摘要
在理论分析的基础上,提出了适用于混凝土框架节点抗震加固的碳纤维布-角钢组合加固方法,并通过2个节点试件的低周反复加载试验对该方法进行了检验。试验结果表明:碳纤维布-角钢组合加固体系能够有效地增强节点核心区的抗剪承载力,改变节点的剪切破坏模式,提高节点的承载力与延性,使得加固节点的强度和刚度退化得以滞后,耗能能力得到大幅度提高,从而显著改善了梁柱节点组合体的抗震性能。
Based on theoretical analysis, the CFRP sheets-steel angel composite strengthening scheme for upgrading the seismic behavior of RC beam-column joints was designed and the quasi-static tests of two RC beam-column joints were performed to verify the efficiency of the scheme. The test results showed that the seismic behavior of strengthened joint was improved significantly by the scheme, which was successful in enhancing the shear capacity of joint core, changing the shear mode of failure, increasing the load-carrying capacity and ductility, delaying the strength degradation and stiffness degradation, upgraded the energy dissipation capacity.
出处
《施工技术》
CAS
北大核心
2006年第4期74-78,共5页
Construction Technology
基金
上海市建筑科学研究院博士后科研基金
关键词
碳纤维布
钢筋混凝土
加固
梁柱节点
CFRP sheets
reinforced concrete
strengthening
beam-column joints
