（1 江苏省建筑科学研究院有限公司， 南京 210008； 2 江苏省苏科建设技术发展有限公司， 南京 210008； 3 苏州科技大学江苏省结构工程重点实验室， 苏州 215011）

［摘要］围绕泰州市姜堰区实验小学北街校区雏鹰楼的加固设计和抗震性能展开研究。首先，根据检测公司的鉴定结果，采用增大截面加固法和粘贴碳纤维布加固法对其进行加固设计，并对梁、柱截面进行了验算。随后，基于结构分析软件OpenSees建立了三维有限元模型，并对结构动力特性和多遇地震作用下的地震响应进行了分析。最后，开展了结构在设防和罕遇地震作用下的动力弹塑性时程分析，对比分析了远、近场地震作用下结构加固前后的抗震性能。研究结果表明：加固后，结构抗震性能显著提升，梁、柱截面满足抗震要求的同时，结构层间位移角得到有效控制，罕遇地震作用下层间位移角最大可减小78-4%；多遇、设防和罕遇地震作用下，近场地震工况的结构底部层间位移角分别为远场地震工况时的1-42，2-07和3-66倍。

［关键词］钢筋混凝土框架； 碳纤维加固； 近场地震； 抗震性能

中图分类号：TU352-1+1， TU375-4文献标识码：A文章编号：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

*国家重点研发计划（2016YFC0701600），国家自然科学基金（51408389），江苏省自然科学基金（BK20161581, BK20181078），江苏省“青蓝工程”，江苏省住房和城乡建设厅节能减排专项（苏财建【2017】131号），苏州市市级建设科研项目（2018-9）。

通讯作者：陈鑫，博士，副教授，Email:civil.chenxin@gmail.com。