Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite Floor
To address the challenges of slow construction and high self-weight in steel–concrete composite floors for rural light steel frame structures in China, a new prefabricated floor system was developed. This system features prefabricated slabs made from recycled concrete, connected via reinforced shear...
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| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/13/2267 |
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| author | Jinliang Bian Jingwei Zhang Lidong Zhao Wei Gan Wanlin Cao |
| author_facet | Jinliang Bian Jingwei Zhang Lidong Zhao Wei Gan Wanlin Cao |
| author_sort | Jinliang Bian |
| collection | DOAJ |
| description | To address the challenges of slow construction and high self-weight in steel–concrete composite floors for rural light steel frame structures in China, a new prefabricated floor system was developed. This system features prefabricated slabs made from recycled concrete, connected via reinforced shear pocket joints. In seismic environments, assembly floor joints often become vulnerable points, making their shear resistance particularly crucial. This study investigated the shear performance of this new type of floor joint, examining the effects of various parameters such as joint configuration, stud diameter, recycled concrete strength, and grout strength. A refined finite element model was established for an in-depth parameter analysis. The research revealed stud–shear failure as the mode of floor joint failure under different design parameters. The detailed design of the new joint structure ensures safety in the floor joint area. Increasing stud diameter, recycled concrete strength, and grout strength all contributed to enhancing the joint’s shear capacity and stiffness, with stud diameter having the most significant impact. Higher recycled concrete strength improved shear capacity, although its influence decreased beyond a certain threshold. Optimal reserved hole diameter proved beneficial for enhancing joint shear performance, with a diameter of 40 mm showing superior performance. |
| format | Article |
| id | doaj-art-16ee0149ab4f4d4b852e4d354e67e60d |
| institution | Matheson Library |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-16ee0149ab4f4d4b852e4d354e67e60d2025-07-11T14:37:28ZengMDPI AGBuildings2075-53092025-06-011513226710.3390/buildings15132267Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite FloorJinliang Bian0Jingwei Zhang1Lidong Zhao2Wei Gan3Wanlin Cao4Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, ChinaTianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, ChinaChina Construction Eighth Engineering Division Co., Ltd., Shanghai 200135, ChinaTianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, ChinaFaculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaTo address the challenges of slow construction and high self-weight in steel–concrete composite floors for rural light steel frame structures in China, a new prefabricated floor system was developed. This system features prefabricated slabs made from recycled concrete, connected via reinforced shear pocket joints. In seismic environments, assembly floor joints often become vulnerable points, making their shear resistance particularly crucial. This study investigated the shear performance of this new type of floor joint, examining the effects of various parameters such as joint configuration, stud diameter, recycled concrete strength, and grout strength. A refined finite element model was established for an in-depth parameter analysis. The research revealed stud–shear failure as the mode of floor joint failure under different design parameters. The detailed design of the new joint structure ensures safety in the floor joint area. Increasing stud diameter, recycled concrete strength, and grout strength all contributed to enhancing the joint’s shear capacity and stiffness, with stud diameter having the most significant impact. Higher recycled concrete strength improved shear capacity, although its influence decreased beyond a certain threshold. Optimal reserved hole diameter proved beneficial for enhancing joint shear performance, with a diameter of 40 mm showing superior performance.https://www.mdpi.com/2075-5309/15/13/2267reinforced shear pocket jointsteel–recycled concrete composite floorshear performancepush-out testnumerical simulation analysis |
| spellingShingle | Jinliang Bian Jingwei Zhang Lidong Zhao Wei Gan Wanlin Cao Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite Floor Buildings reinforced shear pocket joint steel–recycled concrete composite floor shear performance push-out test numerical simulation analysis |
| title | Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite Floor |
| title_full | Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite Floor |
| title_fullStr | Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite Floor |
| title_full_unstemmed | Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite Floor |
| title_short | Shear Performance of Reinforced Shear Pocket Joint in Light Steel—Recycled Concrete Composite Floor |
| title_sort | shear performance of reinforced shear pocket joint in light steel recycled concrete composite floor |
| topic | reinforced shear pocket joint steel–recycled concrete composite floor shear performance push-out test numerical simulation analysis |
| url | https://www.mdpi.com/2075-5309/15/13/2267 |
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