DOI QR코드

DOI QR Code

Axial behavior of RC columns strengthened with SCC filled square steel tubes

  • Lu, Yi-Yan (School of Civil Engineering, Wuhan University) ;
  • Liang, Hong-Jun (School of Civil Engineering, Wuhan University) ;
  • Li, Shan (School of Civil Engineering, Wuhan University) ;
  • Li, Na (School of Civil Engineering, Wuhan University)
  • 투고 : 2014.06.20
  • 심사 : 2014.09.03
  • 발행 : 2015.03.25

초록

Self-compacting Concrete (SCC) Filled Square steel Tubes (SCFST) was used to strengthen square RC columns. To establish the efficiency of this strengthening method, 17 columns were tested under axial compression loading including 3 RC columns without any strengthening (WRC), 1 RC column strengthened with concrete jacket (CRC), 13 RC columns strengthened with self-compacting concrete filled square steel tubes (SRC). The experimental results showed that the use of SCFST is interesting since the ductility and the bearing capacity of the RC columns are greatly improved. The improvement ratio is significantly affected by the nominal wall thickness of steel tubes (t), the strength grade of strengthening concrete (C), and the length-to-width ratio (L / B) of the specimens. In order to quantitatively analyze the effect of these test parameters on axial loading behavior of the SRC columns, three performance indices, enhancement ratio (ER), ductility index (DI), and confinement ratio (CR), were used. The strength of the SRC columns obtained from the experiments was then employed to verify the proposed mode referring to the relevant codes. It was found that codes DBJ13-51 could relatively predict the strength of the SRC columns accurately, and codes AIJ and BS5400 were relatively conservative.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation

