摘要
碳纤维布加固混凝土结构技术的研究近年来发展很快。在已有试验结果分析的基础上 ,本文对碳纤维布加固钢筋混凝土梁受弯剥离的破坏形态进行了研究 ,通过粘结区域各种应力的解析 ,提出了剥离破坏的数学判据 ,以此建立了相应的剥离承载力计算方法 ,该方法中考虑了粘结正应力和剪应力的综合作用。经与试验结果的比较 ,证明本文方法计算碳纤维布加固钢筋混凝土梁受弯剥离承载力具有较高的精度 ,从而完善了碳纤维布加固混凝土梁的设计理论。
The research for technique of adopting Carbon Fiber Sheets (CFS)to repair and strengthen concrete structures is developing rapidly in recent years.In the paper,on the basis of existed tested results,the failure mode for flexural debonding of RC beams strengthened with CFS has been investigated,through the explaination of different stresses in bonding area,that,the methematical criterion of debonding failure is put forward,hence,a corresponding calculation method of debonding bearing capacity,considering the composite action of bonding normal stress and shearing stress,is established accordingly.From the comparison between the calculating values and tested results,it is proved that the precision of calculation method for the flexural debonding bearing capacity of RC beams strengthened with CFS,in the paper,is higher,thus,the design theory of RC beams strengthened with CFS is being perfected.
出处
《土木工程学报》
EI
CSCD
北大核心
2004年第2期23-27,32,共6页
China Civil Engineering Journal
基金
863计划资助项目(编号 :2 0 0 1AA3360 1 0 )
博士后基金资助项目(编号:中博基(2 0 0 2 ) 1 1号 )
自然科学基金资助项目(编号:50 2 380 30 )
关键词
碳纤维布
钢筋混凝土梁
剥离
承载力
计算方法
carbon fiber sheets
reinforced concrete beams
debonding
bearing capacity
calculation method
