大跨度预应力混凝土连续箱梁桥悬臂浇筑施工监控

Cantilever Casting Construction Monitoring of a Long Span Prestressed Concrete Continuous Box Girder Bridge

以一座大跨度预应力混凝土连续箱梁桥为工程背景,介绍悬臂浇筑施工监控全过程,重点阐述有限元模型计算、预拱度设置、施工监测、反馈控制等关键技术要点,监控结果表明,最终成桥线形和结构应力状态满足设计要求。相关论述可供同类监控工程参考。

In this paper, the whole cantilever construction control process of a large span prestressed concrete continuous box girder bridge was introduced, focusing on the calculation of finite element model, pre-camber setting, construction monitoring, feedback control and other key technical points The monitoring results show that the alignment and the structural stress state of the finished bridge meet the design requirements The related discussion can be used for reference of similar monitoring project .