摘要
结合2榀1/2比例的3层单跨钢筋混凝土框架低周反复加载拟静力试验研究,对采用防屈曲偏心支撑加固的钢筋混凝土框架结构抗震性能开展研究。通过与未加固试件的对比,对采用防屈曲偏心支撑加固的钢筋混凝土框架结构的破坏形态、承载能力、变形能力、延性和耗能能力等抗震性能指标进行了深入分析。研究结果表明:经合理设计,防屈曲偏心支撑加固框架可有效实现预期的塑性铰机制,达到了防屈曲支撑先于框架结构屈服的设计目标,与未加固对比试件相比,采用防屈曲偏心支撑加固混凝土框架抗震性能显著提高,防屈曲偏心支撑加固混凝土框架具有良好承载能力、弹塑性变形能力和耗能能力。
The seismic performance of concrete-reinforced frame structure retrofitted with buckling-restrained braces was performed in this paper by integrating with experimental study of two single-bay 3-story scaling 1 /2 concretereinforced frames, using low reversed cyclic loading pseudo-static method. Compared with bare specimen,comprehensive study of the failure mode,load carrying capacity,deformability,ductility and energy dissipation ability of concrete-reinforced frame structure retrofitted with eccentric buckling-restrained braces were performed. The results indicated that,with reasonable design,buckling-retrained brace frame could effectively achieve the excepted plastic hinge mechanism and the design target of buckling-restrained braces yielding prior to the frame structure. The seismic performances of concrete-reinforced frame structure retrofitted with eccentric buckling-restrained braces were improved significantly with good carrying capacity,elasto-plastic deformability and energy dissipation ability compared with the unreinforced contrast specimen.
出处
《工业建筑》
CSCD
北大核心
2016年第4期12-17,共6页
Industrial Construction
基金
陕西省教育厅科技计划项目(14JF014)
柳州欧维姆工程机械有限公司科技项目
陕西省重点科技创新团队计划(2014kct-31)
关键词
防屈曲支撑
偏心支撑
钢筋混凝土框架
抗震加固
抗震性能
试验研究
buckling-restrained braces（BRB）
eccentric braces
concrete-reinforced frames
seismic retrofitting
seismic performance
experimental study