참고문헌

  1. Aboutaha, R.S. and Machado, R.I. (1999),"Seismic resistance of steel-tubed high-strength reinforcedconcrete columns", J. Struct. Eng., ASCE, 125(5), 485-494. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:5(485)
  2. Aboutaha, R.S., Engelhardt, M.D., Jirsa, J.O. and Kreger, M.E. (1999a), "Experimental investigation of seismic repair of lap splice failures in damaged concrete columns", ACI Struct. J., 96(2), 297-306.
  3. Aboutaha, R.S., Engelhardt, M.D., Jirsa, J.O. and Kreger, M.E. (1999b), "Rehabilitation of shear critical concrete columns by use of rectangular steel jackets", ACI Struct. J., 96(1), 68-78.
  4. Abedi, K., Afshin, H. and Shirazi, M.R.N. (2010), "Numerical study on the seismic retrofitting of reinforced concrete columns using rectified steel jackets", Asian J. Civil Eng., 11(2), 219-240.
  5. AIJ (2008), Recommendations for design and construction of concrete filled steel tubular structures, Architectural Institute of Japan, Tokyo, Japan.
  6. Bai, Y.L., Dai, J.G. and Teng, J.G. (2014), "Cyclic compressive behavior of concrete confined with large rupture strain FRP composites", J. Compos. Construct., ASCE, 18(1), 04013025. DOI: 10.1061/(ASCE)CC.1943-5614.0000386
  7. British Standard (2005), BS5400, Steel, concrete and composite bridges; part 5: Code of practice for design of composite bridges, British Standard Institute.
  8. Chang, X., Huang, C.K., Jiang, D.C. and Song, Y.C. (2009), "Push-out test of pre-stressing concrete filled circular steel tube columns by means of expansive cement", Constr. Build Mater., 23(1), 491-497. https://doi.org/10.1016/j.conbuildmat.2007.10.021
  9. Chen, J.F. and Teng, J.G. (2003), "Shear capacity of fiber-reinforced polymer-strengthened reinforced concrete beams: Fiber reinforced polymer rupture", J. Struct. Eng.., 129(5), 615-625. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:5(615)
  10. Colomb, F., Tobbi, H., Ferrier, E. and Hamelin, P. (2008), "Seismic retrofit of reinforced concrete short columns by CFRP materials", Compos. Struct., 82(4), 475-487. https://doi.org/10.1016/j.compstruct.2007.01.028
  11. Dai, J.G., Bai, Y.L. and Teng, J.G. (2011), "Behavior and modeling of concrete confined with FRP composites of large deformability", J. Compos. Construct., 15(6), 963-973. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000230
  12. DBJ13-51 (2003), Technical specification for concrete-filled steel tubular structures, Fuzhou, China. [In Chinese]
  13. Dundu, M. (2012), "Compressive strength of circular concrete filled steel tube columns", Thin-Wall. Struct., 56(6), 62-70.
  14. European Committee for Standardization (2004), EN 1994-1-1: 2004, Design of composite steel and concrete structures; Part 1-1: General rules and rules for buildings, London, UK.
  15. Han, L.H. (2000), "Tests on concrete filled steel tubular columns with high slenderness ratio", Adv Struct. Eng., 3(4), 337-344. https://doi.org/10.1260/1369433001502265
  16. Han, L.H. and Yao, G.H. (2004),"Experimental behaviour of thin-walled hollow structural steel (HSS) columns filled with self-Compacting concrete (SCC)", Thin-Wall. Struct., 42(9), 1357-1377. https://doi.org/10.1016/j.tws.2004.03.016
  17. Holschemacher, K. (2004), "Hardened material properties of self-compacting concrete", J. Civil Eng. Manag., 10(4), 261-266. https://doi.org/10.1080/13923730.2004.9636318
  18. Loser, R. and Leemann, A. (2009), "Shrinkage and restrained shrinkage cracking of self-compacting concrete compared to conventionally vibrated concrete", Mater. Struct., 42(1), 71-82. https://doi.org/10.1617/s11527-008-9367-9
  19. Miller, E.A. (2006), "Experimental research of reinforced concrete column strengthening methods", Master Thesis, The Ohio State University, Columbus, OH, USA, 24-30, pp. 222-230.
  20. Muciaccia, G., Giussani, F., Rosati, G. and Mola, F. (2011), "Response of self-compacting concrete filled tubes under eccentric compression", J. Constr. Steel Res., 67(5), 904-916. https://doi.org/10.1016/j.jcsr.2010.11.003
  21. Priestley, M.J.N., Seible, F., Xiao, Y. and Verma, R. (1994a), "Steel jacket retrofitting of reinforced concrete bridge columns for enhanced shear strength-part 1: Theoretical considerations and test design", ACI Struct. J., 91(4), 394-405.
  22. Priestley, M.J.N., Seible, F., Xiao, Y. and Verma, R. (1994b), "Steel jacket retrofitting of reinforced concrete bridge columns for enhanced shear strength-part 2: Test results and comparison with theory", ACI Struct. J., 91(5), 537-551.
  23. Sezen, H. and Miller, E.A. (2011), "Experimental evaluation of axial behavior of strengthened circular reinforced-concrete columns", J. Bridge Eng., ASCE, 16(2), 238-247. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000143
  24. Teng, J.G., Chen, J.F., Smith, S.T. and Lam, L. (2003), "Behaviour and strength of FRP-strengthened RC structures: a state-of-the-art review", Proceedings of the ICE-Structures and Buildings, 156(1), 51-62.
  25. Wang, M.H. (2011), "Experimental study on axial-compression reinforced concrete column strengthened by circular steel tube", Appl. Mech. Mater., 94-96, 1261-1270. https://doi.org/10.4028/www.scientific.net/AMM.94-96.1261
  26. Xiao, Y. and Wu, H. (2003), "Strengthening of reinforced concrete columns using partially stiffened steel jackets", J. Struct. Eng., 129(6), 725-732. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:6(725)
  27. Yu, Q., Tao, Z., Wu, Y.X. (2008), "Experimental behaviour of high performance concrete-filled steel tubular columns", Thin-Wall. Struct., 46(4), 362-370. https://doi.org/10.1016/j.tws.2007.10.001
  28. Zhou, M., Li, J.W. and Duan, J.M. (2012), "Experimental study on the axial loading tests of RC columns strengthened with steel tube", Appl. Mech. Mater., 204-208, 2878-2882. https://doi.org/10.4028/www.scientific.net/AMM.204-208.2878

피인용 문헌

  1. Effect of the Outer Diameter on the Behavior of Square RC Columns Strengthened with Self-Compacting Concrete Filled Circular Steel Tube pp.2093-6311, 2018, https://doi.org/10.1007/s13296-018-0185-9
  2. Axial Behaviour of Slender RC Circular Columns Strengthened with Circular CFST Jackets vol.2018, pp.1687-8094, 2018, https://doi.org/10.1155/2018/7923575
  3. Experimental Study and Confinement Analysis on RC Stub Columns Strengthened with Circular CFST Under Axial Load pp.2093-6311, 2018, https://doi.org/10.1007/s13296-018-0054-6
  4. Behavior of steel-concrete jacketed corrosion-damaged RC columns subjected to eccentric load vol.29, pp.6, 2015, https://doi.org/10.12989/scs.2018.29.6.689