UHPC简支梁桥体外预应力束施工关键技术研究  

Research on Key Construction Technologies of External Prestressing Tendons for UHPC Simply-Supported Beam Bridges

作　　者：罗勉 曾俊志 黄鑫 Luo Mian;Zeng Junzhi;Huang Xin(Liuzhou Ovm Engineering Co.,Ltd.,Liuzhou,China)

机构地区：[1]柳州欧维姆工程有限公司,广西柳州

出　　处：《科学技术创新》2025年第8期193-196,共4页Scientific and Technological Innovation

摘　　要：UHPC简支梁桥因箱梁结构更紧凑的特点,体外预应力束穿索及张拉空间都较狭窄,针对极限空间普通施工工法无法施工的工况,提出一种在极限空间工况下体外索牵引及安装张拉千斤顶的施工工艺,解决了该类体外索在有限空间条件下施工安装的技术难题。UHPC simply supported beam bridges,due to the more compact box girder structure,have a narrower space for the strand pulling and tensioning of external prestressing tendons.In response to the construction conditions where ordinary construction methods cannot be applied due to limited space,a construction technology for the traction and installation of tensioning jacks for external tendons under extreme space conditions is proposed,solving the technical difficulties of construction and installation of such external tendons under limited space conditions.

关 键 词：UHPC简支梁桥 体外预应力束 牵引 张拉 有限空间 

分 类 号：TU375[建筑科学—结构工程]