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采用钢筋混凝土接缝连接梁来实现预制墙体竖向钢筋的连续性连接。通过6个高宽比为1.7、不同截面高度和位置的接缝连接梁预制混凝土剪力墙的低周反复加载试验,分析了试件的破坏形态、顶点荷载-位移滞回曲线、承载力、变形能力、刚度退化等特性,并与整体现浇墙体进行对比。试验结果表明:预制墙体试件与整体现浇墙体试件的破坏模式、破坏形态基本相同,均为墙体角部混凝土压碎、钢筋拉断或屈曲;预制墙体试件的水平承载力相当,略低于现浇墙体,接缝连接梁的位置及截面高度对承载力有一定程度的影响;预制墙体试件的变形能力略小于现浇墙体试件,但极限位移角均超过1/100;接缝连接梁可以有效传递荷载。
The use of reinforced concrete seams connecting beams to achieve continuous precast vertical connection of the wall. Through six low-cycle repeated loading tests of precast concrete shear walls with six aspect ratios of 1.7 and different cross-section heights and locations, the damage morphology, peak load-displacement hysteresis curve, bearing capacity, Deformation capacity, stiffness degradation and other characteristics, and compared with the overall cast-in-wall. The test results show that the damage modes and the failure modes of the precast wall specimens and the whole cast-in-place wall specimens are basically the same, all of them are crushed by concrete in the corners of the wall, and the steel bars are broken or buckled. The horizontal load of prefabricated wall specimens The strength of the prefabricated wall specimens is slightly lower than that of the cast-in-situ wall specimens, but the limit displacement angle Are more than 1/100; seam connection beam can effectively transmit the load.