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由于桥梁结构受力情况比较复杂,单一采用一种加固方式往往不能满足结构安全的要求。采用体外预应力筋加固受到一定的局限,研究利用碳纤维布与预应力筋联合加固混凝土连续梁结构。加固混凝土连续梁时,首先施加体外预应力,然后再粘贴碳纤维布,针对两种方法联合加固的混凝土连续梁进行试验研究。研究结果表明,联合加固混凝土连续梁在受力阶段表现出更好的变形性能,加固提高了梁的承载能力。
Due to the complicated structure of the bridge structure, a single reinforcement method often can not meet the requirements of structural safety. The use of external prestressed tendons reinforcement is subject to certain limitations, the study of the use of carbon fiber reinforced plastic prestressed reinforcement and continuous beam structure. When the concrete continuous beam is reinforced, external prestressing is applied first, then the carbon fiber cloth is affixed, and the concrete continuous beam reinforced by the two methods is tested. The results show that the continuous reinforcement of concrete beams shows better deformation performance in the stress phase, and the reinforcement increases the bearing capacity of the beam.