武广客运专线双线整孔箱梁预制施工技术

Construction technique discussion of double-line full-hole box girder prefabrication for Wuguang special railway line

结合武广客运专线双线整孔箱梁预制的施工方案,介绍从模板、钢筋、混凝土浇筑、养护到张拉、压浆封锚等施工工序全过程,并重点介绍混凝土箱梁裂纹、徐变上拱、箱梁四支点高差控制等关键施工技术。

Combining with the construction method of double-line full-hole box girder prefabrication for Wuguang special railway line,the article in-troduces the construction working procedure from making mold for the setting of concrete to maintaining,stretching,squeezing and seal-ing-off and covering anchorage. It focuses on the key construction technology of controlling the crack,creep upwarp and drop in level of 4 fulcrums of concrete box girder.