Experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns
Abstract Concrete-filled double-skin steel tubular (CFDST) columns have become widely utilized in building construction and bridges, thanks to their exceptional structural capabilities. Therefore, this study investigates the axial compressive behavior of square CFDST columns. The study aims to explo...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-85585-z |
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| author | Aya Mohsen Handousa Mohamed Abdellatief Fikry Abdo Salem Nabil Mahmoud Mohamed Ghannam |
| author_facet | Aya Mohsen Handousa Mohamed Abdellatief Fikry Abdo Salem Nabil Mahmoud Mohamed Ghannam |
| author_sort | Aya Mohsen Handousa |
| collection | DOAJ |
| description | Abstract Concrete-filled double-skin steel tubular (CFDST) columns have become widely utilized in building construction and bridges, thanks to their exceptional structural capabilities. Therefore, this study investigates the axial compressive behavior of square CFDST columns. The study aims to explore the influence of external and internal plate shapes (flat or corrugated plates) and different widths of internal steel tubes on the axial compressive behavior. The effects of varying internal widths of the internal steel tube (60 mm, 116 mm, and 160 mm) on the performance of CFDST columns were examined. Additionally, the study compared the performance of concrete-filled steel tubular (CFST) and CFDST columns with external flat or corrugated plates. The findings indicated that incorporating internal corrugated plates notably improved both the load-carrying capacity and ductility of the specimens. Notably, CFDST columns featuring corrugated internal plates (116 mm width) exhibited strength enhancements of 25.3% and 7.4% compared to internal widths of 160 mm and 60 mm, respectively. Furthermore, the study proposed two machine-learning models, namely Artificial Neural Network (ANN) and Gaussian Process Regression (GPR), to estimate the ultimate compressive strength of square CFDST columns. The findings indicated that the GPR model outperformed the ANN model in predicting the bearing capacity of square CFDST columns. Additionally, the Shapley Additive Explanation technique was employed for feature analysis. The outcomes of this analysis revealed that parameters such as section width and concrete strength positively influence the compressive strength index. |
| format | Article |
| id | doaj-art-eeed865843f2447e98f12ed89628d4ce |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-eeed865843f2447e98f12ed89628d4ce2025-01-19T12:19:23ZengNature PortfolioScientific Reports2045-23222025-01-0115112610.1038/s41598-025-85585-zExperimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columnsAya Mohsen Handousa0Mohamed Abdellatief1Fikry Abdo Salem2Nabil Mahmoud3Mohamed Ghannam4Department of Structural Engineering, Higher Future Institute for Engineering and Technology in MansouraDepartment of Structural Engineering, Higher Future Institute for Engineering and Technology in MansouraDepartment of Structural Engineering, Faculty of Engineering, Mansoura UniversityDepartment of Structural Engineering, Faculty of Engineering, Mansoura UniversityDepartment of Structural Engineering, Faculty of Engineering, Mansoura UniversityAbstract Concrete-filled double-skin steel tubular (CFDST) columns have become widely utilized in building construction and bridges, thanks to their exceptional structural capabilities. Therefore, this study investigates the axial compressive behavior of square CFDST columns. The study aims to explore the influence of external and internal plate shapes (flat or corrugated plates) and different widths of internal steel tubes on the axial compressive behavior. The effects of varying internal widths of the internal steel tube (60 mm, 116 mm, and 160 mm) on the performance of CFDST columns were examined. Additionally, the study compared the performance of concrete-filled steel tubular (CFST) and CFDST columns with external flat or corrugated plates. The findings indicated that incorporating internal corrugated plates notably improved both the load-carrying capacity and ductility of the specimens. Notably, CFDST columns featuring corrugated internal plates (116 mm width) exhibited strength enhancements of 25.3% and 7.4% compared to internal widths of 160 mm and 60 mm, respectively. Furthermore, the study proposed two machine-learning models, namely Artificial Neural Network (ANN) and Gaussian Process Regression (GPR), to estimate the ultimate compressive strength of square CFDST columns. The findings indicated that the GPR model outperformed the ANN model in predicting the bearing capacity of square CFDST columns. Additionally, the Shapley Additive Explanation technique was employed for feature analysis. The outcomes of this analysis revealed that parameters such as section width and concrete strength positively influence the compressive strength index.https://doi.org/10.1038/s41598-025-85585-zCorrugated concrete-filled steel tubesCorrugated-columnsSquare CFDST columnsUltimate axial strengthInternal square tubes |
| spellingShingle | Aya Mohsen Handousa Mohamed Abdellatief Fikry Abdo Salem Nabil Mahmoud Mohamed Ghannam Experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns Scientific Reports Corrugated concrete-filled steel tubes Corrugated-columns Square CFDST columns Ultimate axial strength Internal square tubes |
| title | Experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns |
| title_full | Experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns |
| title_fullStr | Experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns |
| title_full_unstemmed | Experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns |
| title_short | Experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns |
| title_sort | experimental and analytical study on axial behaviour of square corrugated concrete filled single and double skin tube stub columns |
| topic | Corrugated concrete-filled steel tubes Corrugated-columns Square CFDST columns Ultimate axial strength Internal square tubes |
| url | https://doi.org/10.1038/s41598-025-85585-z |
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