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A platform for research: civil engineering, architecture and urbanism
Behavior of steel-reinforced concrete-filled square steel tubular stub columns under axial loading
AbstractThe objectives of this paper is to investigate the mechanical behavior of steel reinforced concrete-filled square steel tubular (SRCFT) stub columns under axial loading through combined experimental and numerical studies. In total of six specimens are tested to investigate the effect of the concrete strength and steel ratio on the mechanical behavior of SRCFT stub columns. The ultimate bearing capacity, ductility, and confinement effects are discussed and clarified based on the experimental results. The inserted steel section can effectively prevent shear cracks in the core concrete from propagating quickly. The strength-weight-ratio of SRCFT stub column is larger than SCFT stub column. In addition, ABAQUS is used to establish the 3D finite element (FE) model and analyze the composite action of SRCFT stub columns under axial loading. Based on the experimental and numerical results, a simplified formula is proposed to estimate the ultimate bearing capacity of SRCFT stub columns using superposition method. The predicted results show satisfactory agreement with both experimental and FE results.
HighlightsThe column is a steel reinforced concrete-filled squaresteel tubular (SRCFT) stub column.A 3D FE model is developed to analyze the compressive properties of SRCFT stub column.There exists a significant composite action between the steel tube,core concrete and steel section.A practical formula for SRCFT stub columns is proposed.
Behavior of steel-reinforced concrete-filled square steel tubular stub columns under axial loading
AbstractThe objectives of this paper is to investigate the mechanical behavior of steel reinforced concrete-filled square steel tubular (SRCFT) stub columns under axial loading through combined experimental and numerical studies. In total of six specimens are tested to investigate the effect of the concrete strength and steel ratio on the mechanical behavior of SRCFT stub columns. The ultimate bearing capacity, ductility, and confinement effects are discussed and clarified based on the experimental results. The inserted steel section can effectively prevent shear cracks in the core concrete from propagating quickly. The strength-weight-ratio of SRCFT stub column is larger than SCFT stub column. In addition, ABAQUS is used to establish the 3D finite element (FE) model and analyze the composite action of SRCFT stub columns under axial loading. Based on the experimental and numerical results, a simplified formula is proposed to estimate the ultimate bearing capacity of SRCFT stub columns using superposition method. The predicted results show satisfactory agreement with both experimental and FE results.
HighlightsThe column is a steel reinforced concrete-filled squaresteel tubular (SRCFT) stub column.A 3D FE model is developed to analyze the compressive properties of SRCFT stub column.There exists a significant composite action between the steel tube,core concrete and steel section.A practical formula for SRCFT stub columns is proposed.
Behavior of steel-reinforced concrete-filled square steel tubular stub columns under axial loading
Ding, Fa-xing (author) / Zhang, Tao (author) / Liu, Xue-mei (author) / Lu, Zhao-Hui (author) / Guo, Qiang (author) / Jiang, Guo-shuai (author)
Thin-Walled Structures ; 119 ; 737-748
2017-07-24
12 pages
Article (Journal)
Electronic Resource
English
Axial Loading Behavior of CFRP Strengthened Concrete-Filled Steel Tubular Stub Columns
| Online Contents | 2007
| British Library Online Contents | 2018
Axial Loading Behavior of CFRP Strengthened Concrete-Filled Steel Tubular Stub Columns
| SAGE Publications | 2007