Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel Bars
The torsional behavior of twelve concrete-filled steel tube (CFST) specimens was experimentally investigated. CFST specimens were reinforced by internal cross-rods with different spacing (0, 50, 100, 150, 200, and 250) mm, different thicknesses of the steel tube (1.5 and 2) mm, and a compressive st...
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Tikrit University
2024-11-01
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| Series: | Tikrit Journal of Engineering Sciences |
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| Online Access: | https://tj-es.com/ojs/index.php/tjes/article/view/1205 |
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| author | Sufyan E. Mutlag Assim M. Lateef |
| author_facet | Sufyan E. Mutlag Assim M. Lateef |
| author_sort | Sufyan E. Mutlag |
| collection | DOAJ |
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The torsional behavior of twelve concrete-filled steel tube (CFST) specimens was experimentally investigated. CFST specimens were reinforced by internal cross-rods with different spacing (0, 50, 100, 150, 200, and 250) mm, different thicknesses of the steel tube (1.5 and 2) mm, and a compressive strength of 65 MPa (high strength concrete). Each sample was tested, and the results were examined. According to the results, the infill concrete prevented buckling failure in CFST specimens. The steel tube and concrete worked together since cutting steel tubes caused diagonal cracks in the infill concrete of CFST specimens. The results also showed that the CFST's torsional moment capacity increased due to the concrete infill, further aiding the steel tubes' performance. Internal stiffening in the steel tubes and concrete infill improved the failure mode, mechanical properties, and CFST specimens’ behavior under torsion.
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| format | Article |
| id | doaj-art-e690ea0c05964b9894d91cdc8a7c27b3 |
| institution | OA Journals |
| issn | 1813-162X 2312-7589 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Tikrit University |
| record_format | Article |
| series | Tikrit Journal of Engineering Sciences |
| spelling | doaj-art-e690ea0c05964b9894d91cdc8a7c27b32025-08-20T02:38:46ZengTikrit UniversityTikrit Journal of Engineering Sciences1813-162X2312-75892024-11-0131410.25130/tjes.31.4.2Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel BarsSufyan E. Mutlag0Assim M. Lateef1https://orcid.org/0000-0002-5215-2925Department of Civil Engineering, College of Engineering, Tikrit University, Tikrit, Iraq.Department of Civil Engineering, College of Engineering, Tikrit University, Tikrit, Iraq. The torsional behavior of twelve concrete-filled steel tube (CFST) specimens was experimentally investigated. CFST specimens were reinforced by internal cross-rods with different spacing (0, 50, 100, 150, 200, and 250) mm, different thicknesses of the steel tube (1.5 and 2) mm, and a compressive strength of 65 MPa (high strength concrete). Each sample was tested, and the results were examined. According to the results, the infill concrete prevented buckling failure in CFST specimens. The steel tube and concrete worked together since cutting steel tubes caused diagonal cracks in the infill concrete of CFST specimens. The results also showed that the CFST's torsional moment capacity increased due to the concrete infill, further aiding the steel tubes' performance. Internal stiffening in the steel tubes and concrete infill improved the failure mode, mechanical properties, and CFST specimens’ behavior under torsion. https://tj-es.com/ojs/index.php/tjes/article/view/1205Pure torsionInternal strengtheningHigh strength concreteCross-Rod (CR)Steel tube |
| spellingShingle | Sufyan E. Mutlag Assim M. Lateef Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel Bars Tikrit Journal of Engineering Sciences Pure torsion Internal strengthening High strength concrete Cross-Rod (CR) Steel tube |
| title | Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel Bars |
| title_full | Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel Bars |
| title_fullStr | Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel Bars |
| title_full_unstemmed | Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel Bars |
| title_short | Torsional Resistance of High Strength Concrete Filled Steel Tube Beams Stiffened Internally with Steel Bars |
| title_sort | torsional resistance of high strength concrete filled steel tube beams stiffened internally with steel bars |
| topic | Pure torsion Internal strengthening High strength concrete Cross-Rod (CR) Steel tube |
| url | https://tj-es.com/ojs/index.php/tjes/article/view/1205 |
| work_keys_str_mv | AT sufyanemutlag torsionalresistanceofhighstrengthconcretefilledsteeltubebeamsstiffenedinternallywithsteelbars AT assimmlateef torsionalresistanceofhighstrengthconcretefilledsteeltubebeamsstiffenedinternallywithsteelbars |