Abstract：To investigate the seismic performance of earthquake-damaged non-ductile reinforced concrete (RC) frames retrofitted with carbon fiber reinforced polymer (CFRP)，two pseudo-static tests were conducted on a 1/2 scale two-span and two-story specimen before and after its CFRP reinforcement. After the RC frame was loaded to its peak bearing capacity，specimens with seismic damaged parts strengthened with external CFRP textile were studied experimentally to obtain their failure modes and hysteretic curves. The seismic performance indexes of the CFRP-retrofitted frame，such as stiffness，strength，ductility and energy consumption，were analyzed and compared with the initial intact frame. The results show that the external CFRP reinforcement has no significant influence on the lateral strength and initial stiffness of the earthquake-damaged non-ductile RC frame，but the energy dissipation capacity of the retrofitted RC frame is obviously improved. The average displacement ductility factor of retrofitted RC frame is 2.81. When the maximum story drift ratio reaches 1/50，the retrofitted RC frame still has a large safety margin. The retrofitted earthquake-damage non-ductile RC frames can be used in seismic areas.
吕大刚，于晓辉，李宁. FRP加固非延性钢筋混凝土框架结构的地震倒塌易损性分析[J]. 建筑结构学报，2015，36（增刊2）：112-118.LÜ Dagang，YU Xiaohui，LI Ning. Seismic collapse fragility analysis for non-ductile RC framestructures retrofitted with FRP[J]. Journal of Building Structures，2015，36（S2）： 112-118.
[3]
CHEN W H, SHOU W R, QIAO Z H, et al. Seismic performance of non-ductile RC frames strengthened with CFRP[J]. Composite Structures, 2019, 221: 1-18
[4]
清华大学土木工程结构专家组,西南交通大学土木工程结构专家组,北京交通大学土木工程结构专家组. 汶川地震建筑震害分析[J]. 建筑结构学报,2008(4): 1-9Civil and Structural Groups of Tsinghua University, Xinan Jiaotong University and Beijing Jiaotong University. Analysis on seismic damage of buildings in the Wenchuan earthquake[J]. Journal of Building Structures, 2008(4): 1-9
[5]
郑建军，廖永石，杜雷，等. 青海玉树地震民用建筑震害调查和分析[J]. 建筑结构，2013，43（增刊1）： 1051-1054.ZHEN Jianjun，LIAO Yongshi，DU Lei，et al. Investigation and analysis of building damage in Yushu city caused by earthquake[J]. Building Structure，2013，43（S1）： 1051-1054.
[6]
蔡晓光，孙有为，郭晓云. 芦山地震建筑震害统计分析[J]. 自然灾害学报，2015，24（6）： 112-119.CAI Xiaoguang，SUN Youwei，GUO Xiaoyun[J]. Statistical analysis of building damage in Ms7.0 Lushan earthquake. 2015，24（6）： 112-119.
BALSAMO A, COLOMBOB A, MANFREDIC G, et al. Seismic behavior of a fulls-cale RC frame repaired using CFRP laminates[J]. Engineering Structures, 2005, 27: 769-780
[9]
熊耀清,姚谦峰. CFRP加固RC框架结构振动台试验及损伤机理分析[J]. 北京交通大学学报,2006,30(1): 25-29XIONG Yaoqing, YAO Qianfeng. Shaking table test and damage mechanism analysis for RC frame strengthened with CFRP[J]. Journal of Beijing Jiaotong University, 2006, 30(1): 25-29
[10]
王新玲,赵更歧,吕林,等. 碳纤维布加固震后严重损伤混凝土框架的抗震试验研究[J]. 建筑结构,2010,40(1): 50-53WANG Xinling, ZHAO Gengqi, LÜ Lin, et al. Experimental study on seismic performance of serious damaged RC frame strengthened by CFRP sheets[J]. Building Structure, 2010, 40(1): 50-53
张沛洲,欧进萍. 低延性钢筋混凝土框架结构抗震性能分析与评估[J]. 建筑结构学报,2013,34(12): 11-18ZHANG Peizhou, OU Jinping. Seismic performance analysis and evaluation for low-ductile RC frame structures[J]. Journal of Building Structures, 2013, 34(12): 11-18
[13]
张玉芬,王育平,赵均海. 复式钢管混凝土外钢管不连通环梁节点抗震性能试验研究[J]. 土木工程学报,2012,45(6): 90-100ZHANG Yufen, WANG Yuping, ZHAO Junhai. Experimental study on the seismic behavior of ring beam joint with discontinuous outer tube outside composite CFST column[J]. China Civil Engineering Journal, 2012, 45(6): 90-100
[14]
ZHANG J, JIA J. Experimental study on seismic behavior of composite frame consisting of SRC beams and SRUHSC columns subjected to cyclic loading[J]. Construction & Building Materials, 2016, 125: 1055-1065
[15]
王铁成,张学辉,赵海龙. 纤维增强混凝土异形柱框架抗震性能的试验研究[J]. 地震工程与工程振动,2008,28(6): 178-185WANG Teicheng, ZHANG Xuehui, ZHAO Hailong. Experimental study on seismic behavior of RC frames with specially shaped columns reinforced by fiber[J]. Journal of Earthquake Engineering and Engineering Vibration, 2008, 28(6): 178-185
[16]
蔡健,周靖,方小丹. 钢筋混凝土框架抗震位移延性系数研究[J]. 工程抗震与加固改造,2005(3): 2-6CAI Jian, ZHOU Jing, FANG Xiaodan. Study on seismic displacement ductility factor of reinforced concrete frame structure[J]. Earthquake Resistant Engineering, 2005(3): 2-6
[17]
LU Y, HAO H, CARYDIS P G, et al. Seismic performance of RC frames designed for three different ductility levels[J]. Engineering Structures, 2001, 23(5): 537-547
[18]
欧阳利军,陆洲导,陈惟珍. BFRP与CFRP约束混凝土短柱抗震性能计算分析[J]. 江苏大学学报(自然科学版),2013,34(4): 460-465OUYANG Lijun, LU Zhoudao, CHEN Weizhen. Computational evaluation of seismic performance of short columns confined with BFRP and CFRP[J]. Journal of Jiangsu University (Natural Science Edition), 2013, 34(4): 460-465
