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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 .
According to the plane hypothesis, the whole process of elastic-plastic deformation of FRP-reinforced concrete beams is analyzed and compared with the whole process of the elastic-plastic deformation of reinforced concrete beams. The effects of FRP- The results show that the formula of the normal section strength of the reinforced concrete beam is not suitable for the calculation of the normal section strength of the reinforced concrete beam with FRP. The FRP reinforced concrete beam The calculation method of the strength and the design of the normal section strength is in good agreement with the experimental results.