Ayough, Pouria and Wang, Yu-Hang and Ibrahim, Zainah (2023) Analytical study of concrete-filled steel tubular stub columns with double inner steel tubes. Steel and Composite Structures, 47 (5). pp. 645-661. ISSN 1229-9367, DOI https://doi.org/10.12989/scs.2023.47.5.645.
Full text not available from this repository.Abstract
Concrete-filled steel tubular columns with double inner steel tubes (CFST-DIST) are a novel type of composite members developed from conventional concrete-filled steel tubular (CFST) columns. This paper investigates the structural performance of circular CFST-DIST stub columns using nonlinear finite element (FE) analysis. A numerical model was developed and verified against existing experimental test results. The validated model was then used to compare circular CFST-DIST stub columns' behavior with their concrete-filled double skin steel tubular (CFDST) and CFST counterparts. A parametric study was performed to ascertain the effects of geometric and material properties on the axial performance of CFST-DISTs. The FE results and the available test data were used to assess the accuracy of the European and American design regulations in predicting the axial compressive capacity of circular CFST-DIST stub columns. Finally, a new design model was recommended for estimating the compressive capacity of CFST-DISTs. Results clarified that circular CFST-DIST columns had the advantages of their CFST counterparts but with better ductility and strength-to-weight ratio. Besides, the investigated design codes led to conservative predictions of the compressive capacity of circular CFST-DIST columns.
| Item Type: | Article |
|---|---|
| Funders: | National Natural Science Foundation of China (NSFC) [Grant No: 52278144] |
| Uncontrolled Keywords: | Composite structure; Concrete-filled; Finite element; Nonlinear analysis; Steel tubular column |
| Subjects: | T Technology > TH Building construction |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 07 Oct 2025 07:26 |
| Last Modified: | 07 Oct 2025 07:26 |
| URI: | http://eprints.um.edu.my/id/eprint/48242 |
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