【摘 要】桥梁预应力的施工主要包括：安装、张拉、注浆三道工艺，预应力安装的孔道位置控制，张拉的张拉力与伸长值控制，注浆的密实度控制这三项是关系预应力施工质量好坏的关键因素。本文着重对桥梁主桥预应力管道灌浆施工运用真空灌浆的施工工艺及注意事项进行探讨。
　　【关键词】预应力管道；真空灌浆；施工技术；质量控制
　　On the continuous box girder bridge prestressed grouting pipe
　　Sang Hong
　　(Chongqing Howard Construction Co., Ltd. China Chongqing 400060)
　　【Abstract】Prestressed bridge construction include: installation, tensioning, grouting three processes, pre-stressed position control channels installed, tension and elongation values ??of Tension Control, grouting of the density control is the relationship between the three pre-construction quality is good or bad stress the key factor. This article focuses on the main bridge prestressed bridge construction using vacuum grouting grouting pipeline construction technology and precautions are discussed.
　　【Key words】Prestressed pipe;Vacuum grouting;Construction technology;Quality control
　　
　　在后张有粘结预应力混凝土结构中，预应力筋的防腐蚀问题及与结构混凝土的共同工作问题是通

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