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Mechanical behavior of CFRP confined seawater sea-sand recycled concrete-filled circular aluminum-alloy tube columns under axial compression
https://orcid.org/0000-0002-6930-979X
Highlights CFRP confined concrete-filled circular aluminum-alloy tube columns under axial compression were investigated. The number of CFRP layers, the thickness of aluminum tubes, and the concrete strength were the variables of this study. A modified axial strain-lateral strain response model for core concrete was proposed. A new analysis-oriented model for the composite structure was developed. Design equations for axial compressive resistance of CFRP-CFAT columns were proposed.
Abstract This paper presents an experimental study and theoretical analysis of the mechanical behavior of CFRP-confined seawater sea-sand recycled concrete-filled circular aluminum-alloy tube short columns (CFRP-CFAT) under axial compression. A total of 12 circular cross-section specimens were tested, including 4 concrete-filled circular aluminum-alloy tube (CFAT) specimens and 8 CFRP-CFAT specimens. The effects of the number of CFRP layers, the thickness of the aluminum tubes, and the strength of the concrete were investigated. The test results indicate that CFRP can effectively delay or even suppress the local buckling of aluminum alloy tubes and significantly improve the ultimate load capacity of the specimens, and the enhancement is approximately linear with the number of CFRP layers. Based on the experimental results, a modified axial strain-lateral strain response model for core concrete is proposed. In addition, a new analysis-oriented model applicable to circular CFRP-CFAT short columns is established and compared with the test results for verification. Meanwhile, the CFRP-CFAT ultimate load-bearing capacity calculation method is proposed based on the superposition theory and the analysis-oriented model. The predicted results are in high consistency with the experimental results.
Mechanical behavior of CFRP confined seawater sea-sand recycled concrete-filled circular aluminum-alloy tube columns under axial compression
https://orcid.org/0000-0002-6930-979X
Highlights CFRP confined concrete-filled circular aluminum-alloy tube columns under axial compression were investigated. The number of CFRP layers, the thickness of aluminum tubes, and the concrete strength were the variables of this study. A modified axial strain-lateral strain response model for core concrete was proposed. A new analysis-oriented model for the composite structure was developed. Design equations for axial compressive resistance of CFRP-CFAT columns were proposed.
Abstract This paper presents an experimental study and theoretical analysis of the mechanical behavior of CFRP-confined seawater sea-sand recycled concrete-filled circular aluminum-alloy tube short columns (CFRP-CFAT) under axial compression. A total of 12 circular cross-section specimens were tested, including 4 concrete-filled circular aluminum-alloy tube (CFAT) specimens and 8 CFRP-CFAT specimens. The effects of the number of CFRP layers, the thickness of the aluminum tubes, and the strength of the concrete were investigated. The test results indicate that CFRP can effectively delay or even suppress the local buckling of aluminum alloy tubes and significantly improve the ultimate load capacity of the specimens, and the enhancement is approximately linear with the number of CFRP layers. Based on the experimental results, a modified axial strain-lateral strain response model for core concrete is proposed. In addition, a new analysis-oriented model applicable to circular CFRP-CFAT short columns is established and compared with the test results for verification. Meanwhile, the CFRP-CFAT ultimate load-bearing capacity calculation method is proposed based on the superposition theory and the analysis-oriented model. The predicted results are in high consistency with the experimental results.
Mechanical behavior of CFRP confined seawater sea-sand recycled concrete-filled circular aluminum-alloy tube columns under axial compression
https://orcid.org/0000-0002-6930-979X
Highlights CFRP confined concrete-filled circular aluminum-alloy tube columns under axial compression were investigated. The number of CFRP layers, the thickness of aluminum tubes, and the concrete strength were the variables of this study. A modified axial strain-lateral strain response model for core concrete was proposed. A new analysis-oriented model for the composite structure was developed. Design equations for axial compressive resistance of CFRP-CFAT columns were proposed.
Abstract This paper presents an experimental study and theoretical analysis of the mechanical behavior of CFRP-confined seawater sea-sand recycled concrete-filled circular aluminum-alloy tube short columns (CFRP-CFAT) under axial compression. A total of 12 circular cross-section specimens were tested, including 4 concrete-filled circular aluminum-alloy tube (CFAT) specimens and 8 CFRP-CFAT specimens. The effects of the number of CFRP layers, the thickness of the aluminum tubes, and the strength of the concrete were investigated. The test results indicate that CFRP can effectively delay or even suppress the local buckling of aluminum alloy tubes and significantly improve the ultimate load capacity of the specimens, and the enhancement is approximately linear with the number of CFRP layers. Based on the experimental results, a modified axial strain-lateral strain response model for core concrete is proposed. In addition, a new analysis-oriented model applicable to circular CFRP-CFAT short columns is established and compared with the test results for verification. Meanwhile, the CFRP-CFAT ultimate load-bearing capacity calculation method is proposed based on the superposition theory and the analysis-oriented model. The predicted results are in high consistency with the experimental results.
Mechanical behavior of CFRP confined seawater sea-sand recycled concrete-filled circular aluminum-alloy tube columns under axial compression
Gao, Xifeng (Autor:in) / Zhang, Zhiyang (Autor:in) / Xu, Jie (Autor:in) / Su, Shuo (Autor:in)
28.06.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2010
| British Library Conference Proceedings | 2015