机构地区: 华南理工大学土木与交通学院
出 处: 《郑州大学学报(工学版)》 2007年第1期60-63,共4页
摘 要: 粘贴预应力纤维增强复合材料(FRP)片材对土木建筑结构进行加固和修复,可以提高工程效率.从理论分析着手,推导了预应力FRP片材增强RC梁界面层的剪应力的计算公式,分析了预应力作用下FRP片材和混凝土之间的界面层剪应力分布,并通过有限元对碳纤维薄板(CFL)增强RC梁作了数值实验验证.探讨了初始预应力施加量,FRP片材的厚度以及界面层厚度对界面剪应力的影响. Bonding prestressed fiber reinforced polymer(FRP) plate can be used to strengthen and repair civil engineering structures effectively. Based on the theoretical analysis, this paper deduces computing formulas to discuss the distributions of shear stresses on interracial layer between the prestesses FRP plate and concrete members of strengthened RC beams, and validates the interracial shear stresses of the RC beams strengthened with carbon fiber laminate (CFL) by FEM. The research discusses the applied prestress value,the thickness of CFL and adhesive affecting the interracial shear stresses.