Steel and Composite Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Behavior of CFST columns with inner CFRP tubeunder biaxial eccentric loading

  • Li, Guochang (School of Civil Engineering, Shenyang Jianzhu University) ;
  • Yang, Zhijain (School of Civil Engineering, Shenyang Jianzhu University) ;
  • Lang, Yan (Department of Building Engineering, Suqian College) ;
  • Fang, Chen (Department of Civil Engineering, University of Texas at El Paso)
  • Received : 2016.05.25
  • Accepted : 2016.12.02
  • Published : 2016.12.30
⟨ Previous Next ⟩

Abstract

This paper presents the results of an experimental study on the behavior of a new type of composite FRP-concrete-steel member subjected to bi-axial eccentric loading. This new type of composite member is in the form of concrete-filled square steel tube slender columns with inner CFRP (carbon fiber-reinforced polymer) circular tube, composed of an inner CFRP tube and an outer steel tube with concrete filled in the two tubes. Tests on twenty-six specimens of high strength concrete-filled square steel tube columns with inner CFRP circular tube columns (HCFST-CFRP) were carried out. The parameters changed in the experiments include the slenderness ratio, eccentric ratio, concrete strength, steel ratio and CFRP ratio. The experimental results showed that the failure mode of HCFST-CFRP was similar to that of HCFST, and the specimens failed by local buckling because of the increase of lateral deflection. The steel tube and the CFRP worked together well before failure under bi-axial eccentric loading. Ductility of HCFST-CFRP was better than that of HCFST. The ultimate bearing capacity of test specimen was calculated with simplified formula, which agreed well with test results, and the simplified formula can be used to calculate the bearing capacity of HCFSTF within the parameters of this test.

