屈曲约束支撑加固RC框架结构振动台试验设计与研究*
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（1 昆明理工大学土木工程系， 昆明 650500； 2 昆明理工大学工程抗震研究所， 昆明 650500）［摘要］为验证玉溪一中星华楼采用屈曲约束支撑加固后在地震作用下的抗震性能，并研究耗能减震加固结构体系的受力机理及破坏模式，对未加固结构及屈曲约束支撑加固结构进行了1/5大比例缩尺模型振动台对比试验。详细介绍了振动台试验模型的材料选取、材料性能试验、动力相似关系确定及试验方案设计。试验结果表明：未采用屈曲约束支撑加固的结构不能满足规范的抗震要求，采用屈曲约束支撑加固后的结构抗震性能有所提高，同时结构抗震安全储备有所增加，能够满足规范的抗震要求。［关键词］屈曲约束支撑; 振动台试验; 相似关系; 滞回性能试验中图分类号：TU352.1,P315.97 文献标识码：A 文章编号：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*国家科技支撑计划项目(2013BAK13B00)作者简介：吴克川，博士研究生，Email：452969980@qq.com。参考文献［1］吴克川，陶忠，胡大柱，等.屈曲约束支撑在玉溪一中教学楼抗震加固中的应用［J］.建筑结构，2014，44(18):94-100．［2］朱伯龙.结构抗震试验［M］.北京:地震出版社,1989.［3］姚振刚，刘祖华．建筑结构抗震试验［M］.上海:同济大学出版社,1996.［4］李岳，姜忻良.土与结构相互作用振动台试验模型设计方法分析［J］.工程力学，2010，27(1):73-76．［5］郭彦林，刘建彬，蔡益燕，等.结构的耗能减震与防屈曲支撑［J］.建筑结构，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，叶列平，崔鸿超.防屈曲耗能钢支撑设计方法的研究［J］.建筑结构学报，2008，29(1):40-48．［8］李国强，胡宝琳，孙飞飞，等.国产TJI型屈曲约束支撑的研制与试验［J］.同济大学学报：自然科学版，2011，39(5):631-636．［9］JGJ 297—2013建筑消能减震技术规程［S］.北京:中国建筑工业出版社，2013.［10］潘鹏，叶列平，钱稼茹，等.建筑结构消能减震设计与案例［M］.北京:清华大学出版,2014.
