大型U形薄壳渡槽预应力施工

Construction of Large U-style Thin-shell Prestressed Launder

介绍东深供水改造工程大型“U”形薄壳预应力混凝土结构渡槽的现浇后张法的预应力施工 ,包括预应力的选择、环向无粘结和纵向有粘结预应力的施工。

In this article,authors introduce the on-site pouring post-tension construction of the large U-style thin-shell prestressed concrete launder of Dongguan-Shenzhen water-supply modification project,including selection of prestress,construction of circumferential non-cohesive prestress and longitudinal cohesive prestress,vacuum grouting in longitudinal prestress ducts and so on.