Shear walls, especially the shear walls within core tube, as important lateral force resisting elements of (super) high-rise buildings are always damaged from brittle shear failure due to small shear-span ratio, especially earthquake induced serious damage around the bottom and post-seismic rehabilitation is extremely difficult and expensive. Therefore, a new slit composite shear wall (CSW) with dampers is proposed in this paper to control the damages and improve seismic performances of shear walls. The comparative researches between conventional low-rise shear wall and new slit CSW with separating dampers are carried out through bearing capacity, deformation capacity, energy-dissipating capacity and failure mode. The results show, compared with the low-rise shear wall, the peak load of CSW with slit and damper increases by 2. 2. 2％; the ultimate deformation increases by 223％; the ductility factor increases by 116％; the energy dissipation coefficient increases by 91％. The new slit CSW with dampers is destroyed by flexure failure, which is different from the brittle shear failure of low-rise shear wall.%剪力墙尤其是核心筒剪力墙作为(超)髙层建筑的主要抗侧力和承重构件,由于高宽比较小,破坏形式往往为脆性 的剪切破坏,地震作用下剪力墙底部损伤严重,震后修复极其困难,修复费用昂贵.因此,为了对高宽比较小的剪力墙进行改 善,控制剪力墙的损伤,本文提出一种新型的开缝耗能组合墙,并从承载力、变形能力、耗能能力与破坏形态等方面对比组合 墙与传统低矮剪力墙的抗震性能差异.分析结果表明:两者在承载力相差不大的情况下,开缝耗能组合墙的极限位移为低矮 剪力墙的3. 23倍,延性系数为低矮剪力墙的2. 16倍,耗能系数为低矮剪力墙的1. 91倍,在破坏形式上也有了明显的转变,由 低矮剪力墙的剪切破坏转变为了开缝耗能组合墙的弯曲破坏.
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