摘要
外包钢与碳纤维布复合加固钢筋混凝土柱是一种新的加固形式。在其运用到结构抗震加固时,必须保证加固构件具有良好的延性破坏机制,为此进行了7根碳纤维布与角钢复合加固钢筋混凝土柱的低周反复试验,并编制了复合加固钢筋混凝土柱全过程分析程序,对轴压比、碳纤维布用量、角钢用量等影响复合加固效果的因素进行了分析。试验及电算结果均表明,复合加固后钢筋混凝土柱的极限承载力和耗能性能均有大幅提高。与仅用外包角钢加固柱相比,复合加固柱的抗震性能亦得到明显改善。
Reinforced concrete column strengthened with combination of bonded steel hoops （BSP） and carbon fiber reinforced polymer sheet （CFRP） is a new means of strengthening. Strengthening of structural seismic behavior must provide the structure with good ductility. Seven reinforced concrete columns strengthened with combination of bonded steel hoops and carbon fiber reinforced polymer sheet under cyclic loading are investigated to study the seismic behaviors. Based on the stress and strain relationship of reinforced concrete columns strengthened with combination of BSP and CFRP, a computer code for the columns is developed. Experimental and theoretical data are in good agreement. Factors such as axial load ratio, re-strengthening amount of BSP and CFRP, compression strength of concrete are analyzed. Remarkable improvement in ductility and load - carrying capacity of reinforced concrete columns has been observed.
出处
《土木工程学报》
EI
CSCD
北大核心
2005年第8期10-17,共8页
China Civil Engineering Journal
基金
湖北省重点科学技术发展计划资助项目(2000192104)
中国博士后科学基金资助项目(2002031147)
湖北省青年杰出人才基金(2004ABB014)
关键词
外包钢
碳纤维布
复合加固
钢筋混凝土柱
抗震性能
bonded steel hoop
carbon fiber reinforced polymer sheet （CFRP）
combination strengthening
reinforced concrete column
seismic behaviors
