预应力CFL增强RC梁有效预应力研究  

Study on Effective Prestress of RC Beams Strengthened with Prestressed CFL

作　　者：李保军[1] 

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《科学技术与工程》2010年第31期7841-7843,7847,共4页Science Technology and Engineering

摘　　要：粘贴预应力纤维增强复合材料(FRP)对土木建筑结构进行加固和修复,可以提高工程效率,改善构件的受力状况。有效预应力是预应力研究领域中最为关键的参数。以碳纤维薄板(CFL)加固RC梁为研究对象,进行理论研究计算有效预应力和采用间接预应力施加方法进行预应力CFL增强RC实验并测得有效预应力。并将理论计算结果与实验结果进行了比较,两结果大体上比较接近,理论计算结果较实验值偏大。The application of bonded carbon fiber reinforced polymer（FRP） to the exposed faces of concrete members provides an efficient,light-weight,non-corrosive alternative to other rehabilitative methods.The method of using prestressed CFL for strengthening structures is efficient with the advantages of external prestress.Effective prestress is a key parameter in prestress field.Based on RC beams strengthened by carbon fiber laminate（CFL）,theoretical formula is given for calculating the effective prestress and the experimental results by having experimental programs of RC beams strengthened with prestressed CFL indirectly.The two results are closed to each other in general and the theoretical results are larger than the experimental data

关 键 词：CFL 预应力 有效预应力 

分 类 号：U445.584[建筑科学—桥梁与隧道工程]