摘要
分别采用碳纤维布加固、碳纤维布钢板复合加固2种方法对两榀相同的损伤钢筋混凝土框架进行加固.为考察加固效果保证加固框架在抗震区应用的安全性,通过拟静力试验,对比分析了损伤加固框架和原框架的抗震性能,研究表明:加固后的损伤框架承载能力有了大幅度的提高,其中复合加固法能更好地提高结构的屈服荷载;采用碳纤维布加固框架的耗能能力明显高于复合加固框架;两种加固框架的位移延性系数均大于4,明显超过未加固框架,满足《抗震规范》中延性框架要求.
Two RC frames damaged at same degree were reinforced by CFRP sheets and combination of both CFRP and steel sheets.In order to inspect the strengthening effects and ensure the safety of application in the earthquake zone,the earthquake resistant behavior of the two reinforced damaged frames was compared with the undamaged one through pseudo static test.Results show that the seisimic bearing capacity of the two reinforced frames is obviously enhanced,and the combination strengthening frame's yield load is higher than the CFRP sheets strengthening frame;but the CFRP sheets strengthening frame's energy dissipation capability is higher than the other strengthening one obviously;the two strengthening frames' ductility coefficients are better than the required value 4 for the ordinary ductile frame.
出处
《河北工业大学学报》
CAS
北大核心
2012年第5期99-102,共4页
Journal of Hebei University of Technology
基金
河北省住建厅科技研究项目(2009-206)
