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(1 鄭州大學(xué)土木工程學(xué)院， 鄭州 450001；2 河南省建設(shè)工程施工圖審查中心有限公司， 鄭州 450000)

［摘要］結(jié)合實(shí)際工程項(xiàng)目，提出將新型雙階屈服屈曲約束支撐應(yīng)用于傳統(tǒng)混凝土框架結(jié)構(gòu)。設(shè)計(jì)一榀縮尺單層單跨雙階屈服屈曲約束支撐混凝土框架結(jié)構(gòu)試件，采用低周往復(fù)試驗(yàn)，對(duì)雙階屈服屈曲約束支撐在混凝土框架結(jié)構(gòu)中的抗震性能以及二者的協(xié)同工作性能進(jìn)行試驗(yàn)驗(yàn)證。在此基礎(chǔ)上，進(jìn)一步研究雙階屈服屈曲約束支撐在鋼筋混凝土框架結(jié)構(gòu)體系中的抗震性能，對(duì)雙階屈服屈曲約束支撐框架結(jié)構(gòu)體系進(jìn)行彈塑性時(shí)程分析，并與單階屈服屈曲約束支撐框架結(jié)構(gòu)體系對(duì)比。結(jié)果表明，雙階屈服屈曲約束支撐在小震作用下實(shí)現(xiàn)第一階屈服并保持剛度，為結(jié)構(gòu)提供附加阻尼，參與耗能；在中震與大震作用下發(fā)生第二階屈服，持續(xù)耗能。與單階屈服屈曲約束支撐相比，雙階屈服屈曲約束支撐具有更優(yōu)的抗震性能。 

［關(guān)鍵詞］雙階屈服屈曲約束支撐；鋼阻尼器；滯回性能；彈塑性時(shí)程分析；附加有效阻尼比 

中圖分類號(hào)：TU375-4 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)18-0106-06

Research on seismic behavior of concrete frame structure braced with double-level yielding buckling-restrained brace 

ZHANG  Zhe1,  ZHOU  Tongtong1,  DENG  Enfeng1,  BU  Gang2,  LI  Huifeng2 

(1 School of Civil Engineering, Zhengzhou University, Zhengzhou 450001， China；2 Henan Construction Project Construction Map Review Center Co., Ltd., Zhengzhou 450000， China) 

Abstract: Combined with actual engineering projects, it is proposed to apply a new type of double-level yielding buckling-restrained brace to the traditional concrete frame structure. A scaled-down single-layer single-span concrete frame structure specimen braced with double-level yielding buckling-restrained brace was designed. The seismic performance and cooperative working performance of double-level yielding buckling-restrained brace were verified by quasi-static test. Further, the elastic-plastic time history analysis of the double-level yielding buckling-restrained brace concrete frame was carried out to further study the seismic performance of the double-level yielding buckling-restrained braced in the concrete frame structure system. The seismic performance was compared with the single-level yielding buckling-restrained brace concrete frame. The results show that the double-level yielding buckling-restrained brace was able to provide additional damping and dissipate energy under frequent earthquake through first-level yielding, and dissipate energy under moderate and rare earthquake through the second-level yielding. Moreover, the double-level yielding buckling-restrained brace has better seismic performance compared to the single-level yielding buckling-restrained brace.

Keywords:double-level yielding buckling-restrained brace； steel damper； hysteretic behavior； elastic-plastic time-history analysis； additional effective damping ratio

*國家自然科學(xué)基金青年科學(xué)基金項(xiàng)目（51908511），河南省高等學(xué)校重點(diǎn)科研項(xiàng)目（20A560001），中國博士后科學(xué)基金面上項(xiàng)目（2019M662532）。

 作者簡介：張哲，博士，教授，博士生導(dǎo)師，Email:   zhangzhe_77@163.com； 通信作者：鄧恩峰，博士，講師，碩士生導(dǎo)師，Email: dengenfeng@zzu.edu.cn。