Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams
This paper investigates the bending resistance of an innovative lightweight composite floor system, LWT-FLOOR. The system consists of built-up cold-formed steel elements that are spot-welded and connected to the concrete slab using demountable shear connectors. As the system under investigation is n...
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MDPI AG
2023-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/13/7397 |
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| author | Andrea Rajić Ivan Lukačević Davor Skejić Ivan Ćurković |
| author_facet | Andrea Rajić Ivan Lukačević Davor Skejić Ivan Ćurković |
| author_sort | Andrea Rajić |
| collection | DOAJ |
| description | This paper investigates the bending resistance of an innovative lightweight composite floor system, LWT-FLOOR. The system consists of built-up cold-formed steel elements that are spot-welded and connected to the concrete slab using demountable shear connectors. As the system under investigation is new, the existing standards do not provide guidelines for calculating its bending resistance. This paper gives an overview of different analytical approaches and a comparison of calculated results using bending capacities from the numerical parametric study. Within the numerical parametric study, the influence of the height of the steel beam, the type and degree of shear connection, the connection between the steel elements, and the thickness of the corrugated web used for the bending capacity are investigated. Numerical results for the full shear connections resulted in lower bending capacities than the analytically calculated plastic bending resistances. However, numerically obtained bending capacities for partial shear connections were found to exceed the calculated characteristic non-linear bending resistances and bending resistances for partial shear connections. The obtained results will comprise the basis for further experimental tests, which will support the search for an optimal analytical approach for the bending resistance of the proposed composite system. |
| first_indexed | 2024-03-11T01:48:26Z |
| format | Article |
| id | doaj.art-c9917eb8ed044155bc67f2b7e4c2cde0 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T01:48:26Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-c9917eb8ed044155bc67f2b7e4c2cde02023-11-18T16:05:49ZengMDPI AGApplied Sciences2076-34172023-06-011313739710.3390/app13137397Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite BeamsAndrea Rajić0Ivan Lukačević1Davor Skejić2Ivan Ćurković3Faculty of Civil Engineering, University of Zagreb, Fra Andrije Kačića-Miošića 26, 10000 Zagreb, CroatiaFaculty of Civil Engineering, University of Zagreb, Fra Andrije Kačića-Miošića 26, 10000 Zagreb, CroatiaFaculty of Civil Engineering, University of Zagreb, Fra Andrije Kačića-Miošića 26, 10000 Zagreb, CroatiaFaculty of Civil Engineering, University of Zagreb, Fra Andrije Kačića-Miošića 26, 10000 Zagreb, CroatiaThis paper investigates the bending resistance of an innovative lightweight composite floor system, LWT-FLOOR. The system consists of built-up cold-formed steel elements that are spot-welded and connected to the concrete slab using demountable shear connectors. As the system under investigation is new, the existing standards do not provide guidelines for calculating its bending resistance. This paper gives an overview of different analytical approaches and a comparison of calculated results using bending capacities from the numerical parametric study. Within the numerical parametric study, the influence of the height of the steel beam, the type and degree of shear connection, the connection between the steel elements, and the thickness of the corrugated web used for the bending capacity are investigated. Numerical results for the full shear connections resulted in lower bending capacities than the analytically calculated plastic bending resistances. However, numerically obtained bending capacities for partial shear connections were found to exceed the calculated characteristic non-linear bending resistances and bending resistances for partial shear connections. The obtained results will comprise the basis for further experimental tests, which will support the search for an optimal analytical approach for the bending resistance of the proposed composite system.https://www.mdpi.com/2076-3417/13/13/7397numerical analysisanalytical approachesbending resistancecomposite beamcold-formed steel sectionsdemountable shear connection |
| spellingShingle | Andrea Rajić Ivan Lukačević Davor Skejić Ivan Ćurković Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams Applied Sciences numerical analysis analytical approaches bending resistance composite beam cold-formed steel sections demountable shear connection |
| title | Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams |
| title_full | Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams |
| title_fullStr | Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams |
| title_full_unstemmed | Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams |
| title_short | Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams |
| title_sort | numerical study on the bending resistance of lightweight built up steel concrete composite beams |
| topic | numerical analysis analytical approaches bending resistance composite beam cold-formed steel sections demountable shear connection |
| url | https://www.mdpi.com/2076-3417/13/13/7397 |
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