再生骨料掺量对中高剪力墙抗震性能影响试验研究

Experimental study on seismic behavior of mid-rise recycled concrete shear walls with different percentage of aggregate replacement

为了研究不同再生骨料掺量、配筋形式的剪力墙抗震性能,进行5个中高剪力墙的低周反复荷载试验研究。在试验的基础上,分析各剪力墙的滞回特性、承载力、延性、刚度及其退化过程、耗能及破坏特征。研究表明:再生骨料掺量的增加,使再生混凝土中高剪力墙的抗震性能有所降低;钢筋混凝土格构暗支撑能明显改善再生混凝土中高剪力墙的抗震性能。经过合理设计,再生混凝土剪力墙可以满足建筑结构抗震要求。

In order to investigate the seismic performance of mid-rise recycled concrete shear wall with different percentage of aggregate replacement and different style of reinforcement,5 mid-rise shear walls were tested under the horizontal cyclic loading.Based on the experiment,the hysteretic behavior,load-carrying capacity,ductility,stiffness and its deterioration process,energy dissipation and failure feature of the specimens were analyzed systematically.The results show that the more the percentage of the aggregate replacement,the poorer the seismic performance of recycled concrete shear walls;and the seismic performance of recycled aggregate concrete shear wall could be greatly improved by setting concealed bracings in the wall.Through reasonable design,the recycled concrete shear wall is able to satisfy the anti-seismic requirements.