斜拉桥大节段箱梁少支架施工技术

Less Construction Technology of Box Girder Bracket with Large Segment for Cable-stayed Bridge

斜拉桥混凝土箱梁常规施工方式为挂篮施工,根据桥梁实际工况变更为少支架施工,并进行了施工方案比选,详细介绍了少支架箱梁梁体施工工艺及控制要点,包括箱梁梁体节段划分,梁体混凝土浇筑工艺,梁体施工过程控制要点,整体组织与管理使质量更易保证,施工进度大幅度提高,整体节约了成本。

Conventional construction method of concrete box girder for cable-stayed bridge is hanging basket construction,according to actual working conditions, less bracket construction method is used in some bridge construction by construction scheme comparison, this paper introduces the construction process and control points of the box girder with less bracket, including segment division of box girder, pouring process of concrete for box girder, control points in box girder construction, integral organization and management ensure construction quality, which improves construction progress, saves cost.