摘要
研究碳纤维布加固钢筋混凝土构件内折角处的锚固构造,以解决现行的内折角处锚固构造做法较少且较为复杂的问题。对两种机械锚固(角钢锚固和钢板锚固)、碳纤维布压条锚固及对比试件进行从开始加载到破坏的试验研究,描述试件的破坏过程,分析了荷载-钢筋、碳纤维布应变关系。通过正截面承载力对锚固效果进行评价。结果表明:机械锚固可满足承载力要求,并以角钢锚固的效果更好,推荐采用角钢锚固构造;而碳纤维压条锚固的承载力偏低,建议将其对构件的加固效果予以折减。
Three methods of strengthening structures in the inflexed angle zones are put forward for CFRP reinforced concrete members,which are made to do destructive experiments with comparison specimens.Through analysis of the load-ultimate strain relationship and cross-section capacity,the anchorage effects are evaluated.These researches can be of help to the design of practical project and can be adopted by other projects.The experiment＇s results indicate that the strengthening effect of mechanical anchorage is better than the one of CFRP.The paper recommends the method of strengthening structure by angle steel.
出处
《工业建筑》
CSCD
北大核心
2011年第7期125-128,共4页
Industrial Construction
基金
辽宁省教育厅科技攻关项目(2008605)
关键词
碳纤维
加固
钢筋混凝土
内折角
锚固
CFRP
strengthen
reinforced concrete
inflexed angle zones
anchorage
