大跨度折叠式移动膺架在现浇连续箱梁施工中的应用

现浇箱梁的支架按照交通运输、地形地貌、墩身高度的不同往往采用不同的支架形式,就架空移动支架而言,国内大多采用移动模架或造桥机,当箱梁宽而重或交通运输受限时往往被迫采用落地支架,当地质地形条件不好或墩身高度较大时,施工单位往往在经济上又难以承受,采用大跨度折叠式移动膺架可以较好地解决类似支架施工难题。介绍了重庆鱼洞长江大桥北引桥两联6×40 m连续梁（梁宽20.3 m）箱梁现浇工程中采用的折叠式移动膺架技术。

Construction Application of Large-spaned Foldable and Movable Corbelling System for Cast-in-place Continuous Box Girder Bridge

Different kinds of movable bracket construction method,such as travelling form and bridge fabrication machine with travelling form,have been used to construct cast-in-place box girder bridge.However,it is hard to use these methods to cast wide box beam segments,when transportation service is poor,where the consol supports method is the only option.Box girder bridge with high piers means high cost to use consol supports method,especially under poor geological condition.Thus,a new large-spanned foldable and m...