Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t Ratios
The impacts of three diameter/thickness (D/t) ratios (21.22, 25.46, and 31.83) and concrete strengths (40 N/mm2, 50 N/mm2, and 60 N/mm2) on the strength capabilities of concrete-filled steel tubular (CFST) columns are investigated in this study. The central composite design (CCD) of the response sur...
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| Format: | Article |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/9170525 |
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| author | Preetha Achuthan Ganapathy Ganesh Prabhu George Gabriel Vimal Arokiaraj Panneerselvam Arul Sivanantham Subramanian Suthagar |
| author_facet | Preetha Achuthan Ganapathy Ganesh Prabhu George Gabriel Vimal Arokiaraj Panneerselvam Arul Sivanantham Subramanian Suthagar |
| author_sort | Preetha Achuthan |
| collection | DOAJ |
| description | The impacts of three diameter/thickness (D/t) ratios (21.22, 25.46, and 31.83) and concrete strengths (40 N/mm2, 50 N/mm2, and 60 N/mm2) on the strength capabilities of concrete-filled steel tubular (CFST) columns are investigated in this study. The central composite design (CCD) of the response surface methodology (RSM) was used to design the trials in order to complete the tests in a cost-effective manner. 13 (9 distinct tests) columns were evaluated according to the CCD experimental design, and the failure mode of the specimens, load–deformation behavior, and ultimate strength capacity were investigated. Concrete strength improves, resulting in a decrease in steel tube confinement on the core. Because the steel tube longitudinal compressive stress (fsl) increases as the D/t ratio lowers, the confinement is reduced by inhibiting the circumferential tensile stress (fsc). The Reynolds stress model’s, analysis of variance (ANOVA), Pareto chart, and contour plot demonstrated that the column D/t ratio, rather than the in-filled concrete strength, has a considerable impact on the CFST column’s strength capability. The proposed design models in different international codes and literature were evaluated for their effectiveness in predicting the strength capacities of CFST columns subjected to axial compression load. Using regression analysis, a simple design model was suggested to predict the axial strength capacities of CFST short columns, taking into account material strength and column shape. In comparison to other existing and suggested design models, the proposed design model of the present study delivers a more accurate and stable forecast. |
| format | Article |
| id | doaj-art-96eea142cc8a442b9a7fd1b423f0bde8 |
| institution | Kabale University |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-96eea142cc8a442b9a7fd1b423f0bde82025-02-03T06:04:48ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/9170525Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t RatiosPreetha Achuthan0Ganapathy Ganesh Prabhu1George Gabriel Vimal Arokiaraj2Panneerselvam Arul Sivanantham3Subramanian Suthagar4Civil and Architectural Engineering SectionDepartment of Civil EngineeringDepartment of Civil EngineeringCivil and Architectural Engineering SectionDepartment of Mechanical EngineeringThe impacts of three diameter/thickness (D/t) ratios (21.22, 25.46, and 31.83) and concrete strengths (40 N/mm2, 50 N/mm2, and 60 N/mm2) on the strength capabilities of concrete-filled steel tubular (CFST) columns are investigated in this study. The central composite design (CCD) of the response surface methodology (RSM) was used to design the trials in order to complete the tests in a cost-effective manner. 13 (9 distinct tests) columns were evaluated according to the CCD experimental design, and the failure mode of the specimens, load–deformation behavior, and ultimate strength capacity were investigated. Concrete strength improves, resulting in a decrease in steel tube confinement on the core. Because the steel tube longitudinal compressive stress (fsl) increases as the D/t ratio lowers, the confinement is reduced by inhibiting the circumferential tensile stress (fsc). The Reynolds stress model’s, analysis of variance (ANOVA), Pareto chart, and contour plot demonstrated that the column D/t ratio, rather than the in-filled concrete strength, has a considerable impact on the CFST column’s strength capability. The proposed design models in different international codes and literature were evaluated for their effectiveness in predicting the strength capacities of CFST columns subjected to axial compression load. Using regression analysis, a simple design model was suggested to predict the axial strength capacities of CFST short columns, taking into account material strength and column shape. In comparison to other existing and suggested design models, the proposed design model of the present study delivers a more accurate and stable forecast.http://dx.doi.org/10.1155/2022/9170525 |
| spellingShingle | Preetha Achuthan Ganapathy Ganesh Prabhu George Gabriel Vimal Arokiaraj Panneerselvam Arul Sivanantham Subramanian Suthagar Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t Ratios Advances in Materials Science and Engineering |
| title | Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t Ratios |
| title_full | Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t Ratios |
| title_fullStr | Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t Ratios |
| title_full_unstemmed | Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t Ratios |
| title_short | Axial Compression Performance of Concrete-Filled Steel Tubular Columns with Different D/t Ratios |
| title_sort | axial compression performance of concrete filled steel tubular columns with different d t ratios |
| url | http://dx.doi.org/10.1155/2022/9170525 |
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