Study on rectangular concrete-filled steel tubes with unequal wall thickness

Yang Zhang , Chen-Jiang Yu , Guang-Yuan Fu , Bing Chen , She-Xu Zhao , Si-Ping Li

Abstract

Rectangular concrete-filled steel tubular columns with unequal wall thickness were investigated in the paper. The physical centroid, the centroidal principal axes of inertia, and the section core were given. The generalized bending formula and the generalized eccentric compression formula were deduced, and the equation of the neutral axis was also provided. The two rectangular concrete-filled steel tubular stub specimens subjected to the compression load on the physical centroid and the geometric centroid respectively were tested to verify the theoretical formulas.

Key Words

CFST; asymmetric cross section; physical centroid; generalized bending formula; generalized eccentric compression formula; cross section core

Address

(1) Yang Zhang, Chen-Jiang Yu, Guang-Yuan Fu, She-Xu Zhao, Si-Ping Li — Department of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
(2) Yang Zhang — School of Civil Engineering, Nanyang Institute of Technology, Nanyang 473004, P.R. China
(3) Bing Chen — Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.

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