Compression-bending performance of L-shaped column composed of concrete filled square steel tubes under eccentric compression

• DOI: 10.1007/s13296-016-0128-2
• Publication Date: 2017-03-22T08:47:46Z
• Authors: Bin Rong; Changxi Feng; Ruoyu Zhang; Guangchao You; Rui Liu
• Keywords: 02 engineering and technology; 0201 civil engineering

In order to investigate mechanical properties of L-shaped column composed of concrete-filled square steel tubes (LCFT column) under eccentric compression, LCFT columns were designed and tested. Through two eccentric compression experiments, the failure mode, the curves of loading-displacement for the whole member and the curves of deflection for mono column (single limb of LCFT column) were obtained. Nonlinear finite element analysis was also employed in this investigation, in which thickness of tube flange, connecting plate thickness and diameter of the hole on connecting plate were discussed. According to results of eccentric compression test and finite element analysis, analytical method of bearing capacity of LCFT columns is proposed based on the yielding criterion of the cross-sectional edge stresses. Results of analytical method, finite element analysis and eccentric compression experiment are resistant with each other, and the accuracy of the analytical method in this paper is verified.