摘要
根据平面假设 ,对纤维加强聚合材料 (FRP)加筋混凝土梁进行了弹塑性变形全过程分析 ,并与钢筋混凝土梁的弹塑性变形全过程进行了比较 ,分析了FRP加筋混凝土梁在不同配筋率下 ,其极限弯矩和极限曲率的变化规律 ,结果表明 :钢筋混凝土梁正截面强度的计算公式已不适用于FRP加筋混凝土梁的正截面强度计算 .给出了FRP加筋混凝土梁正截面强度验算和设计的计算方法 ,其计算结果与实验结果符合较好 .
The moment curvature relationship of the fiber reinforced polymer (FRP) reinforced concrete beams is analyzed based on the traditional “plane sections remain plane” assumption (the Bernoulli’s principle) in steel reinforced concrete beam theory. The variations of the ultimate moment and curvature versus the FRP ratio of FRP reinforced concrete beams are also calculated. The results show that the analyzing and designing methods for steel reinforced concrete structures could not be used in calculation of FRP reinforced concrete beams. Some simplified methods of analysis and design are proposed for calculating the moment resistance of FRP reinforced concrete beams. Calculated results of the new methods agree well with the experimental ones.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2000年第11期90-94,共5页
Journal of Xi'an Jiaotong University
基金
国家杰出青年科学基金!资助项目 (5 96 2 5 5 10 )
关键词
纤维加强聚合材料
加筋混凝土梁
强度
fiber reinforced polymer (FRP)
concrete beam
Bernoulli’s principle
