Browse > Article
http://dx.doi.org/10.12989/scs.2012.13.3.277

Numerical analysis of the axially loaded concrete filled steel tube columns with debonding separation at the steel-concrete interface  

Chen, Shiming (School of Civil Engineering, Tongji University)
Zhang, Huifeng (School of Civil Engineering, Tongji University)
Publication Information
Steel and Composite Structures / v.13, no.3, 2012 , pp. 277-293 More about this Journal
Abstract
The interaction between steel tube and concrete core is the key design considerations for concrete-filled steel tube columns. In a concrete-filled steel tube (CFST) column, the steel tube provides confinement to the concrete core which permits the composite action among the steel tube and the concrete. Due to construction faults and plastic shrinkage of concrete, the debonding separation at the steel-concrete interface weakens the confinement effect, and hence affects the behaviour and bearing capacity of the composite member. This study investigates the axial loading behavior of the concrete filled circular steel tube columns with debonding separation. A three-dimensional nonlinear finite element model of CFST composite columns with introduced debonding gap was developed. The results from the finite element analysis captured successfully the experimental behaviours. The calibrated finite element models were then utilized to assess the influence of concrete strength, steel yield stress and the steel-concrete ratio on the debonding behaviour. The findings indicate a likely significant drop in the load carrying capacity with the increase of the size of the debonding gap. A design formula is proposed to reduce the load carrying capacity with the presence of debonding separation.
Keywords
debonding separation; concrete filled steel tube; axial compression; load carrying capacity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 American Concrete Institute (ACI), Building code requirements for structural concrete and commentary. ACI Committee 318-11, Michigan, 2011.
2 American Institute of Steel Construction (AISC), Specification for Structural Steel Buildings (ANSI/AISC 360-10). Illinois, 2010.
3 Architectural Institute of Japan (AIJ), Recommendations for design and construction of concrete filled steel tubular structures. Tokyo, 1997.
4 Bahrami, A., Wan Badaruzzaman, W.H. and Osman, S.A. (2011), "Nonlinear analysis of concrete-filled steel composite columns subjected to axial loading", Struct. Eng. Mech., 39(3), 383-398.   DOI
5 Choi, K.K. and Xiao, Y. (2010), "Analytical studies of concrete-filled circular steel tubes under axial compression", J. Struct. Eng., 136(5), 565-573.   DOI   ScienceOn
6 Ellobody, E., Young, B. and Lam, D. (2006), "Behavior of normal and high strength concrete-filled compact steel tube circular stub columns", J. Constr. Steel Res., 62(6), 706-715.   DOI
7 Eurocode 4 (EC4). Design of steel and concrete structures-Part1-1:general rules and rules for building. EN 1994-1-1: 2004. Brussels, European Committee for Standardization. 2004.
8 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(2), 182-193.   DOI   ScienceOn
9 Hajjar, J.F. (2003), "Concrete-filled steel tube columns under earthquake loads", Progress in Structural Engineering and Materials, 3(2), 72-81.
10 Han, L.H., Liu, W. and Yang, Y.F. (2008), "Behavior of concrete-filled steel tubular stub columns subjected to axially local compression", J. Constr. Steel Res., 64(4), 377-387.   DOI   ScienceOn
11 Han, L.H. and Yao, G.H. (2003), "Influence of concrete compaction on the strength of concrete-filled steel RHS columns", J. Constr. Steel Res., 59(6), 751-767.   DOI   ScienceOn
12 Han, L.H. and Li, W. (2011), "New development on concrete filled steel Tubular (CFST) structures in China", Proceedings of the 2011 World Congress on Advances in Structural Engineering and Mechanics (ASEM'11+) Seoul, Korea, September.
13 Hu, H.T., Huang, C.S., Wu, M.S. and Wu, Y.M. (2003), "Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect", J. Struct. Eng., 129(10), 1322-1329.   DOI   ScienceOn
14 Liang, K.F. (2008), "Research on the behaviors of concrete-filled steel tube with gaps under load", [D]. PhD thesis of Hunan University, Hunan China.
15 Liang, Q.Q. and Fragomeni, S. (2010), "Nonlinear analysis of circular concrete-filled steel tubular short columns under eccentric loading", J. Constr. Steel Res., 66(2), 159-169.   DOI   ScienceOn
16 Liu, X.P., Sun, Z., Huang, H.Y., Tang, S. and Tang, C.H. (2011), "Research on mechanical properties of separation concrete-filled steel tubes Subjected to eccentric compression on non-separation side", Appl. Mech. Mater., 117-119, 887-892.   DOI
17 Mu, T., Fan, B. and Xie, B. (2007), "Influence of de-fill on performance of concrete-filled steel tubular columns", Proceedings of the 5th International Conference on arch bridges, Madeira, Portugal, September.
18 Roeder, C.W., Cameron, B. and Brown, C.B. (1999), "Composite action in concrete filled tubes", J. Struct. Eng., 125(5), 477-484.   DOI   ScienceOn
19 Schneider, S.P. (1998), "Axially loaded concrete-filled steel tubes", J. Struct. Eng., 124(10), 1125-1138.   DOI   ScienceOn
20 Uy, B. (1998), "Concrete-filled fabricated steel box columns for multistory buildings", Progress in Structural Engineering and Materials, 1(2), 150-158.   DOI   ScienceOn
21 Uwe, S., Nabil, F. and Thomas, L. (2010), "Numerical analyses of the force transfer in Concrete-Filled Steel Tube columns", Struct. Eng. Mech., An Int'l Journal, 35(2), 241-256.   DOI
22 Xu, T.F., Xiang, T.Y., Zhao, R.D. and Zhan, Y.L. (2010), "Nonlinear finite element analysis of circular Concrete- Filled Steel Tube structures", Struct. Eng. Mech., An Int'l Journal, 35(3), 315-333.   DOI
23 Xue, J.Q., Chen, B.C. and Briseghella, B. (2010), "Experimental research on debonding in concrete-filled steel tubes columns subjected to eccentric loading", IABSE Symposium Report, IABSE Symposium, Venice.
24 Xue, J.Q., Briseghella, B. and Chen, B.C. (2012), "Effects of debonding on circular CFST stub columns" J. Constr. Steel Res., 69(1), 64-76.   DOI   ScienceOn
25 Yin, X.W. and Lu, X.L. (2010), "Study on push-out test and bond stress-slip relationship of circular concrete filled steel tube" , Steel. Compos. Struct., An Int'l Journal, 10(4), 317-329.
26 Zhong, S.T. (2006), "Application and research achievement of concrete filled steel tubular (CFST) structures in China", Proceeding of the 8th International Conference on Steel-Concrete Composite and Hybrid Structures, Harbin, China, 12-14 August.