现浇混凝土连续箱梁后张法预应力张拉施工技术

CONSTRUCTION TECHNOLOGY OF POST TENSIONED PRESTRESSED TENSIONING OF CAST-IN-SITU CONCRETE CONTINUOUS BOX GIRDER

我国公路桥梁建设规模不断扩大,公路桥梁施工的各项施工技术也得到了深入发展,其中后张法预应力张拉技术作为桥梁施工中的一项关键技术,直接影响桥梁工程的施工质量。本文结合珠海南湾大道改造工程主线桥现浇连续箱梁预应力张拉施工经验,对后张法预应力张拉施工工艺、质量控制及常见问题处理措施进行了阐述,以期与同行分享。

With continuous expansion of scale of highway bridge construction in China, various construction technologies of highway bridge construction have also been deeply developed. As a key technology in bridge construction, post tensioning prestressed tensioning technology directly affects the construction quality of bridge engineering. Combined with the prestressed tensioning construction experience of cast-in-situ continuous box girder of the main bridge of Zhuhai Nanwan Avenue reconstruction project, the paper expounds the post tensioning prestressed tensioning construction technology, quality control and common problem treatment measures, in order to share with peers.