Finite Element Modelling of Concrete Filled Steel Tube Columns Wrapped with CFRP
| Main Authors: | Khairedin M. Abdalla, Rajai Al-Rousan, Mohammad A. Alhassan, Nikos D. Lagaros |
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| Format: | Article |
| Bahasa: | eng |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3274232 |
Daftar Isi:
- Experimental evaluation of the structural behavior of concrete-filled tubular (CFT) circular steel columns under the combined effects of axial and cyclic lateral loads is costly and challenging. Therefore, this study provides a nonlinear finite element analysis (FEA) of 21 models for CFT circular steel columns wrapped with a number of carbon fiber reinforced polymer (CFRP) composites layers at its end region, which represents the critical location in terms of the lateral load capacity. The intent is to confine the column end to avoid outward local buckling of the CFT column and thus developing high strength, larger net drift and more energy dissipation. The nonlinear FEA models were properly calibrated and validated with reputable experimental results, followed by conducting a parametric study to assess the influence of the number of CFRP layers and axial load level on the CFT circular steel column performance. Also, it was found that the column axial load level significantly affects the CFT circular steel column behavior under lateral loading; better behavior as the axial load level increased. It takes a parametric investigation and a significant extension of the strengthening system of any CFT circular steel column and the findings of this study represents useful guidelines and methodology for similar strengthening of CFT steel columns.