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为了研究纤维增强材料(CFRP)加固混凝土(RC)框架结构的关键构件对结构整体抗震性能的影响,提出基于CFRP加固柱极限破坏状态来确定加固结构抗震性能水平限值的方法,定义了CFRP加固RC框架结构的4个极限状态,然后采用增量动力分析(IDA)方法对比分析了RC框架结构加固前后的抗震性能和基于性能的地震易损性。研究发现:RC框架结构在CFRP加固后,结构发生了薄弱层的转移,同时结构会提前出现变形,消耗地震能量,结构的水平承载能力、延性和抗震能力得到了提高。
In order to study the influence of the key components of CFRP reinforced concrete (RC) frame structure on the overall seismic performance of the structure, a method to determine the level of the seismic performance of the reinforced structure based on the ultimate failure state of the CFRP reinforcement column is proposed. The CFRP reinforcement RC frame structure of the four limit states, and then using incremental dynamic analysis (IDA) method comparative analysis of the RC frame structure before and after strengthening the seismic performance and performance-based seismic vulnerability. The results show that the RC frame structure is strengthened by CFRP and the structure is weakly transferred. At the same time, the deformation of the RC frame prematurely consumes the seismic energy, and the horizontal bearing capacity, ductility and seismic capacity of the RC frame structure are improved.