Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic Loading
As a common rebar connector in prefabricated projects, the grouted sleeve connection (GSC) affects structural performance during fire and seismic events. However, the combined impact of both factors may alter GSC performance, although most studies concentrate on high temperature or loading schemes....
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MDPI AG
2025-03-01
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| Online Access: | https://www.mdpi.com/2075-5309/15/7/1014 |
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| author | Wangxi Zhang Jialu Wang Yibo Zhou Jia Wang Weijian Yi |
| author_facet | Wangxi Zhang Jialu Wang Yibo Zhou Jia Wang Weijian Yi |
| author_sort | Wangxi Zhang |
| collection | DOAJ |
| description | As a common rebar connector in prefabricated projects, the grouted sleeve connection (GSC) affects structural performance during fire and seismic events. However, the combined impact of both factors may alter GSC performance, although most studies concentrate on high temperature or loading schemes. Few quantitative models are available for predicting the mechanical characteristics of post-fire GSCs under unidirectional tension, let alone cyclic loading. In this study, 18 GSC specimens were made and subjected to heating, water cooling, and cyclic loading. Thermal and mechanical loads caused rebar fracture below 400 °C, but pullout failure occurred beyond 400 °C. GSC performance declined as temperature and loading cycles increased. Based on this test and several previous investigations, predictive models with guaranteed rates for GSC performance after high temperature by water cooling under uniaxial and cyclic loading were constructed. According to the predictive models, the four parameters (including yield strength, ultimate strength, elastic modulus, and ultimate strain) of the GSCs using HRB400 rebars can be obtained. |
| format | Article |
| id | doaj-art-6ff4e55e69844a24b5375fc5bae2d82c |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-6ff4e55e69844a24b5375fc5bae2d82c2025-08-20T03:06:24ZengMDPI AGBuildings2075-53092025-03-01157101410.3390/buildings15071014Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic LoadingWangxi Zhang0Jialu Wang1Yibo Zhou2Jia Wang3Weijian Yi4Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Changsha 410082, ChinaCollege of Civil Engineering, Hunan University, Changsha 410082, ChinaCollege of Civil Engineering, Hunan University, Changsha 410082, ChinaCollege of Civil Engineering, Hunan University, Changsha 410082, ChinaKey Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Changsha 410082, ChinaAs a common rebar connector in prefabricated projects, the grouted sleeve connection (GSC) affects structural performance during fire and seismic events. However, the combined impact of both factors may alter GSC performance, although most studies concentrate on high temperature or loading schemes. Few quantitative models are available for predicting the mechanical characteristics of post-fire GSCs under unidirectional tension, let alone cyclic loading. In this study, 18 GSC specimens were made and subjected to heating, water cooling, and cyclic loading. Thermal and mechanical loads caused rebar fracture below 400 °C, but pullout failure occurred beyond 400 °C. GSC performance declined as temperature and loading cycles increased. Based on this test and several previous investigations, predictive models with guaranteed rates for GSC performance after high temperature by water cooling under uniaxial and cyclic loading were constructed. According to the predictive models, the four parameters (including yield strength, ultimate strength, elastic modulus, and ultimate strain) of the GSCs using HRB400 rebars can be obtained.https://www.mdpi.com/2075-5309/15/7/1014grouted sleeve connection (GSC)cyclic loadinghigh temperaturewater coolingmechanical performancepredictive model |
| spellingShingle | Wangxi Zhang Jialu Wang Yibo Zhou Jia Wang Weijian Yi Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic Loading Buildings grouted sleeve connection (GSC) cyclic loading high temperature water cooling mechanical performance predictive model |
| title | Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic Loading |
| title_full | Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic Loading |
| title_fullStr | Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic Loading |
| title_full_unstemmed | Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic Loading |
| title_short | Bearing Behaviors of Grouted Sleeve Connections After High Temperature Followed by Water Cooling Under Cyclic Loading |
| title_sort | bearing behaviors of grouted sleeve connections after high temperature followed by water cooling under cyclic loading |
| topic | grouted sleeve connection (GSC) cyclic loading high temperature water cooling mechanical performance predictive model |
| url | https://www.mdpi.com/2075-5309/15/7/1014 |
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