核心区外碳纤维布增强混凝土框架节点抗剪性能试验研究与机理分析  

EXPERIMENTAL INVESTIGATION AND MECHANISM ANALYSIS OF RC BEAM-COLUMN JOINTS SHEAR PERFORMANCE STRENGTHENED AROUND CORE BY CFRP SHEETS

作　　者：王步[1] 王溥[2] 夏春红[2] 

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

出　　处：《工业建筑》2005年第7期29-33,38,共6页Industrial Construction

基　　金：上海市建设技术发展基金会科研项目(编号:HT0101022A1)。

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。Cores of RC beam-column joints in two-way frames can＇t be directly upgraded as that in one-way frames because of the existence of two-way beams. In this paper, five full-scale beam-column joints are tested under quasi-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.

关 键 词：碳纤维布 加固 梁柱节点 增强混凝土 抗剪性能 框架节点 机理分析 试验研究 节点核心区 直接加固 

分 类 号：TU375.4[建筑科学—结构工程]