屈曲約束支撐加固RC框架結(jié)構(gòu)振動臺試驗(yàn)設(shè)計(jì)與研究*
吳克川1,2，陶忠1,2，韋光蘭1，張丹1,2
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（1 昆明理工大學(xué)土木工程系， 昆明 650500； 2 昆明理工大學(xué)工程抗震研究所， 昆明 650500）［摘要］為驗(yàn)證玉溪一中星華樓采用屈曲約束支撐加固后在地震作用下的抗震性能，并研究耗能減震加固結(jié)構(gòu)體系的受力機(jī)理及破壞模式，對未加固結(jié)構(gòu)及屈曲約束支撐加固結(jié)構(gòu)進(jìn)行了1/5大比例縮尺模型振動臺對比試驗(yàn)。詳細(xì)介紹了振動臺試驗(yàn)?zāi)Ｐ偷牟牧线x取、材料性能試驗(yàn)、動力相似關(guān)系確定及試驗(yàn)方案設(shè)計(jì)。試驗(yàn)結(jié)果表明：未采用屈曲約束支撐加固的結(jié)構(gòu)不能滿足規(guī)范的抗震要求，采用屈曲約束支撐加固后的結(jié)構(gòu)抗震性能有所提高，同時(shí)結(jié)構(gòu)抗震安全儲備有所增加，能夠滿足規(guī)范的抗震要求。［關(guān)鍵詞］屈曲約束支撐; 振動臺試驗(yàn); 相似關(guān)系; 滯回性能試驗(yàn)中圖分類號：TU352.1,P315.97 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2015)09-0020-06Shaking table test design and study of RC frame structure strengthened by buckling restrained bracesWu Kechuan1,2, Tao Zhong1,2, Wei Guanglan1, Zhang Dan1,2(1 Civil Engineering Institute, Kunming University of Science and Technology, Kunming 650500, China; 2 Earthquake Engineering Institute, Kunming University of Science and Technology, Kunming 650500, China)Abstract:To verify the seismic performance of buckling restrained braces(BRBs) in reducing the seismic response of Yuxi No.1 Middle School and study the mechanism and failure modes of strengthened energy dissipation structural system, the shaking table tests were carried out on two 1/5 scale model of the strengthened structure and prototype, which are equipped and unequipped with BRBs respectively. The specific procedures of shaking table test were described, including the material selection, material property testing, dynamic similitude-scaling relationship determination and test scheme design. The results show that the structure without BRBs can’t meet the seismic requirements of specifications. The structural seismic performance of the structure strengthened by BRBs is improved with increased structural seismic safety reserves, and the strengthened structure can meet the seismic requirements.Keywords: buckling restrained brace; shaking table test; similitude-scaling relationship; hysteretic behavior test*國家科技支撐計(jì)劃項(xiàng)目(2013BAK13B00)作者簡介：吳克川，博士研究生，Email：452969980@qq.com。參考文獻(xiàn)［1］吳克川，陶忠，胡大柱，等.屈曲約束支撐在玉溪一中教學(xué)樓抗震加固中的應(yīng)用［J］.建筑結(jié)構(gòu)，2014，44(18):94-100．［2］朱伯龍.結(jié)構(gòu)抗震試驗(yàn)［M］.北京:地震出版社,1989.［3］姚振剛，劉祖華．建筑結(jié)構(gòu)抗震試驗(yàn)［M］.上海:同濟(jì)大學(xué)出版社,1996.［4］李岳，姜忻良.土與結(jié)構(gòu)相互作用振動臺試驗(yàn)?zāi)Ｐ驮O(shè)計(jì)方法分析［J］.工程力學(xué)，2010，27(1):73-76．［5］郭彥林，劉建彬，蔡益燕，等.結(jié)構(gòu)的耗能減震與防屈曲支撐［J］.建筑結(jié)構(gòu)，2005，35(8):18-23．［6］FEMA450 Nehrp recommended provisions for seismic regulations for new buildings and other structures［S］. Washington D. C.: Federal Emergency Management Agency，2003.［7］程光煜，葉列平，崔鴻超.防屈曲耗能鋼支撐設(shè)計(jì)方法的研究［J］.建筑結(jié)構(gòu)學(xué)報(bào)，2008，29(1):40-48．［8］李國強(qiáng)，胡寶琳，孫飛飛，等.國產(chǎn)TJI型屈曲約束支撐的研制與試驗(yàn)［J］.同濟(jì)大學(xué)學(xué)報(bào)：自然科學(xué)版，2011，39(5):631-636．［9］JGJ 297—2013建筑消能減震技術(shù)規(guī)程［S］.北京:中國建筑工業(yè)出版社，2013.［10］潘鵬，葉列平，錢稼茹，等.建筑結(jié)構(gòu)消能減震設(shè)計(jì)與案例［M］.北京:清華大學(xué)出版,2014.
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