Buckling Analysis of Belly Shaped Composite Column


  • S Kesavan
  • S Ramesh
  • Alexabhishek .
  • J S.Sudarsan
  • P Vanamoorthy kumaran
  • G Muthukumar






Non Prismatic column, Encased composite column, Buckling, Load Multiplier Factor.


The study of Non prismatic column is designed to minimize the volume of material in the column by changing its shape, the column is subject to both buckling and strength constraints under axial compression load. The belly column is designed as Encased Composite column to improve the strength and ductility of column. The effective use of material through optimal shape of the column. Five models have been created in ANSYS WORKBENCH and all the columns having the same volume of materials, fixed end conditions and length of column. The behaviour of non-prismatic column is always based on tapering ratio and the slenderness ratio of the column. As the taper ratio increases, the elastic buckling load increases and stress decreases in the mean while the maximum stress occurs in the prismatic column compared with the non-prismatic column. As a result of this analysis Equivalent stress, Equivalent elastic strain, Total Deformation and Buckling load Deformation was observed and hence Stress-Strain graphs, Load -Deformation graphs and Mode-Load multiplier graph had been plotted.




[1] Dona Chacko George, Varghese M. Non Linear Behaviour of RCC Core Steel Composite Column. Journal of Structural Engineering. 2016;5(7):630-634.

[2] Sherif El-Tawil and Gregory G. Deierlein. Strength and ductility of concrete encased composite columns. Journal of Structural Engineering. 1999;125(9):1009–1019.

[3] Saima Ali & Mahbuba Begum. Numerical Analysis of Slender Partially Encased Composite Columns. 4th Annual Paper Meet and 1st Civil Engineering Congress. 2012; 22-24.

[4] Abd El-Moniem M. Amin; Ashraf M. Fadel, Sameh M. Gaawan, Reda A. Darwish. Assessment the Limit of Steel Core Area in the Encased Composite Column. 2016;6(1):72-78

[5] Ghosh D& Begum M. Simulations of partially encased composite column under concentric loading using equivalent steel section. International Journal of Advanced Technology in Civil Engineering. 2012;1(2):22-24.

[6] Weng C.C. & S.I. Yen, Taiwan. Comparisons of concrete-encased composite column strength provisions of ACI code and AISC speciï¬cation. Elsevier Science Ltd. 2002;24:59–72.

[7] Richard R and Abbott B. Versatile elastic-plastic stress-strain formula. Journal of Structural Engineering ASCE.1975;101(4):511–515.

[8] Chen C.C, Yeh S.C. Ultimate strength of concrete encased steel composite columns. In: Proceeding of the third national conference on structural engineering.1996; 2196-2206.

[9] Muguruma, H., Nishiyama, M., Watanabe, F., and Tanaka, H. Ductile behaviour of high-strength concrete columns confined by high strength transverse reinforcement. Proc ACI Int. Conf. 1991;2: 877– 891.

[10] Shin S., Ghosh, S. K. and Moreno, J. Flexural ductility of ultra-high-strength concrete members. ACI Journal of Structural Engineering. ASCE. 1983;109(10), 2375–2386.; 1989: 86(4), 394–400.

[11] Furlong, R.W. Column rules of ACI, SSLC, and LRFD compared Journal of Structural Engineering. ASCE. 1983;109(10):2375–2386.

[12] Tokgoz S, Dundar C. Experimental tests on biaxial loaded concrete encased composite columns. Journal on Steel and Composite Structure; 2008:8(5):423-438.

[13] Chicoine T, Tremblay R, Massicotte B, Ricles J. Behaviour and Strength of Partially-Encased Composite Columns with Built Up Shapes. Journal of Structural Engineering ASCE. 2002;128(3): 279-288.

[14] Mirza SA, Hyttinen V, Hyttinen E. Physical tests and analyses of composite steel–concrete beam-columns. Journal of Structural Engineering, ASCE 1996;122(11):1317–26.

El-Tawil S, Sanz-Pico`n CF, Deierlein GG. Evaluation of ACI 318 and AISC (LRFD) strength provisions for composite beamcolumns. Journal of Constructional Steel Research 1995;34:103–23.

View Full Article:

How to Cite

Kesavan, S., Ramesh, S., ., A., S.Sudarsan, J., Vanamoorthy kumaran, P., & Muthukumar, G. (2018). Buckling Analysis of Belly Shaped Composite Column. International Journal of Engineering & Technology, 7(3.12), 715–721. https://doi.org/10.14419/ijet.v7i3.12.16462
Received 2018-07-28
Accepted 2018-07-28
Published 2018-07-20