竖向新型连接装配式剪力墙抗震性能试验研究

为综合评价基于钢板网成孔的竖向钢筋搭接连接的装配式混凝土剪力墙抗震性能,制作了足尺试件,进行了拟静力试验并与现浇试件对比.试验结果表明:对于最终破坏形态,钢板网成孔的竖向钢筋搭接连接试件与现浇试件基本相同,初始裂缝出现位置不同.两者滞回曲线均较饱满,骨架曲线走势基本一致,耗能能力接近.各装配试件与现浇试件极限位移角为1/55到1/43,位移延性系数为4到5,满足延性要求.钢板网成孔的竖向钢筋搭接连接试件较现浇试件各阶段荷载承载能力有所降低.装配式混凝土剪力墙结构水平拼缝采用合理构造可以达到与现浇结构相接近的延性、承载能力以及抗震耗能能力.

Test on the Seismic Performance of Precast Shear Wall with Vertical Reinforcement Lapping in Pore-forming on Steel Plate

To comprehensivly evaluate the seismic behavior of pre-cast concrete shear walls with vertical reinforcement lapping in pore-forming on steel plate connected in horizontal joints, fabricated and cast-in-place concrete shear wall with full scale specimens were tested and compared through quasi-static test. The test results showed that the ultimate failure pattern of the vertical connection in pore-forming on steel plate and the cast-in-place specimen was basicly the same, initial cracks appeared in different positions,the hysteresis curve of the specimen was full, the trend of the skeleton curve was basically the same, the capacity of energy dissipation was also similar; the ultimate displacement angle of each specimen was from 1/55 to 1/43, the displacement ductility factor was from 4 to 5, which met the ductility requirements; and the load carrying capacity of vertical reinforcement lapping in pore-forming on steel plate was lower than that of the cast-in-place specimens. Pre-cast concrete shear wall with reasonable horizontal joints can achieve considerable carrying capacity, ductility and seismic energy dissipation capacity with the cast-in-place specimens.