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预应力混凝土连续桥梁目前是我国公路桥梁建设中常用的一种桥梁建筑模式,预应力混凝土连续桥梁有等截面预应力混凝土连续桥梁、变截面预应力混凝土连续桥梁等几种建设模式,在这几种桥梁建筑模式中,桥梁强度和抗震性能最好的就是变截面混凝土连续桥梁。本文针对变截面连续箱梁内部齿板张拉技术存在的问题进行分析,并提出了一些预防变截面连续箱梁内部齿板以锚固区在张拉后出现问题的解决方案,为变截面连续梁桥的设计和建造提供参考资料。
Prestressed concrete continuous bridge is currently a bridge construction mode commonly used in the construction of highway bridges in our country. Prestressed concrete continuous bridges include continuous prestressed concrete bridges with constant cross-section and prestressed concrete continuous bridges with variable cross-sections, In the bridge construction mode, the best bridge strength and seismic performance is the continuous concrete bridge with variable cross section. In this paper, the problems existing in the internal tooth plate tensioning technology of continuous box girder with variable cross section are analyzed, and some solutions are proposed to prevent the internal tooth plate of the continuous box girder with variable cross-section and cause problems in the anchorage zone after tensioning, The design and construction of the bridge provide reference materials.