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    曹炳政^1,2，  朱春明^1,2，  鄭  昊^1,2，  李向民^1,2
    （1 上海市建筑科學(xué)研究院（集團(tuán)）有限公司，上海 200032；2 上海市工程結(jié)構(gòu)新技術(shù)重點(diǎn)實(shí)驗(yàn)室，上海 200032）

[摘要] 總結(jié)了防屈曲約束支撐結(jié)構(gòu)設(shè)計(jì)方法，引入位移性能指標(biāo)，提出支撐在既有建筑抗震加固中的設(shè)計(jì)流程。結(jié)合一幢6層既有綜合樓進(jìn)行了實(shí)例分析，并通過(guò)彈塑性時(shí)程分析予以數(shù)值驗(yàn)證。結(jié)果表明，基于位移性能設(shè)計(jì)方法能夠快速進(jìn)行支撐用量估計(jì)，在中震和大震下減震效果與非線性時(shí)程分析結(jié)果基本一致。
[關(guān)鍵詞] 防屈曲支撐；消能減震；抗震加固；非線性時(shí)程分析
中圖分類號(hào)：TU391.9    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：1002-848X(2012) Sl-0439-05

Research on the application of seismic strengtherung technology with buckling-restrained braces based on displacement in the existing building
Cao Bingzheng^1,2,  Zhu Chunming^1,2,  Zheng Hao^1,2,  Li Xiangmin^1,2
(1 Shanghai Research Institute of Building Sciences( Group)  Co.,  Ltd., Shanghai 200032, China; 2 Shanghai Key Laboratory of New Technology Research on Engineering Structure, Shanghai 200032, China)

Abstract: A seismic strengthening method with buckling-restrained braces was reviewed. Index based on displacement performance was introduced. The design procedure with BRB was suggested. The method was applied to strengthen a six-story existing building. The results of nonlinear time history analysis were compared to results of the method based on displacement performance. The results prove that design of BRB is feasible and the energy dissipation under moderate earthquake and severe earthquake is similar with that of nonlinear time history analysis.
Keywords: buckling-restrained brace; energy dissipation; seismic strengthening; nonlinear time lustory analysis