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    蘇  原，趙崇豐，吳  晟
    (華中科技大學(xué)土木工程與力學(xué)學(xué)院，華中科技大學(xué)控制結(jié)構(gòu)湖北省重點(diǎn)實(shí)驗(yàn)室，武漢430074)

[摘要] 在分析現(xiàn)有建筑結(jié)構(gòu)抗震加固方法的基礎(chǔ)上，引入結(jié)構(gòu)分災(zāi)的設(shè)計(jì)思想，提出了基于分災(zāi)模式的抗震加固方法。說(shuō)明了該加固設(shè)計(jì)方法的基本原則，分災(zāi)單元的設(shè)計(jì)要點(diǎn)，本加固設(shè)計(jì)方法不僅能夠提高結(jié)構(gòu)的承載力，而且能夠提高提高結(jié)構(gòu)的延性和耗能能力以及消減大震下的結(jié)構(gòu)地震反應(yīng)，為建筑結(jié)構(gòu)加固設(shè)計(jì)提出了新的設(shè)計(jì)思路。本方法特別適用于由丙類提高為乙類的建筑物的抗震加固。
[關(guān)鍵詞] 建筑結(jié)構(gòu)；抗震加固；分災(zāi)模式；分災(zāi)單元

Discussion of design concepts for building structures seismic strengthening based on damage-reduction mode
Su Yuan,  Zhao Chongfeng,  Wu Sheng
(School of Civil Engineering and Mechanics, Hubei Key Laboratory of Control Structure, Huazhong University of Science & Technology, Wuhan 430074, China)

Abstract: On the basis of analyzing the current ways of structure seismic strengthening and in accordance with the design idea of structure damage-reduction, the method of seismic strengthening which based on the damage-reduction mode was presented. The principles of the strengthening design and the main design points of the damage-reduction unit were illustrated. This method can improve the structure bearing capacitys,  the structure ductility and the ability of cosuming energy as well as reduce the earthquake response of the structure when suffering the violent earthquake.A new thoughts of seisnuc strengthening of buildings was presented. This method is specially suitable for the buildings which seismic fortification category are raised from c to b.
Keywords: building structures seismic strengthening; damage-reduction mode; damage-reduction unit