EXPERIMENTAL INVESTIGATION AND MECHANISM ANALYSIS OF RC BEAM-COLUMN JOINTS SHEAR PERFORMANCE STRENGTHENED AROUND CORE BY CFRP SHEETS
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摘要: 由于直交梁的存在,混凝土空间框架节点核心区无法象平面框架一样直接加固。针对这一工程难题,采用两种碳纤维布加固核心区外侧梁、柱端的方法,进行了五个足尺混凝土框架节点的低周反复加载试验,以检验加固后节点核心区抗剪性能的改善效果,并针对不同加固方法,对碳纤维布的增强机理进行了分析研究。Abstract: Cores of RC beam- column joints in two-way frames canct be directly upgraded as that in one-way frames because of the ex istence of two-way beams. In this paper, five full-scale beam- column joints are tested under quas-i static cycle load, to evaluate the shear performance improvement of beam- column joints upgraded by two different CFRP sheets strengthening methods that are around core, and the strengthening mechanism is also presented for different methods.
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Key words:
- CFRP sheets /
- strengthening /
- beam-column joints
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马永欣,郑山锁.结构试验.上海:上海科学出版社,2001.72~73 [2] 唐九如.钢筋混凝土框架节点抗震.南京:东南大学出版社,1989.77~79
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