特大桥钢箱梁顶推施工与质量控制措施研究

Research on Incremental Launching Construction and Quality Control Measures for Steel Box Girder of Extra-large Bridges

特大桥是一类比较特殊的桥梁,其单孔跨径通常在150 m以上。在特大桥工程项目建设中,上部结构以钢混组合梁为主,使钢箱梁的顶推施工成为此类桥梁的关键环节。因此,要掌握钢箱梁顶推施工要点,并采取有效的技术措施控制顶推质量。基于此,文章依托工程实例,对特大桥钢箱梁顶推施工与质量控制措施展开论述,主要介绍了钢箱梁顶推施工要点及钢箱梁顶推质量控制措施,以供参考。

The extra-large bridge is a kind of special bridge with a single hole span usually exceeding 150 m.In the construction of the extra-large bridge engineering project,the superstructure is mainly composed of steel-concrete composite girders,which makes the incremental launching construction of steel box girder become the key link of such bridges.Therefore,it is necessary to master the key points of steel box girder incremental launching construction and take effective technical measures to control the incremental launching quality.Based on this,this paper relies on engineering examples to discuss the incremental launching construction and quality control measures for steel box girder of extra-large bridges.It mainly introduces the key points of the incremental launching construction of the steel box girder and the quality control measures of the incremental launching of the steel box girder for reference.