二次受力下预应力碳纤维布加固混凝土梁承载力计算  

Calculation of the Capacity of RC Beams Strengthened with Prestressed CFRP Sheets Under Secondary Loading

作　　者：曹璐[1] 刘瑛[2] 赵亮 

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]青岛理工大学商学院,青岛266033 [3]济宁市建设监理有限公司,济宁272000

出　　处：《青岛理工大学学报》2011年第5期10-16,共7页Journal of Qingdao University of Technology

基　　金：山东省自然科学基金资助项目(ZR2010EM066)

摘　　要：外贴预应力碳纤维布加固混凝土构件是一种简单且有效的加固方式.对预应力碳纤维布加固混凝土梁的全过程做了理论分析,根据应力—应变关系及变形协调原理,分析了预应力碳纤维布加固混凝土梁各个阶段的承载力计算,并计算了在二次受力时的抗弯承载力,各阶段理论分析计算值与试验值基本吻合,可为实际工程的加固设计提供理论参考.It is a simple and effective way to strengthen RC beams with prestressed CFRP sheets.This paper has made a theoretical analysis of the whole process of the RC beams with prestressed CFRP sheets.According to the stress-strain relationship and deformation coordination principle,it analyses the relevant calculations of RC beams with prestressed CFRP sheets of all stages and calculates the bending capacity under secondary loading.The calculation values of theoretical analysis are basically with the experimental values in each stage.This paper has provided a theoretical reference for reinforcement designs of practical projects.

关 键 词：混凝土梁 预应力 碳纤维布 二次受力 承载力 

分 类 号：TU375.1[建筑科学—结构工程]