To investigate the axial compression behavior of cruciform steel reinforced concrete composite stub columns with high-strength concrete and Q690 steel, six specimens were tested under axial compression loading and analyzed by using finite element analysis. The research parameters included stirrup spacing, stirrup type, and steel fiber content in concrete. Results show that reducing the stirrup spacing leads to minor improvement in the bearing capacity of the steel fiber-reinforced composite stub columns. Similarly, the configuration of multiple stirrups may also have a negligible effect on the bearing capacity of the composite columns. However, reducing the stirrup spacing and configuring multiple stirrups can significantly improve the ductility of the specimens. In contrast, adding 2% steel fibers can remarkably improve the bearing capacity and ductility of the composite columns. Subsequently, the axial bearing capacity of the specimens was predicted using the current design codes, and it was found that the predictions were all conservative. Finally, finite element analysis was conducted to further study the axial compression behavior of the tested composite columns.
Zhengbo He — 1)Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya, Hainan,572025, China 2)School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
Ahmed Samir Elsemeen — 1)Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya, Hainan,572025, China 2)School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
Tao Li — 1)Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya, Hainan,572025, China 2)School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
Ming-Shan Zhao — Singapore Institute of Technology, Singapore 828608, Singapore
Sing-Ping Chiew — Singapore Institute of Technology, Singapore 828608, Singapore
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