摇摆减震框架结构抗震性能试验研究  

EXPERIMENTAL RESEARCH ON SEISMIC BEHAVIOR OF ROCKING DAMPING FRAME STRUCTURE

作　　者：张国伟 赵紫薇 吴继丰 陈鹏 ZHANG Guowei;ZHAO Ziwei;WU Jifeng;CHEN Peng(Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学北京未来城市设计高精尖创新中心

出　　处：《工业建筑》2018年第11期73-80,共8页Industrial Construction

基　　金：国家自然科学基金项目(51308026);青年科研创新专项(X18099)

摘　　要：摇摆防屈曲支撑-框架新型结构体系是通过将防屈曲支撑框架柱端与基础断开并在柱脚设置耗能阻尼器,以放松支撑框架柱端与基础之间的受拉约束,在强烈地震中允许支撑框架柱端抬起,产生结构摇摆。通过对一榀固接防屈曲支撑-钢筋混凝土框架与两榀摇摆防屈曲支撑-钢筋混凝土框架进行拟静力试验对比研究,得到:摇摆防屈曲支撑结构滞回曲线饱满,耗能能力良好;层间位移角达到1/150时,摇摆柱脚抬起,基底剪力减小,柱脚裂缝数量减少,变形能力增强;摇摆防屈曲支撑结构具有防屈曲支撑、耗能阻尼器、框架梁、柱等多道抗震防线,整体抗震性能好。Rocking Buckling Restrained Brace Reinforced Concrete Frame (RBRBF)is a new structural system with fuse at the column base that can rock during large earthquake to release the tension constraint between frame column and foundation.Comparative quasi-static tests were conducted on two RBRBF models and a fixed Buckling-Restrained Braced Reinforced Concrete Frame'model.The test results demonstrated that the rocking structure had full hysteresis curve and stable energy dissipation capacity.At the story drift of 1/150,the rocking column base of the rocking structure was uplifted and had lower base shear,the number of cracks and large deformation capability compared to those of base-fixed structure were reduced.The rocking structure has many seismic fortification lines,including BRB, fuse in the column base,frame beams and columns.

关 键 词：防屈曲支撑 摇摆结构 拟静力试验 消能减震 

分 类 号：TU352.11[建筑科学—结构工程]