（1 河北工业大学土木与交通学院， 天津 300130； 2 河北省土木工程技术研究中心， 天津  300401；3 河北工业大学建筑与艺术设计学院， 天津  300130）

［摘要］为研究屈曲约束支撑钢筋混凝土框架结构的抗震性能，对安装和不安装屈曲约束支撑的两榀三层两跨的钢筋混凝土框架进行拟静力试验研究，对比有控框架与无控框架的试验结果。结果表明，安装屈曲约束支撑后，钢筋混凝土框架结构的屈服荷载提高了约1倍，极限承载力提高了约0-75倍，初始刚度和耗能能力提高了近2-5倍，框架滞回曲线更饱满，有更好的抗侧移能力，有效控制了节点区域的裂缝发展。由此可见，钢筋混凝土框架结构的承载能力、变形能力、耗能能力、刚度及破坏形态等各项抗震性能均得到显著提升。为使屈曲约束支撑更好地发挥其性能，应保证其与框架连接部分的可靠性，避免平面外失稳。

［关键词］钢筋混凝土框架； 屈曲约束支撑； 抗震性能； 试验研究

中图分类号：TU375， TU352文献标识码：A文章编号：1002-848X(2017)08-0029-04

Experimental study on seismic performance of RC frame structure with buckling restrained brace

Qiao Jinli1,2， Hou Shuang1， Ren Zemin3， Wang Xiaowei1， Ma Yanan1， Ding Dong1， Kong Lingchuan1

(1 School of Civil and Transportation, Hebei University of Technology, Tianjin 300130, China； 

2 Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, China; 

3 School of Architecture and Art, Hebei University of Technology, Tianjin 300130, China)

Abstract:To study the seismic performance of RC frame structure with buckling restrained brace, quasi-static experimental study was conducted on two pieces of three-layer and two-span RC frame with and without buckling restrained brace respectively, and the experimental results were compared. Results show that after the installation of buckling restrained brace, yielding load of the RC frame structure is increased by about 1 times,  ultimate bearing capacity is increased by about 0-75 times, and initial stiffness and energy dissipation capacity are increased by nearly 2-5 times. The frame hysteretic curve is fuller to indicate better lateral resistance ability and crack development in joint region is effectively controlled. It shows that the all seismic performance indicators of the RC  frame structure including bearing capacity, deformation capacity, energy dissipation capacity, stiffness and failure mode are significantly improved. In order to improve the performance of the buckling restrained brace, it is necessary to ensure the reliability of its connection part with the frame to avoid the out-of-plane instability.

Keywords:RC frame; buckling restrained brace; seismic performance; experimental study

*河北省高等学校科学技术研究项目（QN2014119）。

作者简介：乔金丽，博士，副教授，硕士生导师，Email:qiaojinli@126.com。