CFS加固开裂混凝土梁的抗剪性能研究  

Study on shear behavior of pre-cracked RC beams strengthened with externally bonded CFS

作　　者：廖娟[1] 王欣[2] 

机构地区：[1]浙江大学城市学院,杭州310015 [2]上海理工大学,上海200093

出　　处：《建筑结构》2010年第5期47-49,共3页Building Structure

摘　　要：针对已卸载的开裂钢筋混凝土梁开展碳纤维布(CFS)的加固性能研究,共进行了10根混凝土梁的试验,其中2根对比梁,8根CFS加固梁。采用USAP程序建立有限元分析模型,研究了U形CFS箍用量和曾加荷载对加固效果的影响,并与试验结果作对比。研究表明,当曾加荷载超过一定值后,承载力不再提高,加固无效。The shear behavior of pre-cracked RC beams strengthened with externally bonded CFS, of which loads have been removed before strengthening, was studied. A series of 10 RC beams, including 2 contrast beams and 8 beams reinforced with CFS, were tested to find out the effect of CFS levels and preload. The finite element model was established using USAP software and the analysis results were compared with the experiment ones. The study indicates that when the preload exceeds the upper limit, the bearing capacity can＇t be increased any more, and the strengthening is of no use.

关 键 词：开裂混凝土梁 加固 碳纤维布 试验 抗剪性能 

分 类 号：TU375.1[建筑科学—结构工程]