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A platform for research: civil engineering, architecture and urbanism
Behavior and design of concrete filled stainless steel tubular columns under concentric and eccentric compressive loading
Abstract Concrete Filled Stainless Steel Tubular (CFSST) column is a novel type of composite columns that features excellent structural performance, corrosion resistance as well as aesthetic appearance. Owing to the differential mechanical properties between stainless steel and carbon steel, extending the current design codes of conventional CFST columns to CFSST columns may cause unreliable predictions. To this end, this paper summarizes the current state-of-art of CFSST columns and compiles the database of CFSST columns subjected to concentric compressive loading and eccentric compressive loading. Based on the analysis of current studies, the applicability of current international design codes is comprehensively evaluated, and the numerical simulation is also performed through three-dimensional Finite Element (FE) modeling and two-dimensional Fiber Section (FS) modeling technique, where the concrete confinement effect is properly incorporated. Parametric study is then conducted using the validated FS model to investigate the influence of concrete compressive strength, steel yield strength and section slenderness ratio on load-carrying capacity. Finally, a new approach is proposed to construct the axial force-bending moment interaction diagram of CFSST columns, which is simple to use and generates enhanced prediction accuracy as compared with the current design method.
Highlights The database containing 308 concentrically-loaded and 157 eccentrically-loaded CFSST columns was compiled. New formulas were proposed to predict the axial compressive capacity of CFSST columns. Finite element analysis and fiber section analysis were employed to simulate the axial-flexural behavior. A simplified method was proposed to construct the N-M curve of CFSST columns.
Behavior and design of concrete filled stainless steel tubular columns under concentric and eccentric compressive loading
Abstract Concrete Filled Stainless Steel Tubular (CFSST) column is a novel type of composite columns that features excellent structural performance, corrosion resistance as well as aesthetic appearance. Owing to the differential mechanical properties between stainless steel and carbon steel, extending the current design codes of conventional CFST columns to CFSST columns may cause unreliable predictions. To this end, this paper summarizes the current state-of-art of CFSST columns and compiles the database of CFSST columns subjected to concentric compressive loading and eccentric compressive loading. Based on the analysis of current studies, the applicability of current international design codes is comprehensively evaluated, and the numerical simulation is also performed through three-dimensional Finite Element (FE) modeling and two-dimensional Fiber Section (FS) modeling technique, where the concrete confinement effect is properly incorporated. Parametric study is then conducted using the validated FS model to investigate the influence of concrete compressive strength, steel yield strength and section slenderness ratio on load-carrying capacity. Finally, a new approach is proposed to construct the axial force-bending moment interaction diagram of CFSST columns, which is simple to use and generates enhanced prediction accuracy as compared with the current design method.
Highlights The database containing 308 concentrically-loaded and 157 eccentrically-loaded CFSST columns was compiled. New formulas were proposed to predict the axial compressive capacity of CFSST columns. Finite element analysis and fiber section analysis were employed to simulate the axial-flexural behavior. A simplified method was proposed to construct the N-M curve of CFSST columns.
Behavior and design of concrete filled stainless steel tubular columns under concentric and eccentric compressive loading
Lai, Bing-Lin (author) / Zheng, Xiao-Feng (author) / Fan, Sheng-Gang (author) / Chang, Zhao-Qun (author)
2023-11-04
Article (Journal)
Electronic Resource
English
Concrete-filled tubular steel columns under eccentric loading
| Engineering Index Backfile | 1969
Concrete-filled round-ended steel tubular stub columns under concentric and eccentric loads
| TIBKAT | 2018