摘要
通过对六根碳纤维布增强钢筋混凝土梁正截面受力性能的试验研究,系统分析了梁跨中混凝土应变、钢筋应变、碳纤维布应变、挠度变化、裂缝分布、破坏形态的特点,重点探讨了碳纤维布层数、纵筋配筋率对钢筋混凝土梁受弯性能的影响。根据试验结果,提出了碳纤维布增强钢筋混凝土梁受弯承载力的计算方法和相应的简化计算公式。
Six reinforced concrete beams strengthened by carbon fiber sheets were studied experimentally.The characteristics of concrete strains in the middle span,steel strains,carbon fiber sheet strains,deflection development and crack distribution were analyzed systematically.The effect of the carbon fiber sheet layer number and reinforcement ratio on the flexural performance of the reinforced concrete beams is discussed.Based on the experimental results,the calculation method of flexural bearing capacity for the reinforced concrete beam strengthened by carbon fiber sheets is proposed,and the corresponding simplified calculating formula is put forward.
出处
《建筑科学》
北大核心
2009年第3期1-6,共6页
Building Science
基金
国家自然科学基金项目(59479001)
关键词
碳纤维布
梁
正截面
受弯性能
承载力
carbon fiber sheet
beam
normal section
flexural performance
bearing capacity
