Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columns
Utilizing numerical and analytical methods, this paper assesses compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tube (CFSST) columns under axial compression. Considering both geometric and material nonlinearities, Finite Element (FE) model was developed and vali...
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024021479 |
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| author | Md. Imran Kabir Munim Shahriar Rehan Zarif Ahmed Ann Nazmun Sakib Muntasir Mohammad Shoeb |
| author_facet | Md. Imran Kabir Munim Shahriar Rehan Zarif Ahmed Ann Nazmun Sakib Muntasir Mohammad Shoeb |
| author_sort | Md. Imran Kabir |
| collection | DOAJ |
| description | Utilizing numerical and analytical methods, this paper assesses compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tube (CFSST) columns under axial compression. Considering both geometric and material nonlinearities, Finite Element (FE) model was developed and validated against test results. The validated FE model was then employed to carry out an extended parametric study covering a wide range of parameters which includes the width of the outer tube, diameter of the inner tube, thickness of the tubes, material strengths and heights of the columns. The study results indicated that the axial strengths of the columns could be increased by up to 36 % and 30 % for short and long columns, respectively considering an optimized combination of parameters. Besides, notable enhancements in the ductility and toughness of the columns were observed, with ductility experiencing a 10–40 % increase and toughness improving by up to 57 %. Furthermore, the FE predicted axial strengths of the columns were compared with those calculated from different design codes, such as ACI 318–14, EC 4, ANSI/AISC 360–16, and AS 2327. Existing design codes underestimated the peak axial strengths of the columns, particularly for long columns. Hence, a modified squash strength formula was proposed where a good alignment with the FE predicted strengths was observed, with a mean predicted-to-test strength ratio of 0.99 and 1.1 for stub and long columns, respectively. The outcomes of this study thus provided valuable insights regarding the compressive performance of the ST-CFSST columns, and thus emphasize their potential applicability in modern construction. |
| format | Article |
| id | doaj-art-51f32caa28bd423884ac41faee00b684 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-51f32caa28bd423884ac41faee00b6842025-01-04T04:56:58ZengElsevierResults in Engineering2590-12302025-03-0125103904Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columnsMd. Imran Kabir0Munim Shahriar Rehan1Zarif Ahmed2Ann Nazmun Sakib3Muntasir Mohammad Shoeb4Corresponding author at: Islamic University of Technology, Gazipur, Bangladesh.; Department of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, BangladeshDepartment of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, BangladeshDepartment of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, BangladeshDepartment of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, BangladeshDepartment of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, BangladeshUtilizing numerical and analytical methods, this paper assesses compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tube (CFSST) columns under axial compression. Considering both geometric and material nonlinearities, Finite Element (FE) model was developed and validated against test results. The validated FE model was then employed to carry out an extended parametric study covering a wide range of parameters which includes the width of the outer tube, diameter of the inner tube, thickness of the tubes, material strengths and heights of the columns. The study results indicated that the axial strengths of the columns could be increased by up to 36 % and 30 % for short and long columns, respectively considering an optimized combination of parameters. Besides, notable enhancements in the ductility and toughness of the columns were observed, with ductility experiencing a 10–40 % increase and toughness improving by up to 57 %. Furthermore, the FE predicted axial strengths of the columns were compared with those calculated from different design codes, such as ACI 318–14, EC 4, ANSI/AISC 360–16, and AS 2327. Existing design codes underestimated the peak axial strengths of the columns, particularly for long columns. Hence, a modified squash strength formula was proposed where a good alignment with the FE predicted strengths was observed, with a mean predicted-to-test strength ratio of 0.99 and 1.1 for stub and long columns, respectively. The outcomes of this study thus provided valuable insights regarding the compressive performance of the ST-CFSST columns, and thus emphasize their potential applicability in modern construction.http://www.sciencedirect.com/science/article/pii/S2590123024021479Compressive behaviourST-CFSST columnsFinite element analysisLoad-bearing capacityStructural optimizationModified squash strength |
| spellingShingle | Md. Imran Kabir Munim Shahriar Rehan Zarif Ahmed Ann Nazmun Sakib Muntasir Mohammad Shoeb Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columns Results in Engineering Compressive behaviour ST-CFSST columns Finite element analysis Load-bearing capacity Structural optimization Modified squash strength |
| title | Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columns |
| title_full | Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columns |
| title_fullStr | Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columns |
| title_full_unstemmed | Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columns |
| title_short | Numerical and analytical evaluation of the compressive performance of Steel Tube (ST)-reinforced Concrete Filled Stainless Steel Tubular (CFSST) columns |
| title_sort | numerical and analytical evaluation of the compressive performance of steel tube st reinforced concrete filled stainless steel tubular cfsst columns |
| topic | Compressive behaviour ST-CFSST columns Finite element analysis Load-bearing capacity Structural optimization Modified squash strength |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024021479 |
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