Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural Members
The bond-slip behavior between cold-formed thin-walled steel (CTS) and foamed concrete (FC) is a critical issue in the mechanical performance of FC-filled CTS composite wall structures. Thus, this study provides experimental and theoretical research on the bond-slip behavior between CTS and FC. A to...
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2024-11-01
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| author | Haitao Chen Yishun Wang Zhifeng Xu Fengwei Shi Haifeng Lv Yaoyong Zhang Yanze Sun |
| author_facet | Haitao Chen Yishun Wang Zhifeng Xu Fengwei Shi Haifeng Lv Yaoyong Zhang Yanze Sun |
| author_sort | Haitao Chen |
| collection | DOAJ |
| description | The bond-slip behavior between cold-formed thin-walled steel (CTS) and foamed concrete (FC) is a critical issue in the mechanical performance of FC-filled CTS composite wall structures. Thus, this study provides experimental and theoretical research on the bond-slip behavior between CTS and FC. A total of eleven specimens were tested using push-out configurations, considering the number of web holes, foamed concrete (FC) strength, anchorage length, and CTS section splice form. A constitutive model for bond-slip was proposed, and the regression formulas for accurately predicting the characteristic bond strength between CTS and foamed concrete were established. A finite element model was developed to investigate the bond-slip mechanism at the interface between CTS and FC. The bond-slip constitutive model accurately fits the experimental and finite element results. The results indicate that the ultimate bond strength of the specimens increases with the number of web holes; when the number of web holes reaches two, the ultimate bond strength is 155.4% of that of the non-perforated specimens. As the concrete strength increases from 3.43 MPa to 11.26 MPa, the ultimate bond strength of specimens with two web holes improves by 23.1%, while non-perforated specimens have a 54.7% enhancement. When the anchorage length is extended from 200 mm to 400 mm, the ultimate bond strength decreases by 29.3%. Additionally, when steel sections are joined in a double-span I form, the bond strength increases by 91.6% and 95.8% compared to the single-span form and the double-span box form, respectively. |
| format | Article |
| id | doaj-art-55ccec991fc4446da0a114ea8f2adf75 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-11-01 |
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| series | Buildings |
| spelling | doaj-art-55ccec991fc4446da0a114ea8f2adf752024-12-27T14:15:13ZengMDPI AGBuildings2075-53092024-11-011412375110.3390/buildings14123751Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural MembersHaitao Chen0Yishun Wang1Zhifeng Xu2Fengwei Shi3Haifeng Lv4Yaoyong Zhang5Yanze Sun6Shandong Provincial Key Laboratory of Civil Engineering Disater Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disater Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disater Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disater Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disater Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disater Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disater Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaThe bond-slip behavior between cold-formed thin-walled steel (CTS) and foamed concrete (FC) is a critical issue in the mechanical performance of FC-filled CTS composite wall structures. Thus, this study provides experimental and theoretical research on the bond-slip behavior between CTS and FC. A total of eleven specimens were tested using push-out configurations, considering the number of web holes, foamed concrete (FC) strength, anchorage length, and CTS section splice form. A constitutive model for bond-slip was proposed, and the regression formulas for accurately predicting the characteristic bond strength between CTS and foamed concrete were established. A finite element model was developed to investigate the bond-slip mechanism at the interface between CTS and FC. The bond-slip constitutive model accurately fits the experimental and finite element results. The results indicate that the ultimate bond strength of the specimens increases with the number of web holes; when the number of web holes reaches two, the ultimate bond strength is 155.4% of that of the non-perforated specimens. As the concrete strength increases from 3.43 MPa to 11.26 MPa, the ultimate bond strength of specimens with two web holes improves by 23.1%, while non-perforated specimens have a 54.7% enhancement. When the anchorage length is extended from 200 mm to 400 mm, the ultimate bond strength decreases by 29.3%. Additionally, when steel sections are joined in a double-span I form, the bond strength increases by 91.6% and 95.8% compared to the single-span form and the double-span box form, respectively.https://www.mdpi.com/2075-5309/14/12/3751cold-formed thin-walled steelbond-slip behaviorfoamed concretepush-out testbond-slip constitutive relationship |
| spellingShingle | Haitao Chen Yishun Wang Zhifeng Xu Fengwei Shi Haifeng Lv Yaoyong Zhang Yanze Sun Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural Members Buildings cold-formed thin-walled steel bond-slip behavior foamed concrete push-out test bond-slip constitutive relationship |
| title | Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural Members |
| title_full | Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural Members |
| title_fullStr | Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural Members |
| title_full_unstemmed | Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural Members |
| title_short | Bond-Slip Behavior Between C-Shaped Steel and Foamed Concrete in CTS Composite Structural Members |
| title_sort | bond slip behavior between c shaped steel and foamed concrete in cts composite structural members |
| topic | cold-formed thin-walled steel bond-slip behavior foamed concrete push-out test bond-slip constitutive relationship |
| url | https://www.mdpi.com/2075-5309/14/12/3751 |
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