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Lateral impact resistance of CFST cantilever members stiffened with encased I-shaped CFRP
Abstract The lateral impact resistance of cantilever concrete-filled steel tubular (CFST) members stiffened with encased I-shaped carbon fiber reinforced plastic (CFRP) profiles subjected to lateral impact is investigated in this paper. The impact tests are performed on four specimens to examine the dynamic response. Finite element analysis models are established and verified against tested results. Baseline simulations are also created using the validated models to further analyze the damage pattern and energy dissipation mechanism of each component in the impact events. It is found that compared with traditional CFST members, the new composite members have higher peak impact force, lower dynamic displacement, and larger energy dissipation capacity. Additionally, the effects of design parameters on the impact performance are evaluated by parametric analyses, and the results provide valuable suggestions for developing design guidance.
Highlights Lateral impact test of CFST member stiffened with encased I-shaped CFRP under cantilever boundary condition was conducted. The cooperative working mechanism of steel tube, concrete and CFRP profile in composite member was revealed. The energy dissipation capacity of each component in different impact stages was quantitatively evaluated. The influencing rules of different parameters on the impact resistance of composite members were summarized.
Lateral impact resistance of CFST cantilever members stiffened with encased I-shaped CFRP
Abstract The lateral impact resistance of cantilever concrete-filled steel tubular (CFST) members stiffened with encased I-shaped carbon fiber reinforced plastic (CFRP) profiles subjected to lateral impact is investigated in this paper. The impact tests are performed on four specimens to examine the dynamic response. Finite element analysis models are established and verified against tested results. Baseline simulations are also created using the validated models to further analyze the damage pattern and energy dissipation mechanism of each component in the impact events. It is found that compared with traditional CFST members, the new composite members have higher peak impact force, lower dynamic displacement, and larger energy dissipation capacity. Additionally, the effects of design parameters on the impact performance are evaluated by parametric analyses, and the results provide valuable suggestions for developing design guidance.
Highlights Lateral impact test of CFST member stiffened with encased I-shaped CFRP under cantilever boundary condition was conducted. The cooperative working mechanism of steel tube, concrete and CFRP profile in composite member was revealed. The energy dissipation capacity of each component in different impact stages was quantitatively evaluated. The influencing rules of different parameters on the impact resistance of composite members were summarized.
Lateral impact resistance of CFST cantilever members stiffened with encased I-shaped CFRP
Li, Guochang (author) / Zhang, Zijian (author) / Fang, Chen (author) / Li, Xiao (author) / Wang, Jialong (author)
2023-08-23
Article (Journal)
Electronic Resource
English
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