Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Effect of tube area on the behavior of concrete filled tubular columns

  • Gupta, P.K. (Department of Civil Engineering, Indian Institute of Technology Roorkee) ;
  • Verma, V.K. (Department of Civil Engineering, Indian Institute of Technology Roorkee) ;
  • Khaudhair, Ziyad A. (Department of Civil Engineering, Indian Institute of Technology Roorkee) ;
  • Singh, Heaven (Department of Civil Engineering, Indian Institute of Technology Roorkee)
  • Received : 2012.12.27
  • Accepted : 2014.11.15
  • Published : 2015.02.25
⟨ Previous Next ⟩

Abstract

In the present study, a Finite Element Model has been developed and used to study the effect of diameter to wall thickness ratio (D/t) of steel tube filled with concrete under axial loading on its behavior and load carrying capacity. The model is verified by comparing its findings with available experimental results. Influence of thickness and area of steel tube on strength, ductility, confinement and failure mode shapes has been studied. Strength enhancement factors, load factor, confinement contribution, percentage of steel and ductility index are defined and introduced for the assessment. A parametric study by varying length and thickness of tube has been carried out. Diameter of tube kept constant and equals to 140 mm while thickness has been varied between 1 mm and 6 mm. Equations were developed to find out the ultimate load and confined concrete strength of concrete. Variation of lateral confining pressure along the length of concrete cylinder was obtained and found that it varies along the length. The increase in length of tubes has a minimal effect on strength of tube but it affects the failure mode shapes. The findings indicate that optimum use of materials can be achieved by deciding the thickness of steel tube. A better ductility index can be obtained with the use of higher thickness of tube.

Keywords

References

  1. ACI (1999), "Building code requirements for structural concrete and commentary", Am. Concrete Inst., ACI 318-99, Detroit (USA).
  2. Ellobody, E., Young, B. and Lam, D. (2006), "Behaviour of normal and high strength concrete filled compact steel tube circular stub columns", J. Constr. Steel Res., 62, 706-715. https://doi.org/10.1016/j.jcsr.2005.11.002
  3. Farid, A., Mohammad, A., Suliman, A. (2013), "Experimental and numerical investigation of the compressive behavior of concrete filled steel tubes (CFSTs)", J. Constr. Steel Res., 80, 429-439. https://doi.org/10.1016/j.jcsr.2012.10.005
  4. Giakoumelis, G. and Lam, D. (2004), "Axial capacity of circular concrete filled tube columns", J J. Constr. Steel Res., 60, 1049-1068. https://doi.org/10.1016/j.jcsr.2003.10.001
  5. Gupta, P.K., Sarda, S.M. and Kumar, M.S. (2007), "Experimental and computational study of concrete filled steel tubular columns under axial loads", J. Constr. Steel Res., 63, 182-193. https://doi.org/10.1016/j.jcsr.2006.04.004
  6. Hu, H.T., Huang, C.S., Wu, M.H. and Wu, Y.M. (2009), "Nonlinear analysis of axially loaded concrete filled tube columns with confinement effect", J. Struct. Eng., 129(10), 1322-1231.
  7. Huang, C.S., Yeh, Y.K., Liu, G.Y., Hu, H.T., Tsai, K.C., Weng, Y.T., Wang, S.H. and Wu, M.H. (2002), "Axial load behavior of stiffened concrete filled steel columns", J. Struct. Eng., 128(9), 1222-1230. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:9(1222)
  8. Hsuan-Teh,, Hu, Huang, Chiung-Shiann, Ming-Hsien, and Yih-Min, Wu (2003), "Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect", J. Struct. Eng., 129(10), 1322-1329. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:10(1322)
  9. Liang, Q.Q. and Sam, F. (2009), "Nonlinear analysis of circular concrete filled steel tubular short columns under axial loading", J. Constr. Steel Res., 65, 2186-2196. https://doi.org/10.1016/j.jcsr.2009.06.015
  10. Liu, J., Sumei, Z., Xiaodong, Z. and Lanhui, G. (2009), "Behaviour and strength of circular tube confined reinforced concrete columns", J. Constr. Steel Res., 65, 1447-1458. https://doi.org/10.1016/j.jcsr.2009.03.014
  11. Mahamed Mahmoud El- Heweity (2012), "On the performance of circular concrete filled high strength steel columns under axial loading", Alexandria Eng. J., 1-12.
  12. Mander, J.B., Priestley, M.J.N. and Park, R. (1988), "Theoritical stress-strain model for confined concrete", J. Struct. Eng., 114(8), 1804-1830. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  13. O'shea, Martin, D. and Bridge Russell, Q. (2000), "Design of circular thin walled concrete filled steel tubes", J. Struct. Eng., 126(11), 1295-1303. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:11(1295)
  14. Oliveira, W.L.A., Nardin, S.D., Debs, A.L.H.C.E. and Debs, M.K.E. (2009), "Influence of concrete strength and length/diameter on the axial capacity of CFT columns", J. Constr. Steel Res., 65, 2103-2110. https://doi.org/10.1016/j.jcsr.2009.07.004
  15. Richart, F.E., Brandzaeg, A. and Brown, R.L. (1928), "A study of the failure of concrete under combined compressive stresses", Bull185, Champaign (IL, USA); University of Illinios Engineering Experimental station.
  16. Saenz, L.P. (1964), "Discussion of 'Equation for the stress-strain curve of concrete' by P.Desayi, and S. Krishnan", J. Am. Concrete Inst., 61, 1229-1264.
  17. 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)
  18. Schneider, S.P. (1998), "Axially loaded concrete filled steel tubes", J. Struct. Eng., 124(10), 1125-1138. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:10(1125)
  19. Shams, M. and Saadeghvaziri, M.A. (1999), "Nonlinear response of concrete filled steel tubular columns under axial loading", ACI Struct. J., 96(6), 1009-1018.

