Design strength of cold-formed steel elliptical tubular stub columns with steel grades up to 960MPa

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	Design strength of cold-formed steel elliptical tubular stub columns with steel grades up to 960MPa
	Ye Yao 1; Wai-Meng QUACH2 ; Ben Young 3
	2024-06-05
Conference Name	The 10th International Conference on Steel and Aluminium Structures (ICSAS24), Rio de Janeiro, Brazil, 5-7 June 2024
Source Publication	Proceedings of the 10th International Conference on Steel and Aluminium Structures (ICSAS24), Rio de Janeiro, Brazil, 5-7 June 2024
Pages	11-20
Conference Date	5-7 June 2024
Conference Place	Rio de Janeiro,
Country	Brazil
Abstract	This paper aims to numerically investigate the cross-section capacity of cold-formed steel elliptical hollow sections (EHS) with steel grades up to 960MPa. In the present study, a parametric study on the stub-column strength of cold-formed steel EHS was conducted for a wide range of steel grades and cross-section slenderness values by using a validated finite element (FE) model for the stub columns of cold-formed steel tubular sections. Based on the generated FE data and the collected test data; the existing equivalent diameter method, the traditional design rules for circular hollow sections with equivalent diameter incorporated, the Continuous Strength Method, and the Direct Strength Method, which have not yet been calibrated for cold-formed high strength steel EHS, were evaluated by comparing their predicted stub column strengths with the numerical and collected test data. The Continuous Strength Method and Direct Strength Method were found to provide better predictions than other design methods. Modified CSM base curves were then developed to further improve the accuracy of the existing CSM for cold-formed steel EHS with steel grades up to 960 MPa.
Keyword	Local Buckling Design Method Cold-formed Elliptical Hollow Sections Cross-section Capacity
Language	英語English
Document Type	Conference paper
Collection	DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding Author	Wai-Meng QUACH
Affiliation	1.School of Resources and Civil Engineering, Northeastern University, Shenyang, China 2.Department of Civil and Environmental Engineering, University of Macau, Macau, China 3.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China
Corresponding Author Affilication	University of Macau
Recommended Citation GB/T 7714	Ye Yao,Wai-Meng QUACH,Ben Young. Design strength of cold-formed steel elliptical tubular stub columns with steel grades up to 960MPa[C], 2024, 11-20.
APA	Ye Yao., Wai-Meng QUACH., & Ben Young (2024). Design strength of cold-formed steel elliptical tubular stub columns with steel grades up to 960MPa. Proceedings of the 10th International Conference on Steel and Aluminium Structures (ICSAS24), Rio de Janeiro, Brazil, 5-7 June 2024, 11-20.

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