某大桥先简支后结构连续T型梁预制与安装技术探析

混凝土T型梁因为外形简洁美观、建筑高度较小，既具有全应力混凝土与钢筋混凝土梁结构的一些主要优点，又基本排除了两者的主要缺点，是一种受力性能较合理的结构形式。以贵州茅草坪大桥先简支后结构连续T型梁施工为例，对T梁的钢筋的制作、模板安装、波纹管的定位、混凝土浇筑、预应力张拉、孔道压浆以及梁片架设等工艺流程做出了一个总结，并通过分析得出T梁预制过程中的难点以及注意事项，希望对今后同类型工程起到参考作用。

Precast of T-Beam with Continuous Simply Supported Structure and Its Installation

Concrete T-beam is a reasonable structural frame. It has a nice profile and shallow beam depth. Besides, it also contains the advantages of resultant stress concrete and reinforced concrete structure, and there is no major disadvantage of the two at the same time. Taking an example of Maocaoping Bridge in Guizhou province, this paper analyzes the construction procedure of simple-supported after structure system continuity T-beam. The paper also introduces the technology of steel production and formwork, the position of bellows, concrete pouring, post-tension tension, duct grouting, and analyzes the difficult points and matters needing attention. It hopes to provide reference for other similar projects.