Analysis and design of concrete-filled stiffened thin-walled steel tubular columns under axial compression

作者：Tao Zhong^*; Uy Brian; Han Lin Hai; Wang Zhi Bin

来源：Thin-Walled Structures, 2009, 47(12): 1544-1556.

DOI：10.1016/j.tws.2009.05.006

• Concrete-filled steel tubes
• Thin-walled
• Stub columns
• Axial compression
• Local buckling
• Stiffeners
• Finite element analysis
• Design

Longitudinal stiffeners are effective in improving the overall performance of concrete-filled square or rectangular thin-walled steel tubular columns. This paper is concerned with the nonlinear analysis and design of stiffened square stub columns under axial compression. The nonlinear analysis is performed using ABAQUS, a commercially available finite element (FE) program. Close agreement is shown between the test and predicted results in terms of the load-deformation curves and ultimate strength. The column behaviour is investigated and discussed using this modelling. The limit of width-to-thickness ratio for the sub-panels and the rigidity requirement for the stiffeners is discussed. The feasibility using existing design codes to predict the load-carrying capacities of the stiffened composite columns is also dealt with in this paper.

• 出版日期2009-12
• 单位清华大学; 福州大学