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Axial Capacity of Concrete Infilled Steel Box Column with Biaxial Bending

by Chao Ying Lin, Natl Taiwan Inst of Technology, Taipei, Taiwan,
Sheng Jung Chin, Natl Taiwan Inst of Technology, Taipei, Taiwan,
Chien Ming Huang, Natl Taiwan Inst of Technology, Taipei, Taiwan,



Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation

Abstract:

The objective of this study was to investigate the feasibility of using the Bresler reciprocal load method to calculate the axial capacity of a concrete infilled steel box column subjected to axial compression in combination with biaxial bending moment. A total of 6 specimens was tested. The variables considered in this experiment included the width thickness ratio of the steel tube, the load eccentricity and the spacing of shear stud. The test results indicated that the Bresler reciprocal load method can be used to calculate the ultimate strength of the concrete infilled steel box column. The residual deformation at the end of each loading cycle had an effect on the ultimate strength of the subsequent loading process. The axial capacity of the specimens was controlled by the welding strength at the corner of each steel box section.

Subject Headings: Steel columns | Strength of materials | Steel structures | Concrete columns | Material tests | Load factors | Box columns

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