Numerical Investigation of Differently Formed Steel Circular Columns under Axial Compression. Issue 2 (3rd April 2019)

• Record Type: Journal Article
• Authors: Yang, Junfen; Xie, Jian; Liu, Haifeng; Li, Baoqi; Yan, Xifeng
• Is Part Of: Structural engineering international. Volume 29:Issue 2(2019)
• Page Start: 249
• Page End: 260
• Publication Date: 2019-04-03
• Subjects: forming method -- steel circular columns -- axial compression -- overall buckling -- design method; Structural engineering -- Periodicals; 624.1
• DOI: 10.1080/10168664.2018.1463808
• Languages: English
• ISSNs: 1016-8664

Abstract

Abstract: A finite-element method (FEM) model was used to numerically investigate the overall buckling behaviours of hot-rolled (HR), submerged arc welded (SAW) and high-frequency welded (HFW) steel circular columns under axial compression. A three-dimensional FEM model of circular hollow sections was developed by using shell elements considering material non-linearities, geometric imperfections and residual stress. The FEM model was used to simulate experimental studies carried out by past researchers. Good agreement was found between the numerical and experimental results, which validate the FEM model for further research. The validated FEM model was used to analyse 180 numerically generated HR, SAW and HFW steel circular columns with various section sizes and slenderness values. The numerical results were then compared with existing column design curves in Chinese, European and American codes. To further improve the design efficiency, new column design curves for steel circular columns are recommended based on the formulas given in GB 50017-2003 and Eurocode 3.