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（1 中國(guó)建筑科學(xué)研究院，北京100013； 2 北京工業(yè)大學(xué)建工學(xué)院，100022）
［提要］基于性能/位移的混凝土小型空心砌塊結(jié)構(gòu)抗震設(shè)計(jì)需要確定不同性能水平下的目標(biāo)位移。改進(jìn)了混凝土小砌塊結(jié)構(gòu)的非線性計(jì)算方法，用等效框架模擬混凝土小砌塊結(jié)構(gòu)，適用于對(duì)混凝土小砌塊結(jié)構(gòu)的抗震性能進(jìn)行評(píng)估。根據(jù)Chopra對(duì)能力譜方法所做的改進(jìn)，給出了混凝土小砌塊結(jié)構(gòu)目標(biāo)位移的確定方法。對(duì)某6層混凝土小砌塊結(jié)構(gòu)的分析結(jié)果表明，改進(jìn)的能力譜方法可以得到和動(dòng)力非線性分析方法比較接近的分析結(jié)果，為確定混凝土小砌塊結(jié)構(gòu)在不同性能水準(zhǔn)下的目標(biāo)位移提供了一種簡(jiǎn)便實(shí)用的分析方法。
［關(guān)鍵詞］混凝土小型空心砌塊結(jié)構(gòu)；基于性能；目標(biāo)位移
Performancebased Approach for Determining Target Displacement of Concrete Smallsized Hollow Block Masonry/Chang Zhaozhong1，Zhou Xiyuan1,2，Wang Youwei1，Cui Jianyou1(1 China Academy of Building Research, Beijing 100013,China; 2 College of Civil Engineering, Beijing University of Technology, Beijing 100022,China)
Abstract:The accurate determination of target displacement is demanded for performance/displacement based seismic design of concrete smallsized hollow block masonry at different performance levels. A method for nonlinear analysis of  concrete smallsized hollow block masonry is developed.This method is based on an  equivalent frame simulation of concrete smallsized hollow block masonry and suitable for seismic assessment of concrete smallsized hollow block masonry. Based on the improved capacity spectrum method by Chopra,a method for determining target displacement of concrete smallsized hollow block masonry is presented. From the analytical results of a 6 storey concrete smallsized hollow block masonry building, the  method gives a good agreement with the results from dynamic nonlinear procedure, so it provides a simplified practical method for the determination of target displacement of concrete smallsized hollow block masonry at different performance levels, and the method is applicable to seismic design code.
Keywords:concrete smallsized hollow block masonry;  performancebased;  target displacement
*城市與工程安全減災(zāi)省部共建教育部重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目；北京市重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目。