Keywords

Acknowledgement

Supported by : National Science Foundation of China

References

  1. Albitar, M., Ozbakkaloglu, T. and Louk Fanggi, B.A. (2014), "Behavior of FRP-HSC-steel double-skin tubular columns under cyclic axial compression", J. Compos. Construct., 19(2), 04014041. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000510
  2. Bridge, R.Q. (1976), "Concrete Filled Steel Tubular Columns Report", No. 8283; School of Civil Engineering, University, Sydney, Australia.
  3. Fan, H., Li, Q.S., Tuan, A.Y. and Xu, L. (2009), "Seismic analysis of the world's tallest building", J. Construct. Steel Res., 65(5), 1206-1215. https://doi.org/10.1016/j.jcsr.2008.10.005
  4. Fam, A., Schnerch, D. and Rizkalla, S. (2005), "Rectangular filament-wound glass fiber reinforced polymer tubes filled with concrete under flexural and axial loading: experimental investigation", J. Compos. Construct., 9(1), 25-33. https://doi.org/10.1061/(ASCE)1090-0268(2005)9:1(25)
  5. Fanggi, B.A.L. and Ozbakkaloglu, T. (2015a), "Behavior of hollow and concrete-filled FRP-HSC and FRPHSC-steel composite columns subjected to concentric compression", Adv. Struct. Eng., 18(5), 715-738. https://doi.org/10.1260/1369-4332.18.5.715
  6. Fanggi, B.A.L. and Ozbakkaloglu, T. (2015b), "Square FRP-HSC-steel composite columns: Behavior under axial compression", Eng. Struct., 92, 156-171. https://doi.org/10.1016/j.engstruct.2015.03.005
  7. Guo, L.H., Zhang, S.M. and Xu, Z. (2011), "Behaviour of filled rectangular steel HSS composite columns under bi-axial bending", Adv. Struct. Eng., 14(2), 295-306. https://doi.org/10.1260/1369-4332.14.2.295
  8. Guo, L.H., Wang, Y.Y. and Zhang, S.M. (2012), "Experimental study of concrete-filled rectangular HSS columns subjected to biaxial bending", Adv. Struct. Eng., 15(8), 1329-1344. https://doi.org/10.1260/1369-4332.15.8.1329
  9. GB/T 50081-2002 (2003), Standard for Test Method of Mechanical Properties on Ordinary Concrete; Beijing, China.
  10. GB/T228-2002 (2003), Metallic Materials-Tensile Testing-Part 1: Method of Test at Room Temperature; Beijing, China.
  11. GB/T 3354-1999 (2000), Test Method for Tensile Properties of Oriented Fiber Reinforced Plastics; Beijing, China.
  12. Han, L.H. (2008), Concrete-Filled Steel Tube Structure-Theory and Practice, (2nd Edition), Science Press, Beijing, China.
  13. Han, L.H., Tao, Z., Liao, F.Y. and Xu, Y. (2010), "Tests on cyclic performance of FRP-concrete-steel double-skin tubular columns", Thin-Wall. Struct., 48(6), 430-439. https://doi.org/10.1016/j.tws.2010.01.007
  14. Idris, Y. and Ozbakkaloglu, T. (2016), "Behavior of square fiber reinforced polymer-high-strength concrete -steel double-skin tubular columns under combined axial compression and reversed-cyclic lateral loading", Eng. Struct.res, 118, 307-319. https://doi.org/10.1016/j.engstruct.2016.03.059
  15. Lam, L. and Teng, J.G. (2003), "Design-oriented stress-strain model for FRP-confined concrete", Construct. Build. Mater., 17(6), 471-489. https://doi.org/10.1016/S0950-0618(03)00045-X
  16. Li, G.C. and Li, S.J. (2011), "Nonlinear finite element analysis on short columns of high strength concrete filled square steel tube with inner CFRP circular tube", Proceedings of the 7th Conference on Steel and Aluminum Structure, Kuala Lumpur, Malaysia, August.
  17. Li, G.C. and Ma, L. (2009), "Experimental study on short columns of high-strength concrete filled square steel tubular with inner CFRP circular tubular under axially compressive load", Proceedings of International Symposium on Innovation & Sustainability of Structures in Civil Engineering, Guangzhou, China, November.
  18. Li, G.C. and Yang, Y. (2009), "Experimental study on high- strength concrete filled square steel tubular beam with inner CFRP circular tube", Proceedings of the 9th International Conference on Steel Concrete Composite and Hybrid Structures, Leeds, England, July.
  19. Li, G.C., Lang, Y. and Yang, Z.J. (2011), "Behavior of high strength CFSST stub columns with inner CFRP tube under axial compressive load", Adv. Steel Construct., 7(3), 239-254.
  20. Li, G.C., Yang, Z.J. and Lang, Y. (2010), "Experimental behavior of high strength concrete-filled square steel tube under bi-axial eccentric loading", Adv. Steel Construct., 6(4), 963-975.
  21. Li, G.C., Di, C.Y.,Tian L. and Fang, C. (2013a), "Nonlinear finite element analysis on long columns of highstrength concrete-filled square steel tube with inner CFRP circular tube under axial load", Adv. Steel Construct., 9(2), 124-138.
  22. Li, G.C., Yang, Z.J. and Lang, Y. (2013b), "Behavior of high strength concrete filled square steel tube columns with inner CFRP circular tube under bi-axial eccentric loading", Adv. Steel Construct., 9(3), 214-229.
  23. Liang, Q.Q., Patel V.I. and Hadi, M.N. (2012), "Biaxially loaded high-strength concrete-filled steel tubular slender beam-columns, Part I: Multiscale simulation", J. Construct. Steel Res., 75, 64-71. https://doi.org/10.1016/j.jcsr.2012.03.005