Cited by

  1. Interfacial stresses in RC beam bonded with a functionally graded material plate vol.60, pp.4, 2016, https://doi.org/10.12989/sem.2016.60.4.693
  2. Elastic analysis effect of adhesive layer characteristics in steel beam strengthened with a fiber-reinforced polymer plates vol.59, pp.1, 2016, https://doi.org/10.12989/sem.2016.59.1.083
  3. Axial compressive behavior of special-shaped concrete filled tube mega column coupled with multiple cavities vol.23, pp.6, 2015, https://doi.org/10.12989/scs.2017.23.6.633
  4. Analytical and numerical modeling of interfacial stresses in beams bonded with a thin plate vol.2, pp.1, 2015, https://doi.org/10.12989/acd.2017.2.1.057
  5. Analysis of actively-confined concrete columns using prestressed steel tubes vol.19, pp.5, 2015, https://doi.org/10.12989/cac.2017.19.5.477
  6. Elastic analysis of interfacial stress concentrations in CFRP-RC hybrid beams: Effect of creep and shrinkage vol.6, pp.3, 2015, https://doi.org/10.12989/amr.2017.6.3.257
  7. Evaluation of interfacial shear stress in active steel tube-confined concrete columns vol.20, pp.4, 2015, https://doi.org/10.12989/cac.2017.20.4.469
  8. Analytical analysis of the interfacial shear stress in RC beams strengthened with prestressed exponentially-varying properties plate vol.7, pp.1, 2018, https://doi.org/10.12989/amr.2018.7.1.029
  9. FE modeling of Partially Steel-Jacketed (PSJ) RC columns using CDP model vol.22, pp.2, 2015, https://doi.org/10.12989/cac.2018.22.2.143
  10. Nonlinear analysis of damaged RC beams strengthened with glass fiber reinforced polymer plate under symmetric loads vol.15, pp.2, 2015, https://doi.org/10.12989/eas.2018.15.2.113
  11. Hygrothermal effects on the behavior of reinforced-concrete beams strengthened by bonded composite laminate plates vol.69, pp.3, 2015, https://doi.org/10.12989/sem.2019.69.3.327
  12. Effect of porosity in interfacial stress analysis of perfect FGM beams reinforced with a porous functionally graded materials plate vol.72, pp.3, 2015, https://doi.org/10.12989/sem.2019.72.3.293
  13. GS-MARS method for predicting the ultimate load-carrying capacity of rectangular CFST columns under eccentric loading vol.25, pp.1, 2015, https://doi.org/10.12989/cac.2020.25.1.001
  14. The effect of active and passive confining pressure on compressive behavior of STCC and CFST vol.9, pp.2, 2015, https://doi.org/10.12989/acc.2020.9.2.161