碳纤维布-角钢组合加固混凝土框架节点抗震性能试验研究  

Experimental Study on Seismic Behavior of RC Beam-column Joints Compositely Upgraded by CFRP Sheets and Steel Angel

作　　者：王步[1] 夏春红[2] 王溥[2] 刘伯权[1] 

机构地区：[1]长安大学,陕西西安710061 [2]上海市建筑科学研究院,上海200032

出　　处：《施工技术》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

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.

关 键 词：碳纤维布 钢筋混凝土 加固 梁柱节点 

分 类 号：TU375.05[建筑科学—结构工程]