Experimental study on steel tubular columns in-filled with plain and steel fiber reinforced concrete

An experimental investigation on the structural behaviour of steel tubular columns in-filled with plain and steel fiber reinforced concrete is presented in this study. A total of 16 concrete-filled steel tubular columns were constructed and tested subjected to biaxial bending and short-term axial load. The main variables considered in the test study were the cross section, slenderness, concrete compressive strength and the load eccentricity. In the presented study, a theoretical method for the prediction of ultimate strength capacity and load-deflection curves of concrete filled steel tube columns is proposed. In the analysis procedure, the nonlinear behaviour of the materials is considered and the slenderness effect has been taken into account. The experimental ultimate strength capacities and load-deflection curves of both plain and steel fiber concrete-filled tube columns have been compared with the analysis results and discussed in the paper. The results indicate that the addition of steel fibers in core concrete has considerable effect on the behaviour of concrete-filled steel tube columns.

[1]  Dalin Liu.  Behaviour of high strength rectangular concrete-filled steel hollow section columns under eccentric loading , 2004 .

[2]  Lin-Hai Han,et al.  Tests on Stub Columns of Concrete-filled RHS Sections , 2002 .

[3]  Brian Uy,et al.  Local and post-local buckling of concrete filled steel welded box columns , 1998 .

[4]  B V Rangan.  Strength of Reinforced Concrete Slender Columns , 1990 .

[5]  Tsong Yen,et al.  Experimental study on rectangular CFT columns with high-strength concrete , 2007 .

[6]  B. Vijaya Rangan,et al.  Tests on High-Strength Concrete-Filled Steel Tubular Columns , 1999 .

[7]  Zhong Tao,et al.  Experimental behaviour of high performance concrete-filled steel tubular columns , 2008 .

[8]  Ehab Ellobody,et al.  Nonlinear behavior of concrete-filled stainless steel stiffened slender tube columns , 2007 .

[9]  B. Uy.  Stability and ductility of high performance steel sections with concrete infill , 2008 .

[10]  Kenji Sakino,et al.  ELASTO-PLASTIC BEHAVIOR OF CONCRETE FILLED SQUARE STEEL TUBULAR BEAM-COLUMNS , 1979 .

[11]  Rodrigo Barreto Caldas,et al.  Numerical Analysis of Composite Steel-Concrete Columns of Arbitrary Cross Section , 2005 .

[12]  B. Uy,et al.  Behaviour and design of fabricated high strength steel columns subjected to biaxial bending. Part 2: Analysis and design codes , 2006 .

[13]  P. Devadas Manoharan,et al.  Experimental behaviour of eccentrically loaded slender circular hollow steel columns in-filled with fibre reinforced concrete , 2006 .

[14]  Brian Uy,et al.  Local and Postlocal Buckling of Fabricated Steel and Composite Cross Sections , 2001 .

[15]  N. E. Shanmugam,et al.  Nonlinear Analysis of In-Filled Steel-Concrete Composite Columns , 2002 .

[16]  K. F. Chung,et al.  Composite column design to Eurocode 4 : based on DD ENV 1994-1-1: 1994 Eurocode 4: design of composite steel and concrete structures: part 1.1: general rules and rules for buildings , 1994 .

[17]  Qing Quan Liang.  Nonlinear analysis of short concrete-filled steel tubular beam–columns under axial load and biaxial bending , 2008 .

[18]  J. Mander,et al.  Theoretical stress strain model for confined concrete , 1988 .

[19]  Toshiaki Fujimoto,et al.  BEHAVIOR OF ECCENTRICALLY LOADED CONCRETE-FILLED STEEL TUBULAR COLUMNS , 2004 .

[20]  M. Joyce,et al.  Strength of Eccentrically Loaded Slender Steel Tubular Columns Filled With High-Strength Concrete , 1992 .

[21]  Dalin Liu.  Behaviour of eccentrically loaded high-strength rectangular concrete-filled steel tubular columns , 2006 .

[22]  Serkan Tokgoz,et al.  Experimental tests on biaxially loaded concrete-encased composite columns , 2008 .

[23]  Brian Uy,et al.  Behaviour and design of fabricated high strength steel columns subjected to biaxial bending. Part 1: Experiments , 2006 .

[24]  Brian Uy,et al.  Strength of concrete filled steel box columns incorporating local buckling , 2000 .

[25]  Brian Uy,et al.  Axial compressive strength of short steel and composite columns fabricated with high strength steel plate , 2001 .

[26]  Mark A. Bradford,et al.  Elastic local buckling of steel plates in composite steel-concrete members , 1996 .

[27]  Qing Quan Liang.  Strength and ductility of high strength concrete-filled steel tubular beam-columns , 2009 .

[28]  Lin-Hai Han,et al.  Experimental behaviour of concrete-filled stiffened thin-walled steel tubular columns , 2007 .