摘要
预应力碳纤维布加固混凝土梁技术中,碳纤维布放张后混凝土与碳纤维布之间的界面受力分析非常重要,同时能够对碳纤维布施加的最大初始预应力也是研究中关注的问题。基于碳纤维布与混凝土之间的双线性剪切-滑移模型,得出碳纤维布放张后碳纤维布与混凝土间不同初始预应力下界面剪应力的变化规律和计算方法,在此基础上提出能够对碳纤维布施加的最大初始预应力。
It is very important to analyze the forces at concrete-CFRP sheets interface after the tension of CFRP sheets in the technology of strengthening a concrete beam with the prestressed CFRP sheets. The maximum initial prestress that can be applied to CFRP sheets is also concerned in the research. It is obtained the changing law of the tensioned CFRP sheets- concrete interfacial shear stress and its calculation method based on CFRP sheets-concrete bilinear shear-slip model. According to which it is proposed the maximum initial prestress that can be applied to CFRP sheets.
出处
《工业建筑》
CSCD
北大核心
2007年第7期96-99,共4页
Industrial Construction
基金
国家"863"研究计划(2001AA336010)
国家自然科学重点基金(50238030)资助
关键词
预应力
碳纤维布
加固
界面应力
prestress CFRP sheets strengthen interfacial stress
