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(1 中國(guó)地震局地球物理研究所，北京 100081； 2 西安理工大學(xué)水利水電學(xué)院，西安 710048；3 北京工業(yè)大學(xué)工程抗震與結(jié)構(gòu)診治北京市重點(diǎn)試驗(yàn)室，北京 100022）
［摘要］結(jié)合我國(guó)現(xiàn)行抗震規(guī)范中的彈性反應(yīng)譜，給出了基于結(jié)構(gòu)Pushover曲線的目標(biāo)位移的確定方法，并據(jù)此對(duì)結(jié)構(gòu)抗震性能進(jìn)行了評(píng)估。經(jīng)對(duì)比分析，列舉了確定等效單自由度體系粘滯阻尼比的實(shí)用公式。此外，以規(guī)范反應(yīng)譜為目標(biāo)譜，合成人工地震波對(duì)結(jié)構(gòu)進(jìn)行彈塑性時(shí)程分析，檢驗(yàn)簡(jiǎn)化計(jì)算結(jié)果。實(shí)例分析表明，所給出的目標(biāo)位移的確定方法有較好的精度，便于工程技術(shù)人員掌握，是進(jìn)行抗震性能設(shè)計(jì)的實(shí)用方法。
［關(guān)鍵詞］目標(biāo)位移； Push-over曲線；等效阻尼比；彈性反應(yīng)譜
A method for determining target displacement based on structural Push-over curve
Yu Ruifang1，3, Zhang Junfa2, Zhou Xiyuan3 (1 Institute of Geophysics, China Earthquake Administration, Beijing 100081,China；2 Xi′an University of Technology, Xi′an 710048,China；3 Beijing University of Technology, Beijing 100022,China)
Abstract:A method of calculating target displacement, which is based on structural Push-over curve and elastic response spectra given in Chinese aseismic code, is deduced and then is used to estimate structural performance. Some formulas for calculating viscous damping ratio of equivalent single-degree-freedom system are analyzed and compared. In addition, the elasticplastic time history analysis is adopted to check the results obtained from simplified method under a man-made seismic wave input. The analysis results show that the simplified method has good precision and is convenience to be mastered and used by engineers, so that it is a practical approach for carrying out seismic performance based design.
Keywords:target displacement； Push-over curve； equivalent damping ratio； elastic response spectra
中國(guó)地震局地球物理研究所基本科研業(yè)務(wù)專項(xiàng)（DQJB06B02）。
作者簡(jiǎn)介：俞瑞芳，博士，副研究員，Email:yuruifang@emails.bjut.edu.cn。
參考文獻(xiàn)
［1］楊溥,李英民,王亞勇，等. 結(jié)構(gòu)靜力彈塑性分析（push-over）方法的改進(jìn)［Ｊ］. 建筑結(jié)構(gòu)學(xué)報(bào),2000,21(2):44-50
［2］GB50011—2001建筑抗震設(shè)計(jì)規(guī)范［Ｓ］北京：中國(guó)建筑工業(yè)出版社,2001.
［3］葉獻(xiàn)國(guó),周錫元.建筑結(jié)構(gòu)地震反應(yīng)簡(jiǎn)化分析方法的進(jìn)一步改進(jìn)［Ｊ］. 合肥工業(yè)大學(xué)學(xué)報(bào)（自然科學(xué)版）,2000,23(2):149-153
［4］周錫元.抗震性能設(shè)計(jì)與三水準(zhǔn)設(shè)防［Ｊ］.土木水利，30（5），2003：21-32，中國(guó)臺(tái)灣土木水利工程學(xué)會(huì)轉(zhuǎn)載.
［5］胡聿賢.地震工程學(xué)［Ｍ］.北京：地震出版社,1988.
［6］ATC—40，Seismic evaluation and retrofit of concrete buildings. Applied Technology Council. Red wood city, California, 1996.