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为改善传统套筒灌浆接头(钢筋对接连接)的施工便利性,在已研发的Ⅰ型和Ⅲ型套筒灌浆搭接接头(内径大、施工方便)的基础上,进行了一片现浇剪力墙和两片纵筋采用Ⅰ型与Ⅲ型套筒灌浆搭接连接的预制剪力墙1:1模型的拟静力试验。得到了剪力墙的荷载-位移滞回曲线,测量了套筒横向应变、套筒上端和下端区域的钢筋应变。试验结果表明:现浇墙初始裂缝出现在墙体底部,预制墙由于套筒的竖向约束,初始裂缝出现在套筒的上方;极限状态时,现浇墙体两侧根部混凝土压碎,预制墙体套筒上方混凝
In order to improve the construction convenience of traditional sleeve grouting joints (steel butt connection), a cast-in-place shear force was developed on the basis of grouted joints of type I and type III bushings (large inner diameter and convenient construction) Quasi-static test of 1: 1 model of prefabricated shear wall connected by type I and type III sleeve grouting. The load-displacement hysteretic curve of the shear wall is obtained, and the lateral strain of the sleeve and the strain of the rebars in the upper and lower ends of the sleeve are measured. The experimental results show that the initial cracks in the cast-in-situ wall appear at the bottom of the wall, and the initial cracks appear above the sleeve due to the vertical restraint of the sleeve. In the limit state, the concrete at both sides of the cast- Concrete wall above the sleeve