Behaviour of Concrete Filled Steel Tubes

Sangeetha P., Ashwin Muthuraman R.M., Dachina G., Dhivya M., Janani S., Sai Madumathi


Concrete filled steel tubular columns are preferred due to their excellent static and dynamic resistant properties such as high strength, high ductility and large energy absorption capacity. The comparison of the ultimate strength of CFST with Hollow steel tube, RCC and the bond strength between concrete and the steel was done both experimentally and analytically using ANSYS. A total of 18 specimens were cast, out of which ultimate strength was determined for 13 specimens and bond strength was observed for 5 specimens using push out test. Both experimental and analytical observations using ANSYS were carried on a cylinder of height 460mm and a diameter of 113mm. The grade of concrete used for infill is M30. The tests were carried on an Ultimate Testing Machine. The ultimate strength of CFST, RCC and HST were compared and CFST having the advantages of both concrete and steel is found to behave better and average bond strength ranges between 0.7 to 1.1N/mm\(^2\).


CFST; Load-strain; Push out test; ANSYS

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EN 1994 — Part 2, Eurocode 4: Design of composite steel and concrete structures, https: //

B. Evirgen, A. Tuncan and K. Taskin, Structural behaviour of concrete filled steel tubular sections under axial compression, Thin Walled Structures 80 (2014), 46 – 56.

P. Gupta, S.K. Sarda and M.S. Kumar, Experimental and computational study of concrete filled steel tubular columns under axial loads, Journal of Constructional Steel Research 63 (2007), 182 – 193.

K. Sakino, H. Nakahara, S. Morino and I. Nishiyama, Behaviour of centrally loaded concrete-filled steel-tube short columns, Journal of Structural Engineering 130 (2) (2004), 180 – 188.

Khodaie and Nahmat, Effect of the concrete strength on the concrete-steel bond in concrete filled steel tubes, Journal of the Persian Gulf (Marine Science) 4 (11) (2013), 9 – 16.

L. Kwasniewski, E. Szmigiera and M. Siennicki, Finite element modelling of composite concrete steel sections, Archives of Civil Engineering 4 (2012), 373 – 388.

C.W. Roeder, B. Cameron and C.B. Brown, Composite action in concrete filled tubes, Journal of Structural Engineering 125 (5) (1999), 477 – 484.

S.P. Schneider, Axially loaded concrete filled steel tubes, Journal of Structural Engineering 12 (1998), 1125 – 1138.

Z. Tao, Z.B. Wang and Q. Yu, Finite element modelling of concrete filled steel tubes columns under axial compression, Journal of Constructional Steel Research 89 (2013), 121 – 131.

T.-Y. Song, Z. Tao, B. Uy and L.-H. Han, Bond strength in full-scale concrete-filled steel tubular columns, in Proceeding of World congress on Advances in Structural Engineering and Mechanics, Incheon, Korea, pp. 25 – 29 (2015).


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