小箱梁结构应用广泛,但结构断面尺寸偏薄,本文从从预应力钢束灌浆工艺、施工期反拱的合理控制、冬季施工工艺控制、湿接缝混凝土质量保证、钢筋保护层的控制等方面进行施工工艺改进研究,确保结构的耐久性,研究具有重要的工程意义。 Small box girder structure is widely used, but the structural section size is too thin. This article from the prestressed steel grouting process, the reasonable control of the arch construction during the winter construction process control, wet seams concrete quality assurance, reinforced protective layer control Aspects of the construction process improvement research to ensure the durability of the structure, the study has important engineering significance.