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为了解决桥梁预应力小箱梁预制斜度错误,造成箱梁报废等重大经济损失问题,该文结合工程实例论述了采用箱梁反向布置和桥台盖梁、背墙局部改造及轴线不变的方法,解决桥梁预应力小箱梁预制斜度错误。并提出了改造结构设计和施工要点,对桥梁结构稳定和变形进行了验算,结果表明各项指标均满足规范要求,该方法安全、经济。
In order to solve the problem of the precast precast slant of the prestressed small box girder and cause the significant economic loss such as the scrap of the box girder, this paper discusses the application of the box girder reverse arrangement and the abutment cover girder, the partial reconstruction of the back wall and the unchanged axis with the engineering examples Method to solve precast bridge girder precast tilt error. The key points of the design and construction of the structure are proposed. The stability and deformation of the bridge are checked. The results show that all the indexes meet the requirements of the code. The method is safe and economical.