装配式钢-混组合梁的抗剪连接性能研究

王宁; 闫敬良; 刘晓刚; 岳清瑞; 郑明召

doi:10.13204/j.gyjzg22030601

装配式钢-混组合梁的抗剪连接性能研究

doi: 10.13204/j.gyjzg22030601

1. 北京工业大学城市建设学部, 北京 100124;
2. 北京科技大学土木与资源工程学院, 北京 100083;
3. 中冶建筑研究总院有限公司, 北京 100088

基金项目:

国家自然科学基金项目(51890903)

北京市科技新星计划项目(Z201100006820044)

详细信息

作者简介:
王宁,男,1996年出生,硕士研究生

通讯作者:
刘晓刚,教授,liuxiaogang@ustb.edu.cn。

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- 文章访问数: 113
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- 被引次数: 9
出版历程
- 收稿日期: 2022-03-06
- 网络出版日期: 2023-02-06

Research on Shear Connection Performance of Prefabricated Steel-Concrete Composite Beams

1. Faculty of Urban Construction, Beijing University of Technology, Beijing 100124, China;
2. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China

摘要

摘要: 为研究新型装配式钢-混组合梁的抗剪连接性能,设计了四类抗剪连接构造,包括局部叠合式连接、UHPC矩形后浇带连接、UHPC齿槽形后浇带连接、带后置抗剪钢筋的齿槽形后浇带连接,制作了10个试件并进行静力推出试验;通过试验现象与数据结果,分析了栓钉直径、后浇混凝土强度、抗剪槽、后置抗剪钢筋等不同构造对组合梁破坏形态、裂缝模式、荷载-滑移特性和极限承载力的影响。研究结果表明:装配式组合梁的抗剪连接承载力随着栓钉直径和后浇混凝土强度的增大而提高;后浇部分采用UHPC齿槽形剪力键和齿槽内放置抗剪钢筋可极大提高试件的抗剪承载力;后浇带连接UHPC组合梁的纵向抗剪机理和破坏形态不同于传统组合梁,在界面剪力作用下,预制-后浇界面成为薄弱区域并先于栓钉和栓钉周围混凝土发生破坏。
- 装配式钢-混组合梁 /
- 抗剪连接 /
- 局部叠合 /
- 超高性能混凝土 /
- 抗剪齿槽
Abstract: In order to investigate the performance of shear connections of new profabricated steel-concrete composite beam, 4 types of shear connection construction were designed, including connections with local laminated region, with UHPC (ultra-high performance concrete) post-casting belt, with UHPC slotted post-casting belt and with slotted post-casting belt having post-placed shear rebar. Totally 10 specimens were fabricated and tested by static push-out test. Using the experimental phenomena and test data, the effects of different configurations, including diameter of studs, strength of post-casting concrete, shear slot and shear rebar in slot, on the failure mode, crack mode, load-slip characteristics and ultimate bearing capacity of prefabricated composite beams were analyzed. The results indicated the bearing capacity of prefabricated composite beams increased with the increase of stud diameter and post-casting concrete strength. UHPC post-casting belt configuration and post-placed shear rebars could significantly improve the shear capacity of specimens. The longitudinal shear mechanism of the prefabricated composite beam with post-casted UHPC was different from the traditional composite beam, and the interface between prefabricated slab and post-casted UHPC might become weak area under the interfacial shear force, and fail before studs or the concrete around studs.
- prefabricated steel-concrete beam /
- shear connection /
- local laminated region /
- UHPC /
- shear slot

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参考文献(23)

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2.	张庭杰，尹云厅. 装配式组合梁新型剪力键受力性能试验研究. 河南城建学院学报. 2024(03): 16-22 . 百度学术
3.	吴锦鹏，吴加杰，曹志鹏，方壮城，姜海波. 可拆卸式钢-预制UHPC组合梁中高强螺栓剪力键的抗剪性能试验. 福州大学学报(自然科学版). 2024(04): 462-470 . 百度学术
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装配式钢-混组合梁的抗剪连接性能研究

doi: 10.13204/j.gyjzg22030601

作者简介:
王宁,男,1996年出生,硕士研究生

通讯作者:
刘晓刚,教授,liuxiaogang@ustb.edu.cn。

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Research on Shear Connection Performance of Prefabricated Steel-Concrete Composite Beams

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装配式钢-混组合梁的抗剪连接性能研究

doi: 10.13204/j.gyjzg22030601

作者简介: 王宁,男,1996年出生,硕士研究生

通讯作者: 刘晓刚,教授,liuxiaogang@ustb.edu.cn。

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出版历程

Research on Shear Connection Performance of Prefabricated Steel-Concrete Composite Beams

期刊类型引用(5)

其他类型引用(4)

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出版历程

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期刊在线

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友情链接

作者简介:
王宁,男,1996年出生,硕士研究生

通讯作者:
刘晓刚,教授,liuxiaogang@ustb.edu.cn。