Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial Loading
Concrete-filled round-ended steel tubes (CFRTs) are a unique type of composite stub columns, which have the advantage of aesthetics and a well-distributed major–minor axis. Thus, the structure has been widely employed as piers and columns in bridges. To improve the mechanical performance of CFRTs wi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/14/3/846 |
| _version_ | 1797241704318763008 |
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| author | Jing Liu Tao Zhang Zhicheng Pan Fanjun Ma |
| author_facet | Jing Liu Tao Zhang Zhicheng Pan Fanjun Ma |
| author_sort | Jing Liu |
| collection | DOAJ |
| description | Concrete-filled round-ended steel tubes (CFRTs) are a unique type of composite stub columns, which have the advantage of aesthetics and a well-distributed major–minor axis. Thus, the structure has been widely employed as piers and columns in bridges. To improve the mechanical performance of CFRTs with a large length–width ratio and to enhance the restraint effect of steel tubes on concrete, this study investigates the compressive property of multi-chamber, concrete-filled, round-ended steel tubular (M-CFRT) stub columns using a combination of experimental and numerical analyses. A detailed compression test on eight specimens is conducted to examine the compressive property of M-CFRT stub columns. The study focuses on understanding the influence of some key parameters on ultimate bearing capacity, failure stage, damage modes, and ductility. Additionally, the accuracy of the finite element modeling method in simulating the ultimate bearing capacity of the structure is verified. Finally, the calculating formula for the ultimate bearing capacity of M-CFRT stub columns is proposed on the basis of the experimental and numerical findings. Results of the formula calculation are consistent with the experimental data. These research findings serve as a valuable reference for designing similar structures in engineering practice. |
| first_indexed | 2024-04-24T18:27:33Z |
| format | Article |
| id | doaj.art-072e3231565a4ea58df9874202529e8c |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-04-24T18:27:33Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-072e3231565a4ea58df9874202529e8c2024-03-27T13:29:42ZengMDPI AGBuildings2075-53092024-03-0114384610.3390/buildings14030846Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial LoadingJing Liu0Tao Zhang1Zhicheng Pan2Fanjun Ma3Key Laboratory of Green Building and Intelligent Construction in Higher Educational Institutions of Hunan Province, Hunan City University, Yiyang 413000, ChinaSchool of Civil Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450000, ChinaSinohydro Engineering Bureau 8 Co., Ltd., Changsha 410004, ChinaSinohydro Engineering Bureau 8 Co., Ltd., Changsha 410004, ChinaConcrete-filled round-ended steel tubes (CFRTs) are a unique type of composite stub columns, which have the advantage of aesthetics and a well-distributed major–minor axis. Thus, the structure has been widely employed as piers and columns in bridges. To improve the mechanical performance of CFRTs with a large length–width ratio and to enhance the restraint effect of steel tubes on concrete, this study investigates the compressive property of multi-chamber, concrete-filled, round-ended steel tubular (M-CFRT) stub columns using a combination of experimental and numerical analyses. A detailed compression test on eight specimens is conducted to examine the compressive property of M-CFRT stub columns. The study focuses on understanding the influence of some key parameters on ultimate bearing capacity, failure stage, damage modes, and ductility. Additionally, the accuracy of the finite element modeling method in simulating the ultimate bearing capacity of the structure is verified. Finally, the calculating formula for the ultimate bearing capacity of M-CFRT stub columns is proposed on the basis of the experimental and numerical findings. Results of the formula calculation are consistent with the experimental data. These research findings serve as a valuable reference for designing similar structures in engineering practice.https://www.mdpi.com/2075-5309/14/3/846concrete-filled round-ended steel tubular stub columnmulti-chamber steel tubeultimate bearing capacity |
| spellingShingle | Jing Liu Tao Zhang Zhicheng Pan Fanjun Ma Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial Loading Buildings concrete-filled round-ended steel tubular stub column multi-chamber steel tube ultimate bearing capacity |
| title | Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial Loading |
| title_full | Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial Loading |
| title_fullStr | Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial Loading |
| title_full_unstemmed | Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial Loading |
| title_short | Behavior of Concrete-Filled Steel Tube Columns with Multiple Chambers and Round-Ended Cross-Sections under Axial Loading |
| title_sort | behavior of concrete filled steel tube columns with multiple chambers and round ended cross sections under axial loading |
| topic | concrete-filled round-ended steel tubular stub column multi-chamber steel tube ultimate bearing capacity |
| url | https://www.mdpi.com/2075-5309/14/3/846 |
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