四川大学学报：工程科学版2012，Vol.44Issue(3)：71-77,7.
复合材料加固混凝土梁斜截面承载力的研究
Research on Bearing Capacity of Concrete Beams Shear Reinforced by FRP Sheets
摘要
Abstract
The load carrying capacity of reinforced concrete（RC） beams externally bonded with fibre reinforced polymer（FRP） depends on the reinforcing arrangement,FRP material,FRP-concrete bonding interface stress and initial parameters of the RC beams.To repair the structures damaged in Wenchuan Earthquake,the RC beams with different reinforcing arrangement,stirrup ratio,shear span ratio and concrete strength were investigated.The results showed that externally bonded FRP sheets can increase the shear resistance and ductility greatly,arrest concrete crack extension,and the rigidity of strengthened beams also increased greatly.The deformability of the beam strengthened can be improved by increasing the beam height and the concrete strength.The load carrying capacity and deformability of the beam strengthened can be enhanced by increasing the stirrup ratio,but the load carrying capacity increases more obvious.Finally,the oblique cross section＇s bearing capacity of the FRP reinforced concrete beams was analyzed,and the theoretical and practical formula for calculating was established.The results showed that the theoretical calculation is in accord with the experimental data.关键词
混凝土梁/纤维复合材料（FRP）/承载力Key words
concrete beam/fibre reinforced polymer/FRP/carrying capacity分类
建筑与水利引用本文复制引用
董江峰,王清远,侯敏,何东..复合材料加固混凝土梁斜截面承载力的研究[J].四川大学学报：工程科学版,2012,44(3):71-77,7.基金项目
国家杰出青年基金资助项目 （）
教育部创新团队基金资助项目 （）
