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   李  密^1,2，  朱春明^1,2，  馮  波^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] 根據(jù)某框架結(jié)構(gòu)加層改造抗震加固實(shí)例，指出了防屈曲支撐在某框架結(jié)構(gòu)加層改造抗震加固設(shè)計中優(yōu)勢及其布置方法，分析了防屈曲支撐在小震下的剛度貢獻(xiàn)和中震及大震情況下的耗能情況，分析結(jié)果表明防屈曲支撐在框架結(jié)構(gòu)加層改造抗震加固中具有良好抗震性能。
[關(guān)鍵詞] 防屈曲支撐；附加阻尼比；加層改造；抗震加固；層間位移
中圖分類號：TU391.9    文獻(xiàn)標(biāo)識碼：A  文章編號：1002-848X(2012) Sl-0478-04

Application of buckling-restrained-braces in the seismic strengthening of storey-adding reconstruction of frame structure
Li Mi^1,2,  Zhu Chunming^1,2,  Feng Bo^1,2
(1 Shanghai Research Institute of Building Science( Group)  Co., Ltd., Shanghai 200032, China; 2 Shanghai Key Laboratory of New Technology Research on Engineering Structure, Shanghai 200032, China)

Abstract: The advantage and layout method about buckling-restrained-braces in the seismic strengthening of storey-adding reconstruction of frame structure was pointed out according to the seismic strengthening of storey-adding reconstruction of frame structure in practical engineering. Besides, the stiffness of the buckling-restrained-braces to the structure was analyzed in nunor earthquakes, and energy dissipation was analyzed in medium earthquakes and great earthquakes, which show that the excellent seismic behavior of buckling-restrained-braces in the seismic strengthening of storey-adding reconstruction of frame structure.
Keywords: buckling-restrained-brace; additional damping ratio; storey-adding reconstruction; seismic strengthening; story drift angle