  24. Lue, D.M., Liu, J.L. and Yen, T. (2007), "Experimental study on rectangular CFT columns with highstrength concrete", J. Construct. Steel Res., 63(1), 37-44. https://doi.org/10.1016/j.jcsr.2006.03.007
  25. Matthys, S., Toutanji, H. and Taerwe, L. (2006), "Stress-strain behavior of large-scale circular columns confined with FRP composites", J. Struct. Eng., 132(1), 123-133. https://doi.org/10.1061/(ASCE)0733-9445(2006)132:1(123)
  26. Mursi, M. and Uy, B. (2006a), "Behavior and design of fabricated high strength steel columns subjected to biaxial bending, Part 1: Experiments", Adv. Steel Construct., 2(4), 286-315.
  27. Mursi, M. and Uy, B. (2006b), "Behavior and design of fabricated high strength steel columns subjected to biaxial bending, Part 2: Analysis and design codes", Adv. Steel Construct, 2(4), 316-354.
  28. Ozbakkaloglu, T. (2012), "Axial compressive behavior of square and rectangular high-strength concretefilled FRP tubes", J. Compos. Construct, 17(1), 151-161. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000321
  29. Ozbakkaloglu, T. and Akin, E. (2011), "Behavior of FRP-confined normal- and high-strength concrete under cyclic axial compression", J. Compos. Construct., 16(4), 451-463. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000273
  30. Ozbakkaloglu, T. and Fanggi, B.A.L. (2013), "Axial compressive behavior of FRP-concrete-steel doubleskin tubular columns made of normal-and high-strength concrete", J. Compos. Construct., 18(1), 04013027. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000401
  31. Ozbakkaloglu, T. and Oehlers, D.J. (2008), "Concrete-filled square and rectangular FRP tubes under axial compression", J. Compos. Construct., 12(4), 469-477. https://doi.org/10.1061/(ASCE)1090-0268(2008)12:4(469)
  32. Ozbakkaloglu, T. and Saatcioglu, M. (2006), "Seismic behavior of high-strength concrete columns confined by fiber-reinforced polymer tubes", J. Compos. Construct., 10(6), 538-549. https://doi.org/10.1061/(ASCE)1090-0268(2006)10:6(538)
  33. Ozbakkaloglu, T. and Vincent, T. (2013), "Axial compressive behavior of circular high-strength concretefilled FRP tubes", J. Compos. Construct., 18(2), 04013037.
  34. Patel, V.I., Liang, Q.Q. and Hadi, M.N.S. (2015), "Biaxially loaded high-strength concrete-filled steel tubular slender beam-columns, Part II: Parametric study", J. Construct. Steel Res., 110, 200-207. https://doi.org/10.1016/j.jcsr.2012.03.029
  35. Yang, Z.J. (2010), "Behavior of high strength concrete filled square steel Tubes slender high columns with inner CFRP circular tube under bi-axial eccentric loading", Master Thesis; Shenyang Jianzhu University, Shenyang, China.
  36. Yang, H., Lam, D. and Gardner, L. (2008), "Testing and analysis of concrete-filled elliptical hollow sections", Eng. Struct., 30(12), 3771-3781. https://doi.org/10.1016/j.engstruct.2008.07.004
  37. Yu, Z.W. and Ding, F.X. (2003), "Unified calculation method of compressive mechanical properties of concrete", J. Build. Struct., 24(4), 41-46.
  38. Yu, T. and Teng, J.G (2012), "Behavior of hybrid FRP-concrete-steel double-skin tubular columns with a square outer tube and a circular inner tube subjected to axial compression", J. Compos. Construct., 17(2), 271-279. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000331
  39. Yu, T., Wong, Y.L., Teng, J.G., Dong, S.L. and Lam, E.S. (2006), "Flexural behavior of hybrid FRPconcrete-steel double-skin tubular members", J. Compos. Construct., 10(5), 443-452. https://doi.org/10.1061/(ASCE)1090-0268(2006)10:5(443)
  40. Yu, T., Zhang, B., Cao, Y.B. and Teng, J.G. (2012), "Behavior of hybrid FRP-concrete-steel double-skin tubular columns subjected to cyclic axial compression", Thin-Wall. Struct., 61, 196-203. https://doi.org/10.1016/j.tws.2012.06.003
  41. Yu, T., Hu, Y.M. and Teng, J.G. (2014), "FRP-confined circular concrete-filled steel tubular columns under cyclic axial compression", J. Construct. Steel Res., 94, 33-48. https://doi.org/10.1016/j.jcsr.2013.11.003
  42. Zhang, B., Yu, T. and Teng, J.G. (2014), "Behavior of concrete-filled FRP tubes under cyclic axial compression", J. Compos. Construct., 19(3), 04014060. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000523
  43. Zhang, B., Teng, J.G. and Yu, T. (2015), "Experimental behavior of hybrid FRP-concrete-steel double-skin tubular columns under combined axial compression and cyclic lateral loading", Eng. Struct., 99, 214-231. https://doi.org/10.1016/j.engstruct.2015.05.002
  44. Zhu, M., Liu, J., Wang, Q. and Feng, X. (2010), "Experimental research on square steel tubular columns filled with steel-reinforced self-consolidating high-strength concrete under axial load", Eng. Struct., 32(8), 2278-2286. https://doi.org/10.1016/j.engstruct.2010.04.002

Cited by

  1. Axial compressive behavior of special-shaped concrete filled tube mega column coupled with multiple cavities vol.23, pp.6, 2016, https://doi.org/10.12989/scs.2017.23.6.633
  2. Experimental study on the seismic performance of concrete filled steel tubular laced columns vol.26, pp.6, 2018, https://doi.org/10.12989/scs.2018.26.6.719