体外预应力碳纤维板加固技术研究

Research on Reinforcement Technology of External Prestressed Carbon Fiber Plates

摘要:

以义乌市某典型三跨预应力混凝土连续箱梁桥为研究背景,根据桥梁病害情况提出了体外预应力碳纤维板加固方案并针对加固要点进行分析，从施工监控的角度评判了体外预应力碳纤维板加固的效果。结果表明，体外预应力碳纤维板加固可以较好地改善桥梁结构的线形和受力状况，提升桥梁的安全冗余度，能满足加固设计的要求。

Abstract:

Taking a typical three-span prestressed concrete continuous box girder bridge in Yiwu City as the research background, the reinforcement scheme of external prestressed carbon fiber plates is put forward according to the bridge disease, and the reinforcement essentials are analyzed. The reinforcement effect of external prestressed carbon fiber plate is judged from the perspective of construction monitoring. The results show that the reinforcement of external prestressed carbon fiber plates can better improve the alignment and stress condition of the bridge structure, improve the safety redundancy of bridge, and satisfy the requirements of reinforcement design.