建筑结构学报2011，Vol.32Issue(7)：101-111,11.
防屈曲支撑混凝土框架结构抗震性能试验研究
Experimental research on seismic performance of BRB concrete frames
摘要
Abstract
Three buckling-restrained brace concrete frames ( BRBCF) with different BRB or beam sections, which were normal reinforced concrete beam with monoclinic BRB, flat beam with monoclinic BRB, normal reinforced concrete beam with invert-V BRB, were designed, manufactured and tested by quasi-static test. The seismic performance, including cracks on concrete elements, lateral load-displacement loops, skeleton curves, tangent stiffness and its degradation, and BRB load-deformation curves, were studied. Test results show that the BRB and concrete frame can effectively work together to resist lateral force. The system has plump and stable hysteric load-displacement curves. The BRB can start to dissipate energy by yielding at relatively small story drift ratio, and avoid failure at large lateral drift ratio. It is validated that the equivalent viscous damping can thus be increased and the seismic response be reduced, resulting in an improved structural performance. The designed concrete joints, the embedded parts and the connectors function well and reliably.关键词
混凝土框架/防屈曲支撑/拟静力试验/消能减震Key words
concrete frame/ buckling-restrained brace ( BRB) / quasi-static test/ seismic reduction and energy dissipation分类
建筑与水利引用本文复制引用
顾炉忠,高向宇,徐建伟,胡楚衡,武娜..防屈曲支撑混凝土框架结构抗震性能试验研究[J].建筑结构学报,2011,32(7):101-111,11.基金项目
国家自然科学基金项目(50678013). （50678013）
