外贴纤维布加固钢筋混凝土梁锚固长度的确定  

DEFINITION OF ANCHORAGE LENGTH OF RC BEAMS STRENGTHENEDWITH FIBER SHEETS

作　　者：敬登虎[1] 曹双寅[1] 

机构地区：[1]东南大学,南京210096

出　　处：《工业建筑》2004年第12期85-86,99,共3页Industrial Construction

基　　金：.NULL.

摘　　要：采用拱体桁架模型 ,对通过外贴纤维布加固钢筋混凝土梁的端部锚固问题进行了理论分析。分析中考虑了斜裂缝对加固效果的影响 ,建立了拱体桁架简化计算模型。分析了加固部位的确定、纤维布的理论断点 ,通过理论分析 ,得到所需的纤维布端部粘结力H ,从而确定锚固长度lf。A theoretical analysis of end anchorage of RC beams strengthened with fiber shee ts is carried out using a model of arch truss, in which the effect of inclined cracks on the strengthening effectiveness is taken into account, and a simplifie d calculation model of the arch truss is also established.The analysis of determ ining strengthening position and the theoretical breaking point of fiber sheets is also conducted. The necessary bonding force at the end of fiber sheets, H is obtained through the theoretical analysis, thus defining the anchorage length l f.

关 键 词：锚固长度 钢筋混凝土梁 纤维布 加固效果 斜裂缝 桁架模型 粘结力 端部锚固 理论分析 简化计算 

分 类 号：TU746[建筑科学—建筑技术科学]