基于反拱法的预应力碳纤维布加固受弯构件试验研究

针对常规预应力碳纤维布加固需要特制专用锚具的现实困难,以体外预应力筋使梁体产生反拱进而实现碳纤维布的张拉,并开展了大量的试验研究。试验结果表明:基于反拱法的碳纤维布加固钢筋混凝土梁体的极限承载能力可提高70%以上,挠度和裂缝等使用性能也得到了大幅提高。基于反拱法的预应力碳纤维布加固避免了特制专用锚具,极具工程推广价值。

The Experimental Research on the Prestressed Carbon Fiber Cloth Reinforcement Flexural Members Based on the Inverted Arch Method

For the realistic difficulties that conventional prestressed carbon fiber reinforcement needs special anchorage, this paper expounded the external prestressed tendons which produced the inverted arch of beam body, and achieved the tension of carbon fiber cloth. It also carried out a large amount of experimental research on the prestressed carbon fiber cloth reinforcement based on the inverted arch method, which avoided special anchorage and had great engineering promotion value.