摘要
对外部附加带框钢支撑加固的框架结构进行低周反复荷载试验,研究其开裂及破坏状态、滞回曲线、骨架曲线、刚度退化、抗震耗能系数曲线等并与纯框架结构试验结果对比,得到结论如下:外部附加带框钢支撑强连接加固法提高混凝土框架结构抗震承载能力3. 62倍,初始刚度提高系数为2. 6,同时能够有效限制结构的层间位移,钢支撑作为第一道抗震防线,增加了结构的抗震冗余度,是一种非常好的抗震加固方法。
The low-cyclic reversed loading test of frame structure strengthened by steel frame-braces is carried out.The cracking and failure patterns,hysteretic curves,skeleton curves,stiffness degradation curve,energy dissipation coefficient are analyzed,and compared with the results of frame structure test.The results show that:comparing with pure frame structure,aseismic bearing capacity of frame wih attached steel braces can be increased by 3.62 times,the initial stiffness improvement coefficient is 2.6,and the interlayer displacement can be restricted effectively.As the first anti-seismic line,steel braces increase the seismic redundancy of the structure.
作者
尹保江
吉飞宇
程绍革
陈磊
杜媛媛
Yin Bao-jiang;Ji Fei-yu;Cheng Shao-ge;Chen Lei;Du Yuan-yuan(China Academy of Building Research Co.Ltd.,Beijing 100013,China;Chongqing University,Chongqing 400045,China)
出处
《工程抗震与加固改造》
北大核心
2019年第3期114-119,共6页
Earthquake Resistant Engineering and Retrofitting
基金
国家重点研发计划(2016YFC0700706-03)
中国建筑科学研究院应用基金项目(20140122330730032)
关键词
外部附加带框钢支撑
低周反复荷载试验
抗震性能
attached frame steel bracces
low-cyclic loading test
seismic performance
finite element method
