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(鄭州大學(xué)土木工程學(xué)院，鄭州 450002)

［摘要］以某兩層鋼筋混凝土工業(yè)建筑框架結(jié)構(gòu)為原型，按1∶3的縮尺模型設(shè)計(jì)了鋼筋混凝土框架模型(KJ-1)，并對(duì)其進(jìn)行模擬地震作用的水平低周反復(fù)荷載作用下的試驗(yàn)；然后對(duì)該嚴(yán)重?fù)p傷的框架進(jìn)行碳纖維布加固，對(duì)加固后的試件(KJ-1A)再進(jìn)行同樣的試驗(yàn)。對(duì)加固前后框架結(jié)構(gòu)的受力性能、裂縫發(fā)展、破壞形態(tài)、滯回曲線、骨架曲線、位移延性等進(jìn)行對(duì)比分析，研究用碳纖維布加固已嚴(yán)重?fù)p傷的混凝土框架結(jié)構(gòu)的抗震性能。試驗(yàn)結(jié)果表明，震后嚴(yán)重?fù)p傷的混凝土框架結(jié)構(gòu)經(jīng)碳纖維布加固，其極限承載能力、耗能能力及延性等抗震性能有明顯提高，為采用碳纖維布加固補(bǔ)強(qiáng)大震后損傷嚴(yán)重的混凝土結(jié)構(gòu)提供了理論依據(jù)。

［關(guān)鍵詞］損傷混凝土框架結(jié)構(gòu)；抗震性能研究；水平低周反復(fù)荷載試驗(yàn)；碳纖維布加固Experimental study on seismic performance of serious damaged RC frame strengthened by CFRP sheets

Wang Xinling, Zhao Gengqi, Lü Lin, Zhu Juntao, Yao Zhangtang(College of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China)

Abstract:Based on a two-layer industry building, a RC frame test model (KJ-1) was designed with the scale 1∶3. The test under low-cycle and repeated load is carried to the frame model. And then the serious damaged RC frame is strengthened by CFRP sheets (KJ-1A) and the same test is done to the KJ-1A. Based on experiments, the force performance, the development of cracks, failure modes, hysteretic curves, the skeleton curves and displacement ductility are analyzed. The seismic performances of the serions damaged RC frame strengthened by CFRP sheets are studied. The results show that the seismic performances of the serions damaged RC frame strengthened by the CFRP are improved significantly. It gives a theory basis that serious damaged RC structures are strengthened by CFRP sheets after rare earthquake.

Keywords:damaged RC frames structure; seismic performance study; low-cycle and repeated load; CFRP sheets strengthening

作者簡(jiǎn)介：王新玲，博士，教授，Email:xinlingwang@zzu.edu.cn。

參考文獻(xiàn)

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