预应力混凝土梁桥关键施工技术分析

Analysis of Key Construction Techniques for Prestressed Concrete Beam Bridges

为保证预应力混凝土梁桥的施工质量,文章总结了连续梁桥的形式、受力特点等,分析了悬臂浇筑法的施工流程和特点。同时,以某公路连续箱梁桥为研究对象,从0#块支架计算和墩梁临时固结、挂篮预压、合龙等方面分析了施工要点,最后从线形控制和应力控制两方面阐述了连续梁桥的施工控制方法,研究成果可供类似桥梁结构施工借鉴。

In order to ensure the construction quality of prestressed concrete beam bridges,the form and stress characteristics of continuous beam bridges are summarized,and the construction process and characteristics of cantilever pouring method are analyzed.At the same time,taking a continuous box girder bridge on a certain highway as the research object,the construction points were analyzed from the aspects of 0#block support calculation,temporary consolidation of pier and beam,hanging basket preloading,closure,etc.Finally,the construction control methods of the continuous girder bridge were elaborated from the perspectives of linear control and stress control.The research results can be used as a reference for similar bridge structure construction.