摘要
通过7个足尺混凝土梁柱节点的低周反复加载试验,对应用碳纤维布的两种空间框架节点加固方法及一种平面框架节点加固方法进行了分析研究。试验结果表明,所采用的不同加固方法均能够有效地增强节点核心区的抗剪性能,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退化和刚度退化得以滞后,耗能能力得到大幅度提高,从而有效改善了梁柱节点组合体的抗震性能。
To verify two seismic retrofit methods for joints in two-way frames and another seismic retrofit method for joints in one-way frames using CFRP sheets, seven full scale interior RC beam-column joints were tested under quasl-static cycle load. The test results showed that the seismic behaviors of strengthened joints were improved effectively by the schemes, which were 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
《建筑结构》
CSCD
北大核心
2006年第12期60-64,共5页
Building Structure
基金
上海市建设技术发展基金会科研项目(A0105150)
关键词
碳纤维布
加固
梁柱节点
CFRP sheets
strengthening
beam-column joints
