浅谈南水北调蒲阳河渠道倒虹吸管身施工技术

Construction Technology of Inverted Siphon Tube on the River Diversion Channel

倒虹吸、渡槽是设计上常用的穿越或跨越河流、灌渠、铁路、公路的大型交叉建筑物,蒲阳河渠道倒虹吸即为河渠交叉工程。倒虹吸施工技术在先期开工的滹沱河和唐河倒虹吸中得到了广泛应用,不外乎用布料机或塔吊输送混凝土,管身用钢模台车或组合钢模板成型。蒲阳河倒虹吸管身全部采用散装钢模板和满堂脚手架支撑体系成型,布料机为水平和斜坡行走式,极大地丰富了倒虹吸管身施工技术。

Inverted siphon,aqueduct are commonly used in the design when encountering rivers, irrigation channel, railways, highways. The Puyanghe River inverted siphon is a cross-river projecl. In construction, either distributor or tower crane is used to transport concrete. The inverted siphon uses bulk steel formwork and scaffolding full support system with the level and slope type distributors, which greatly enriched the inverted siphon construction technology.