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doi:10.3850/978-981-08-9247-0_rp060-icsas11
Nonlinear Finite Element Analysis on Short Columns of High Strength Concrete Filled Square Steel Tube with Inner CFRP Circular Tube
G.-C. Li1, S.-J. Li1, Q. Wang1, Y.-S. Wang2 and C.-Y. Zhang1
1School of Civil Engineering, Shenyang Jianzhu University, Shenyang, 110168, China
2Provincial Key Laboratory of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
ABSTRACT
CFRP tube is put into a high strength concrete filled square steel tubular column. The core concrete in the column is divided into two parts: sandwich concrete and inner concrete. This column is called column of high strength concrete filled square steel tube with inner CFRP circular tube in this paper. To study the effects of CFRP, steel ratio and eccentricity ratio on the short columns of high strength concrete filled square steel tube with inner CFRP circular tube under uniaxial eccentric compression, nonlinear finite element analysis on this short column is carried out by using ABAQUS software. The mechanical behavior of steel and high strength concrete and the contact relationship of high strength concrete, CFRP and steel tube are analyzed under uniaxial eccentric compression. It is concluded that this short column under uniaxial eccentric compression has good ductility and its ability to deform is improved compared with high strength concrete filled square steel tubular short column.
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