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Funct. Mater. 2017; 24 (3): 451-452.

doi:https://doi.org/10.15407/fm24.03.451

Nonlinear analysis of concrete-filled steel square tube strengthened by internal transverse stiffened bars under axial compression

Nan Li1,2, Lai Wang2, Yajun Xi3, Tong Guan1, Hui Wang1, Furui Dong1

1Department of Resources and Civil Engineering, Shandong University of Science & Technology, Taian, 271000, China
2School of Civil Engineering and Architecture,Shandong University of Science and Technology, Qingdao, 266590,China
3Tai’an engineering construction standard cost office, Taian, Shandong, 271000,China;

Abstract: 

A new type of concrete-filled square steel tubular(CFSST) column is proposed, which is characterized by the transverse stiffened steel bars arranged inside the pipe wall to improve confinement performance of the concrete core. This paper employs a nonlinear analysis of square CFSST stub columns under axial compression. A three-dimensional nonlinear finite element (FE) model is developed using ABAQUS, where nonlinear material behavior and enhanced strength corner properties of steel are included. Close agreement is achieved between the test and FE results in terms of load-deformation response and ultimate strength.

Keywords: 
Internal transverse stiffened bars, concrete-filled steel square tube, axial compression, finite element, strength
References: 

1. B. Uy, S.B. Patil, Struct Des Tall Build, 5(2),75, 2006.

2. Zhao XL, Han LH, Lu H., Concrete-filled tubular members and connections. London, Spon Press, 2010.

3. Zhong Shan Tong. Steel Pipe Concrete (3rd Edition). Beijing: Tsinghua University Press, 2002.

4. Han Linhai, Concrete-filled steel tube structure - theory and practice,Beijing, Science Press, 2004

5. Han Linhai, Yang Youfu. Modern concrete-filled steel tube technology, China Construction Industry Press, 2004

6. Zhong Shan Tong. High-rise concrete-filled steel tube structure, Harbin: Heilongjiang Science and Technology Press, 1997

7. R. W. Furlong, J. Struct. Div.,93(5),113, 1967.

8. R. B . Knowles, R. Park. J. Struct. Div. ASCE. , 95(2), 2565, 1969

9. H. Shakir-Khalil, J. Zeghiche, Struct. Engin., 67(9), 346, 1989.

10. Brian Uy, J.Y. Richard Liew. J.Constr.Steel Res., 62(6), 58111, 2006.

11. M. Dundu, Eng. Struct.,127,73, 2016. https://doi.org/10.1016/j.engstruct.2016.08.039

12. X.H. Dai, D. Lam, J. Constr. Steel Res., 73, 117, 2012,

13. Han LH, Yao GH, Tao Z. . Thin-Walled Structures, 45 (1), 24,, 2007.

14. Tao Z, Uy B, Han LH, Wang ZB. Thin-Walled Structures, 47(12),1544, 2009.

15. Hibbitt, Karlsson&Sorensen, INC, Getting Started with ABAQUS, 2005.

16. ABAQUS. ABAQUS standard user's manual, version 6.9. Providence, RI (USA), Dassault Systymes Corp, 2009.

17. Han Lin-hai,Feng Jiu-bin, J. Harbin Univ. Arch., 28(5),26, 1995

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