京新高速改扩建工程现浇箱梁施工技术

Construction technology of cast-in-place box girder of Beijing to Xinjiang new high-speed

主要介绍京新高速公路大黄山至乌鲁木齐段改扩建工程现浇箱梁施工,从碗扣架的搭设、模板安装、碗扣支架预压、钢筋及预应力管道的制作及安装、箱梁混凝土浇筑及养护、预应力张拉、压浆、封锚等方面,总结现浇箱梁的施工技术要点。

The article mainly introduces the cast- in - place box girder construction project of Beijing to Xinjiang new high- speed mount Huangshan to Urumqi section, from the bowl erection, formwork installation, scaffolding, preloading reinforcement and prestressed pipe production and installation, pouring and mainten - ance of concrete box girder, prestressed tension and pressure grouting, anchor seal, construction techniques of cast - in - situ box girder were summarized.