跨高速公路现浇梁施工在施工过程中受外界影响比较大,在各工序施工中需要考虑其下高速路的行车安全及施工方的自身安全,文中以天水山水一号大桥主梁跨越高速公路施工为例,介绍桥梁在河道中跨越高速公路施工时,以钢管柱和工字钢组合体系作为基础,搭设钢支撑少支架的现浇梁支架技术的应用。 Construction of cast-in-place beams across expressways is greatly affected by the outside world during the construction process. During the construction of each process, the traffic safety of the next expressway and the safety of the construction side must be considered. In this paper, the main beam of the Tianshui Shanshui No.1 Bridge across the expressway As an example, this paper introduces the application of cast-in-place beam support with steel support and small support to build a bridge based on the combination of steel column and I-beam.