Advanced Steel Construction

Vol. 14, No. 2, pp. 308-323 (2018)


NUMERICAL ANALYSIS OF PLAIN AND

STEEL FIBER REINFORCED CONCRETE FILLED

STEEL TUBULAR SLENDER COLUMN

 

Kingsley U. Ukanwa1,*, Charles G. Clifton1, James B.P. Lim1, Stephen Hicks2 and Umesh K. Sharma3

1 Department of Civil Engineering, The University of Auckland, Auckland, New Zealand

2 New Zealand Heavy Engineering Research Association, HERA House, Auckland, New Zealand

3 Department of Civil Engineering, India Institute of Technology, Roorkee, India

*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 8 August 2016; Revised: 20 April 2017; Accepted: 14 May 2017

 

DOI:10.18057/IJASC.2018.14.2.10

 

View Article   Export Citation: Plain Text | RIS | Endnote

ABSTRACT

Concrete filled steel tube columns (CFST) have many potentials which include; high seismic resistance, high load bearing capacity, and fire resistance without external protection. Some major projects worldwide has adopted the use of this type of column member extensively, for columns in both the gravity systems and the seismic resisting systems. Experimental tests performed on concrete filled steel tube columns at ambient temperature indicates that, the use of steel fibre reinforced concrete infill affects the crack width propagation of the concrete. This paper presents an advanced 3D numerical model which predicts the behaviour of a CFST column filled with steel fibre reinforced concrete, taking into account the increased tensile strength of the concrete which affects the column ductility. For columns subjected to compression loading only, it is recommended to use a high strength concrete, and also increase the thickness of the steel tube rather than using a steel tube with a higher yield strength. For slender square columns loaded under large eccentricity, it is recommended to use an e/D (eccentricity/depth) ratio value less than 0.5 for design purposes, to avoid the premature fracture of the loaded end of the column having smaller steel tube thickness.

 

KEYWORDS

Concrete filled tubular columns, steel fibre reinforced concrete, finite element analysis, composite column, square hollow steel section


REFERENCES

[1] Han, L, Zhao, X. and Lu, H., "Concrete-filled Tubular Members and Connections", CRC Press. 2014.

[2] Kitada, T., "Ultimate Strength and Ductility of State-of-the-art Concrete-filled Steel Bridge Piers in Japan", Eng. Struct., 1998, Vol. 20, No. 4-6, pp. 347-54.

[3] Brauns, J., "Analysis of Stress State in Concrete-filled Steel Column", Journal of Constructional Steel Research ", 1999, Vol. 49, No. 2, pp.189-96.

[4] Ellobody, E., Young, B. and Lam, D., "Behaviour of Normal and High Strength Concrete-filled Compact Steel Tube Circular Stub Columns", Journal of Constructional Steel Research, 2006, Vol. 62, No. 7, pp. 706-15.

[5] Ellobody, E., "Numerical Modelling of Fibre Reinforced Concrete-filled Stainless Steel Tubular Columns", Thin-Walled Structures, 2013, Vol. 63, pp. 1-12.

[6] Zhao, Lok, Li, and Lim, "Behavior of Steel Fiber Reinforced Concrete under Dynamic Load, Proc., 4th Asia-Pacific Conf. on Shock and Impact Loads on Structures: CI-Premier, Singapore, 2001.

[7] Zeghiche, J. and Chaoui, K., "An Experimental Behaviour of Concrete-filled Steel Tubular Columns", Journal of Constructional Steel Research, 2005, Vol. 61, No. 1, pp. 53-66.

[8] Johansson, M. and Gylltoft, K., "Structural Bhavior of Slender Circular Steel-concrete Composite Columns under Various Means of Load Application", Steel and Composite Structures 2001, Vol. 1, No. 4, pp. 393-410.

[9] Eltobgy, H.H., "Structural Design of Steel Fibre Reinforced Concrete in-filled Steel Circular Columns", Steel and Composite Structures, 2013, Vol. 14, No. 3, pp. 267-82.

[10] Gopal, S.R. and Manoharan, P.D., "Experimental Behaviour of Eccentrically Loaded Slender Circular Hollow Steel Columns in-filled with Fibre Reinforced Concrete", Journal of Constructional Steel Research, 2006, Vol. 62, No. 5, pp. 513-20.

[11] Tokgoz, S. and Dundar, C., "Experimental Study on Steel Tubular Columns in-filled with Plain and Steel Fiber Reinforced Concrete", Thin-Walled Structures, 2010, Vol. 48, No. 6, pp.414-22.

[12] CEN. EN 1994-1-1, Eurocode 4: Design of Composite Steel and Concrete Structures–Part 1-1: General Rules and Rules for Buildings, Comité Européen de Normalisation 2005.

[13] Simulia, D. ABAQUS 6.13 User’s Manual. Dassault Systems, Providence, RI 2013.

[14] Dai, X. and Lam, D., "Numerical Modelling of the Axial Compressive Behaviour of Short Concrete-filled Elliptical Steel Columns", Journal of Constructional Steel Research, 2010, Vol. 66, No. 7, pp. 931-42.

[15] ACI B. 318-Building Code Requirements for Reinforced Concrete and Commentary, American Concrete Institute International 1999.

[16] Mander, J.B., Priestley, M.J. and Park, R., "Theoretical Stress-strain Model for Confined Concrete", J. Struct. Eng., 1988, Vol. 114, No. 8, pp. 1804-26.

[17] Richart, F.E., Brandtzaeg, A. and Brown, R.L., "A Study of the Failure of Concrete under Combined Compressive Stresses, 1928.

[18] Hu, H., Huang, C., Wu, M., Wu, Y., "Nonlinear Analysis of Axially Loaded Concrete-filled Tube Columns with Confinement Effect", J. Struct. Eng., 2003, Vol. 129, No. 10, pp. 1322-9.

[19] CEN E. Eurocode 2: Design of Concrete Structures, European Committee for Standardization, 1992.

[20] Saenz, LP., "Equation for the Stress-strain Curve of Concrete", ACIJour. 1964, Vol. 61, No. 9, pp. 1229-35.

[21] Hu, H. and Schnobrich, W.C., "Constitutive Modeling of Concrete by Using Nonassociated Plasticity", J. Mater. Civ. Eng., 1989, Vol. 1, No. 4, pp. 199-216.

[22] Musmar, M., "Tensile Strength of Steel Fiber Reinforced Concrete", Contemporary Engineering Sciences, 2013, Vol. 6, No. 5, pp. 225-37.