碗形箱梁施工关键技术研究与实践

Study and Practice on Construction of Bowl-shaped Concrete Box Girder

碗形混凝土箱梁的外形和受力均较复杂,变曲率的弧形断面不易控制,对模板支架系统的设计和施工以及混凝土浇筑带来了很大难度。结合某实际桥梁工程,对碗形箱梁施工的关键技术进行研究和实践,总结提出了可靠的碗形箱梁施工支架模板支撑体系和混凝土浇筑工艺,并取得了很好的工程效果,可为类似桥梁施工提供借鉴。

Bowl- shaped box girder has a complicated configuration and structural behavior, which brings great difficulty in the design and construction of framework and also concrete east. By taking a practical bridge as engineering example, study and practice on the construction of bowl - shaped concrete box girder have been conducted, and some favorable construction techniques are also concluded and prooved to be efficient, which provides practical guidance for constrution of similar bridges.