带分布式金属阻尼器开缝组合墙抗震性能研究  

Study on Seismic Performances of Slit Composite Shear Wall with Distributed Metallic Dampers

作　　者：黄祖桓 吴轶[1] 杨春[2,3] 陈麟[1] 张春梅[1] Huang Zu-huan;Wu Yi;Yang Chun;Chen Lin;Zhang Chun-mei(School of Civil Engineering of Guangzhou University, Guangzhou 510006, China;School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China;State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China)

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]华南理工大学土木与交通学院,广东广州510640 [3]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640

出　　处：《工程抗震与加固改造》2018年第2期28-36,共9页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金青年科学基金(51108104);广东省自然科学基金(S2012010010074);广州市属高校"羊城学者"(12A001D);广东省科技计划项目(2013B020200016);国家留学基金委资助

摘　　要：剪力墙尤其是核心筒剪力墙作为(超)高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。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%; 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.

关 键 词：开缝耗能组合墙 软钢耗能器 破坏形式 损伤与耗能控制 

分 类 号：TU352.1[建筑科学—结构工程]