足尺错十字截面组合热轧角钢防屈曲支撑试验研究  

Static test studies on full-scale buckling-restrained brace specimens with quasi-cross section of steel angles

作　　者：黄海涛[1] 尹学军 高向宇[1] 涂明[1] 高星亮 武娜[1] 任洁[1] 

机构地区：[1]北京工业大学,北京100124 [2]青岛科尔泰环境控制技术有限公司,山东青岛266101

出　　处：《土木工程学报》2010年第S2期164-169,共6页China Civil Engineering Journal

基　　金：国家自然科学基金(50678013)

摘　　要：采用组合热轧角钢设计、制作并测试8个(共4种类型,每个类型2个构件)足尺防屈曲支撑试件,其中热轧角钢试件采用错十字截面、工作段切削成型。采用卧式自平衡加载系统对其进行低周反复加载试验,研究轴向荷载-轴向变形滞回曲线、压拉非对称性、累计塑性变形、刚度退化等方面的抗震及消能减震性能。试验研究证明,这种组合热轧角钢防屈曲支撑构造合理、工作可靠、耗能能力强、抗震性能稳定且规律性好,能够满足建筑结构消能减震设计的需求。Eight full-scale BRB specimens(4 types,with 2 specimens for each)were designed,manufactured and tested.All of them have quasi-cross section and were milled with in the working section.Cyclic static tests were conducted in a self-balanced testing system.The seismic properties,such as force-deformation hysteretic loops,asymmetric properties of compression to tension load-bearing ratio,accumulative plastic deformation,effective stiffness degradation,etc,are studied.It is validated that the kind of BRB has a reliable performance with high energy dissipation property,a reasonable constitution,and good seismic stability,and can meet the design requirement of seismic-reduction for building structures.

关 键 词：防屈曲支撑 无黏结支撑 消能减震 热轧角钢 

分 类 号：TU392.1[建筑科学—结构工程]