中小跨径预制箱梁后张法张拉工艺问题及对策研究

 朱 岩

(陕西省交通建设集团公司,陕西  西安,710075

  要:以吴定高速公路建设为依托,对中小跨径预应力混凝土预制箱梁桥后张法施工工艺中重点、难点问题进行了梳理、总结和分析,找出了问题关键并针对性的提出了预防措施,取得了良好的效果,可供同类工程参考。

关键词:预应力箱梁;后张法;锚具;波纹管;钢绞线

中图分类号:U445        文献标识码:A

Study on the Problems and Countermeasures of Small and Medium Span Prefabricated Box Girder with Post-tensioning Process

ZHU Yan

Shaanxi Province Conmmunication Construction GroupXi’an 710075,China

AbstractBased on Wu Ding highway construction, the main point and difficulty in the construction  process about small and medium-span PC box girder bridge was studiedthe countermeasures and prevention measures were received a good engineering practice was also completed, which can be used as reference for similar projects.

key wordsprefabricated BoxPost-tensioning processanchoragecorrugated pipesteel strand