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（1 江蘇省建筑科學(xué)研究院有限公司， 南京 210008； 2 江蘇省蘇科建設(shè)技術(shù)發(fā)展有限公司， 南京 210008； 3 蘇州科技大學(xué)江蘇省結(jié)構(gòu)工程重點(diǎn)實(shí)驗(yàn)室， 蘇州 215011）

［摘要］圍繞泰州市姜堰區(qū)實(shí)驗(yàn)小學(xué)北街校區(qū)雛鷹樓的加固設(shè)計(jì)和抗震性能展開(kāi)研究。首先，根據(jù)檢測(cè)公司的鑒定結(jié)果，采用增大截面加固法和粘貼碳纖維布加固法對(duì)其進(jìn)行加固設(shè)計(jì)，并對(duì)梁、柱截面進(jìn)行了驗(yàn)算。隨后，基于結(jié)構(gòu)分析軟件OpenSees建立了三維有限元模型，并對(duì)結(jié)構(gòu)動(dòng)力特性和多遇地震作用下的地震響應(yīng)進(jìn)行了分析。最后，開(kāi)展了結(jié)構(gòu)在設(shè)防和罕遇地震作用下的動(dòng)力彈塑性時(shí)程分析，對(duì)比分析了遠(yuǎn)、近場(chǎng)地震作用下結(jié)構(gòu)加固前后的抗震性能。研究結(jié)果表明：加固后，結(jié)構(gòu)抗震性能顯著提升，梁、柱截面滿足抗震要求的同時(shí)，結(jié)構(gòu)層間位移角得到有效控制，罕遇地震作用下層間位移角最大可減小78-4%；多遇、設(shè)防和罕遇地震作用下，近場(chǎng)地震工況的結(jié)構(gòu)底部層間位移角分別為遠(yuǎn)場(chǎng)地震工況時(shí)的1-42，2-07和3-66倍。

［關(guān)鍵詞］鋼筋混凝土框架； 碳纖維加固； 近場(chǎng)地震； 抗震性能

中圖分類號(hào)：TU352-1+1， TU375-4文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)21-0090-07

Seismic performance analysis of Chuying Building of Jiangyan Experimental Elementary School without and with reinforcement

Sun Yong1,2， Chen Xin3， Zhu Yanqing3， Yu Weigen1,2， Li Jiaqing1,2， Su Guanxing1,2

(1 Jiangsu Research Institute of Building Science Co.,  Ltd.,  Nanjing 210008, China； 2 Jiangsu Suke Construction Technology Development Co.,  Ltd.,  Nanjing 210008, China；3 Jiangsu Province Key Laboratory of Structure Engineering, Suzhou University of Science and Technology, Suzhou 215011, China)

Abstract:The reinforcement design and seismic performance analysis of Chuying Building of Jiangyan Experimental Elementary School were investigated. Firstly, according to the aseismic elevation results from an inspection company, the reinforcement design was conducted using the methods of enlarging sections and sticking FRP, and both the sections of the columns and beams were verified. Secondly, a three-dimensional model was established by using the structural analysis software OpenSees, and both the dynamic characteristics and seismic responses under frequent earthquake of the structure were analyzed. Lastly, the dynamic elastic-plastic time history analysis of the structure was conducted under both fortification and rare earthquakes, then seismic performance of the structure with and without reinforcement were compared under far-field and near-field earthquakes. The results show that the seismic performance of the structure is improved significantly, as both the sections of the columns and beams can satisfy the seismic demand, also the structure′s drifts are reduced effectively with the maximum reduction of the drift reaches 78-4% when subjected to rare earthquake. And the structure′s bottom story drift under near-fault earthquake is 1-42, 2-07 and 3-66 times larger than that under far-field earthquake when subjected to frequent, fortification and rare earthquake respectively.

Keywords:reinforced concrete frame; carbon fiber reinforced; near-field earthquake; seismic performance

*國(guó)家重點(diǎn)研發(fā)計(jì)劃（2016YFC0701600），國(guó)家自然科學(xué)基金（51408389），江蘇省自然科學(xué)基金（BK20161581, BK20181078），江蘇省“青藍(lán)工程”，江蘇省住房和城鄉(xiāng)建設(shè)廳節(jié)能減排專項(xiàng)（蘇財(cái)建【2017】131號(hào)），蘇州市市級(jí)建設(shè)科研項(xiàng)目（2018-9）。

通訊作者：陳鑫，博士，副教授，Email:civil.chenxin@gmail.com。