高铁车站大跨度预应力现浇梁施工技术

Construction Technology of Large-span Prestressed Cast-in-place Girder on High-speed Rail Station

砀山南站候车厅屋面设计为现浇预应力钢筋混凝土结构,预应力梁截面尺寸大,跨度大,且施工时支撑体系属于高架支模。本文详细介绍了高支模体系的设置和预应力体系的建立,成功地解决了高支模体系的稳定性差和高空预应力施工难的问题,确保了大跨度预应力现浇梁的施工质量,可为类似工程的施工提供参考。

The roof design of Dangshan South Railway Station waiting hall is of cast-in-place prestressed reinforced concrete structure,which is with a large size and large-span prestressed beam section and a high frame formwork support system.This article introduced the establishment of high-formwork system and prestressed system,which successfully solved the poor stability problem of the high-formwork system and the difficulty of the high altitude prestressed construction,ensured the construction quality of large-span prestressed cast-in-place girder,and provided references for similar engineering construction.