(湖南工学院土木与建筑工程学院， 衡阳 421002)

［摘要］钢筋的有效连接是装配式结构必须解决的核心问题之一。采用符合《钢丝绳夹》（GB/T 5976—2006）不锈钢卡件将钢筋进行机械搭接，研究此类连接方式的有效性。分别对采用两卡件和三卡件钢筋机械搭接的试件进行单向拉伸试验，试验表明：提高卡件数量、增加U型卡件与钢筋之间接触面积，对于提高钢筋搭接连接的可靠性具有重要意义；当采用三卡件时，钢筋的连接强度大于母材的强度，搭接试件的应力-应变曲线与母材应力-应变曲线基本一致，满足工程应用的力学要求，可应用于装配式剪力墙受力钢筋的等强连接。 

［关键词］钢筋连接；机械搭接；装配式剪力墙；试验研究 

中图分类号：TU398+.2 文献标识码：A文章编号：1002-848X(2021)20-0110-05

Study on axial tensile test of mechanical lapping of steel bars in prefabricated shear walls 

YOU  Chunhua,  HE  Gen,  MEI  Hua,  SU  Wanlin,  HOU  Lei 

(School of Civil and Architecture Engineering，Hunan Institute of Technology, Hengyang 421002，China) 

Abstract: The effective connection of steel bars is one of the core problems that must be solved in prefabricated structures. Steel bars were mechanically overlapped by stainless steel grips in accordance with Wire Rope Grips (GB/T 5976—2006), and the effectiveness of this kind of connection method was studied. The unidirectional tensile tests were carried out on the specimens with two and three grips of  mechanical lapping of steel bars. The results show that increasing the number of grips and increasing the contact area between U-shaped grips and steel bar is of great significance to improving the reliability of steel bar lap connection. When three grips are used, the connection strength of steel bar is greater than that of the base metal, and the stress-strain curve of the lap specimen is basically the same as that of the base metal, which meets the mechanical requirements of engineering application and can be applied to the equal-strength connection of the stressed steel bar of prefabricated shear wall. 

Keywords:steel bar connection； mechanical lap； prefabricated shear wall； experimental research

*衡阳市科技局产学研项目(2019jhzx1173)，湖南省教育厅科研项目(19C0526)，衡阳市科技局产学研项目（202002072538）。

 作者简介：游春华，博士，副教授，Email:2005001486@ hnit.edu.cn。