陇海上行线白家庄特大桥铁路现浇简支箱梁支架施工方法研究

Research on Construction Method of Cast-in-situ Simply Supported Box Girder Support for Baijiazhuang Super Large Bridge of Longhai Railway Up-Line

临近铁路既有线路施工是铁路桥梁工程施工的重点和难点,尤其是箱梁施工前应选择合理的支架体系方案,并对方案进行充分的论证及检算,以确保其使用性和安全性。文章主要介绍了在既有运营线干扰的情况下,铁路现浇简支箱梁采用支架法施工的方法,以及支架体系安装及拆除采取的相关措施,为类似工程积累了经验。

Construction of the existing adjacent railway lines is the key and difficult point of railway bridge construction,especially the reasonable support system scheme should be selected before box girder construction,and the scheme should be fully demonstrated and checked to ensure its usability and safety.This paper mainly introduces the construction method of cast-in-situ simple-supported box girder by bracket method under the interference of existing operation lines,and the related measures of bracket system installation and dismantling,which accumulates experience for similar projects.