Browse > Article
http://dx.doi.org/10.12989/sem.2010.35.2.241

Numerical analyses of the force transfer in concrete-filled steel tube columns  

Starossek, Uwe (Structural Analysis and Steel Structures Institute, Hamburg University of Technology (TUHH))
Falah, Nabil (Structural Analysis and Steel Structures Institute, Hamburg University of Technology (TUHH))
Lohning, Thomas (Structural Analysis and Steel Structures Institute, Hamburg University of Technology (TUHH))
Publication Information
Structural Engineering and Mechanics / v.35, no.2, 2010 , pp. 241-256 More about this Journal
Abstract
The interaction between steel tube and concrete core is the key issue for understanding the behavior of concrete-filled steel tube columns (CFTs). This study investigates the force transfer by natural bond or by mechanical shear connectors and the interaction between the steel tube and the concrete core under three types of loading. Two and three-dimensional nonlinear finite element models are developed to study the force transfer between steel tube and concrete core. The nonlinear finite element program ABAQUS is used. Material and geometric nonlinearities of concrete and steel are considered in the analysis. The damage plasticity model provided by ABAQUS is used to simulate the concrete material behavior. Comparisons between the finite element analyses and own experimental results are made to verify the finite element models. A good agreement is observed between the numerical and experimental results. Parametric studies using the numerical models are performed to investigate the effects of diameterto-thickness ratio, uniaxial compressive strength of concrete, length of shear connectors, and the tensile strength of shear connectors.
Keywords
composite columns; concrete-filled steel tube; bond stress; load transfer; mechanical shear connectors; confinement; test; finite element analysis; parametric study;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 3  (Related Records In Web of Science)
Times Cited By SCOPUS : 7
연도 인용수 순위
1 Morishita, Y., Tomii, M. and Yoshimura, K. (1979), "Experimental studies on bond strength in concrete-filled circular steel tubular columns subjected to axial loads", Trans. Japan Concrete Inst. Tokyo, 1, 351-358.
2 Roeder, C.W., Chmielowski, R. and Brown, C.B. (1999), "Shear connector requirements for embedded steel sections", J. Struct. Eng-ASCE, 125(2), 142-152.   DOI   ScienceOn
3 Roeder, C.W., Cameron, B. and Brown, C.B. (1999), "Composite action in concrete-filled tubes", J. Struct. Eng-ASCE, 125(5), 477-484.   DOI   ScienceOn
4 Shakir-Khalil, H. (1991), "Bond strength in hollow concrete-filled steel hollow sections", Proceedings of the International Conference on Steel and Aluminum Structures. Composite Steel Structures, Singapore.
5 Shakir-Khalil, H. (1993a), "Push-out strength of concrete-filled steel hollow sections", Struct. Eng., 71(13), 230-233, 243.
6 Ellobody, E. (2007), "Nonlinear behavior of concrete-filled stainless steel stiffened slender tube columns", Thin Wall. Struct., 45(3), 259-273.   DOI   ScienceOn
7 Falah, N. (2008), "The interaction of steel tube and concrete core in concrete-filled steel tube columns", Doctoral Thesis in Preparation.
8 HKS (2007), ABAQUS/Standard User's Manual, Version 6.7, Hibbit, Karlsson & Sorensen, Inc., Pawtucket, USA.
9 Johansson, M. (2003), "Composite action in connection regions of concrete-filled steel tube columns", Steel Compos. Struct., 3(1), 47-64.   DOI
10 Johansson, M., Claeson, C., Akesson, M. and Gylltoft, K. (2000), "Stuctural behavior of circular composite columns under various means of load application", Proceeding of 6th ASCCS Conference, Los Angeles, USA.
11 Lam, D. and El-Lobody, E. (2005), "Behavior of head stud shear connectors in composite beam", J. Struct. Eng-ASCE, 131(1), 96-107.   DOI   ScienceOn
12 Lee, J. and Fenves, G.L. (1998), "Plastic-damage model for cyclic loading of concrete structures", J. Eng. Mech., 124(8), 892-900.   DOI   ScienceOn
13 Lubliner, J., Oliver, J., Oller, S. and Onate, E. (1989), "A plastic-damaged model for concrete", Int. J. Solids Struct., 25(3), 299-329.   DOI   ScienceOn
14 Starossek, U., Falah, N. and Löhning, T. (2008), "Numerical analyses of the force transfer in concrete-filled steel tube columns", Proceedings of 4th International Conference on Advances in Structural Engineering and Mechanics, Jeju, Korea, May.
15 Shakir-Khalil, H. (1993b), "Resistance of concrete-filled steel hollow tubes to pushout forces", Struct. Eng., 71(13), 234-243.
16 Schneider, S.P. (1998), "Axially loaded concrete-filled steel tubes", J. Struct. Eng-ASCE, 124(10), 1125-1138.   DOI   ScienceOn
17 Shams, M. and Saadeghvaziri, M.A. (2000), "Non-linear behavior of concrete-filled steel tubular columns under axial and lateral loadings", Proceeding of 6th ASCCS Conference, Los Angeles, USA.
18 Starossek, U. and Falah, N. (2008), "Force transfer in concrete-filled steel tube columns", Proceedings of 5th European Conference on Steel and Composite Structures, Graz, Austria, September.
19 Starossek, U. and Falah, N. (2008), "The interaction of steel tube and concrete core in concrete-filled steel tube columns", Proceedings of 12th International Symposium on Tubular Structures, Shanghai, China, October.
20 Virdi, K.S. and Dowling, P.J. (1980), "Bond strength in concrete-filled steel tubes", IABSE, 33(80), 125-139.
21 Begum, M., Driver, G.R. and Elwi, E.A. (2007), "Finite-element modeling of partially encased composite columns using the dynamic explicit method", J. Struct. Eng-ASCE, 133(3), 326-334.   DOI   ScienceOn
22 Bussler, T. (2007), "Numerische Untersuchungen zum Tragverhalten von Schubbolzen in Verbundstutzen (Numerical investigations on the structural behavior of shear studs in composite columns)", Diplomarbeit, Hamburg University of Technology, Germany.
23 Hu, H.T., Huang, C.S. and Wu, M.H. (2003), "Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect", J. Struct. Eng-ASCE, 129(10), 1322-1329.   DOI   ScienceOn
24 Chen, W.F. (1982), Plasticity in Reinforced Concrete, McGraw-Hill, New York.