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Investigation on the axial behavior of cold-formed thick-walled steel columns
Abstract An experimental study on the stub columns of cold-formed thick-walled square, rectangular and circular steel tubes under axial compression was presented in this paper. Obvious cold-forming effect was observed from the tensile coupon test for RHS and SHS, in terms of the yield strength and elongation. It was shown that the width-to-thickness ratio had a significant influence on the failure modes and load-displacement curves of the stub columns. Performance of current design methods, including effective width methods in design codes, direct strength method (DSM) and continuous strength method (CSM), in predicting the ultimate capacity of stub columns was assessed by comparing the predicted capacities with the experimental capacities in this study and existing literature. It is shown that the CSM can provide more accurate and consistent strength predictions than the methods in current design codes.
Highlights Experimental investigation of cold-formed thick-walled stub columns, including square, rectangular and circular sections. Different failure modes and influencing factors of stub columns are explained. Design methods in the codes considering the cold forming effect are evaluated. Application of continuous strength method on cold-formed thick-walled stub columns.
Investigation on the axial behavior of cold-formed thick-walled steel columns
Abstract An experimental study on the stub columns of cold-formed thick-walled square, rectangular and circular steel tubes under axial compression was presented in this paper. Obvious cold-forming effect was observed from the tensile coupon test for RHS and SHS, in terms of the yield strength and elongation. It was shown that the width-to-thickness ratio had a significant influence on the failure modes and load-displacement curves of the stub columns. Performance of current design methods, including effective width methods in design codes, direct strength method (DSM) and continuous strength method (CSM), in predicting the ultimate capacity of stub columns was assessed by comparing the predicted capacities with the experimental capacities in this study and existing literature. It is shown that the CSM can provide more accurate and consistent strength predictions than the methods in current design codes.
Highlights Experimental investigation of cold-formed thick-walled stub columns, including square, rectangular and circular sections. Different failure modes and influencing factors of stub columns are explained. Design methods in the codes considering the cold forming effect are evaluated. Application of continuous strength method on cold-formed thick-walled stub columns.
Investigation on the axial behavior of cold-formed thick-walled steel columns
Wen, Donghui (author) / Li, Yuanqi (author) / Peng, Ruilingfeng (author) / Li, Yinglei (author) / Wang, Liping (author) / Zhou, Yi (author)
2024-01-15
Article (Journal)
Electronic Resource
English
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