摘要
在良好的粘结状态下,基于平截面假定与线弹性假定,建立了CFRP加固RC简支梁的本构关系与力学平衡微分方程,再引入边界条件,对碳纤维增强复合板材加固钢筋混凝土简支梁的粘结界面温度剪应力的函数表达式进行了推导.通过表达式,阐明了温度剪应力与混凝土梁的抗弯刚度和粘贴层的硬度等因素有关.为加固结构在服役期健康状况评估和结构设计提供参考.
Based on the hypothesis of plane and linear elastic,differential equations were built according to the plane finite element theory and the mechanic balance relationship,temperature shear stress function of simply supported reinforced concrete（RC） beams strengthened with externally bonded carbon fiber reinforced polymer（CFRP） plates was derived in terms of boundary condition under perfect bonding conditions.It was shown from results that there are many factors such as flexural rigidity of concrete beams and toughness of adhensive influence temperature shear stress.It will give a reference to evaluate the health condition and design method for simply supported RC structures strengthened with externally bonded CFRP plates
出处
《交通科学与工程》
2012年第3期22-26,共5页
Journal of Transport Science and Engineering
基金
国家自然科学基金项目(51008036)
湖南省自然科学基金项目(10JJ4038)
交通运输部应用基础研究项目(2010318000006)
湖南省研究生创新基金项目(CX2010B356)
关键词
CFRP
加固
RC简支梁
温度
剪应力
CFRP
strengthen
simply supported RC beams
temperature
shear stress
