfined flexural RC members vol.8, pp.2, 2006, https://doi.org/10.12989/cac.2011.8.2.207
  3. Minimum deformability design of high-strength concrete beams in non-seismic regions vol.8, pp.4, 2006, https://doi.org/10.12989/cac.2011.8.4.445
  4. Reliability analysis of proposed capacity equation for predicting the behavior of steel-tube concrete columns confined with CFRP sheets vol.25, pp.5, 2020, https://doi.org/10.12989/cac.2020.25.5.383