Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed Concrete
Desert sand foamed concrete (DSFC), which offers advantages, such as fire resistance, sound insulation, construction convenience, and environmental benefits, has not been used in cold-formed steel (CFS) composite floors. In this study, four full-scale specimens were designed and tested under four-po...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/5/1217 |
| _version_ | 1797600751725314048 |
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| author | Bin Yao Yu Shi Weiyong Wang Qiang Wang Zhiyou Hu |
| author_facet | Bin Yao Yu Shi Weiyong Wang Qiang Wang Zhiyou Hu |
| author_sort | Bin Yao |
| collection | DOAJ |
| description | Desert sand foamed concrete (DSFC), which offers advantages, such as fire resistance, sound insulation, construction convenience, and environmental benefits, has not been used in cold-formed steel (CFS) composite floors. In this study, four full-scale specimens were designed and tested under four-point bending to investigate the effect of foamed concrete filling and holes. The load–deflection curves and strain distribution at mid-span were measured and analyzed. The experimental results indicated that the failure modes of the CFS composite floors were local buckling at the top flange for specimens without holes and tensile failure at the bottom flange for specimens with holes, respectively, which differed from the web crippling observed in non-composite floors. Moreover, due to the presence of foamed concrete, the flexural stiffness was significantly improved by 117.6% and 73.6% for the specimens without holes and with holes, respectively, while ultimate capacity increased by 224.9% and 121.8%, respectively. Through the nonlinear finite element models validated against experimental results, it was found that the flexural behavior was improved with the increase in CFS thickness and foamed concrete strength. The impact of the holes was not obvious for specimens infilled with holes. |
| first_indexed | 2024-03-11T03:52:20Z |
| format | Article |
| id | doaj.art-0a1e3ab47c0849c094377b68248b8917 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T03:52:20Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj.art-0a1e3ab47c0849c094377b68248b89172023-11-18T00:45:09ZengMDPI AGBuildings2075-53092023-05-01135121710.3390/buildings13051217Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed ConcreteBin Yao0Yu Shi1Weiyong Wang2Qiang Wang3Zhiyou Hu4Guiyang Engineering Corporation Limited of Power China, Guiyang 550081, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaGuiyang Engineering Corporation Limited of Power China, Guiyang 550081, ChinaGuiyang Engineering Corporation Limited of Power China, Guiyang 550081, ChinaDesert sand foamed concrete (DSFC), which offers advantages, such as fire resistance, sound insulation, construction convenience, and environmental benefits, has not been used in cold-formed steel (CFS) composite floors. In this study, four full-scale specimens were designed and tested under four-point bending to investigate the effect of foamed concrete filling and holes. The load–deflection curves and strain distribution at mid-span were measured and analyzed. The experimental results indicated that the failure modes of the CFS composite floors were local buckling at the top flange for specimens without holes and tensile failure at the bottom flange for specimens with holes, respectively, which differed from the web crippling observed in non-composite floors. Moreover, due to the presence of foamed concrete, the flexural stiffness was significantly improved by 117.6% and 73.6% for the specimens without holes and with holes, respectively, while ultimate capacity increased by 224.9% and 121.8%, respectively. Through the nonlinear finite element models validated against experimental results, it was found that the flexural behavior was improved with the increase in CFS thickness and foamed concrete strength. The impact of the holes was not obvious for specimens infilled with holes.https://www.mdpi.com/2075-5309/13/5/1217cold-formed steelcomposite floorflexural behaviordesert sand foamed concretefour-point bending test |
| spellingShingle | Bin Yao Yu Shi Weiyong Wang Qiang Wang Zhiyou Hu Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed Concrete Buildings cold-formed steel composite floor flexural behavior desert sand foamed concrete four-point bending test |
| title | Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed Concrete |
| title_full | Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed Concrete |
| title_fullStr | Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed Concrete |
| title_full_unstemmed | Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed Concrete |
| title_short | Flexural Behavior of Cold-Formed Steel Composite Floor Infilled with Desert Sand Foamed Concrete |
| title_sort | flexural behavior of cold formed steel composite floor infilled with desert sand foamed concrete |
| topic | cold-formed steel composite floor flexural behavior desert sand foamed concrete four-point bending test |
| url | https://www.mdpi.com/2075-5309/13/5/1217 |
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