负载下碳纤维布加固钢结构受弯构件理论研究  

Theoretical Study on Flexural Members of Steel Structures Strengthened with CFRP under Load

作　　者：张建鹏 ZHANG Jianpeng(Shandong Academy of Building Research Co.,Ltd.,Jinan Shandong 250031,China;Shandong Testing Center for Quality of Construction Engineering Co.,Ltd.,Jinan Shandong 250031,China)

机构地区：[1]山东省建筑科学研究院有限公司,山东济南250031 [2]山东省建筑工程质量检验检测中心有限公司,山东济南250031

出　　处：《工程质量》2023年第1期45-52,共8页Construction Quality

摘　　要：我国建筑行业已步入一个以既有建筑改造为主,新建建筑为辅的阶段。本文主要对负载下碳纤维加固钢结构构件的理论研究,首先,对粘贴碳纤维加固钢结构构件的破坏形式进行介绍;其次,由于实际工程中很容易发生端部剥离破坏,本文提出并推定出碳纤维布滞后应变的计算方法;最后,通过对构件受力变形过程进行分析,计算其弯矩特征值,对界面应力进行分析,得出粘结剪应力方程、剥离应力方程,为实际工程提供参考。In recent years,with the development of society,China’s construction industry has entered a stage in which the transformation of existing buildings is mainly supplemented by new buildings. This paper mainly focuses on the theoretical research of steel structure members strengthened with carbon fiber under load. Firstly,the failure forms of steel structure members strengthened with carbon fiber are introduced.Secondly,because the end peeling failure is easy to occur in practical engineering,this paper puts forward and infers the calculation method of lag strain of carbon fiber cloth. Finally,through the analysis of the stress and deformation process of the member,the characteristic value of bending moment is calculated,and the interface stress is analyzed,the bond shear stress equation and peel stress equation are obtained,which can provide reference for practical engineering.

关 键 词：负载下 碳纤维布 破坏形式 滞后应变 粘结应力 剥离应力 

分 类 号：TU31[建筑科学—结构工程]