摘要
东海大桥是我国第一座跨海大桥,对预制70m箱梁施工各环节要求非常高。阐述70m箱梁预制过程中的预应力张拉和真空辅助压浆技术。预应力筋张拉包括安装预应力管道、制作及穿放钢绞线、张拉钢绞线等工艺。重点介绍真空辅助压浆技术在东海大桥箱梁预制中的应用。
East sea Bridge is the first sea-span bridge in china. The prestressing technology and vacuum aid grouting technology for precasting 70 m span box girders of East sea Bridge is discussed in this paper. The prestressing technology contains locating of duct, fabrication and laying of stranded wire and stretching work of tendon and so on. The application of vacuum aid grouting technology on East sea Bridge is presented in detail.
出处
《铁道建筑技术》
2006年第2期47-50,共4页
Railway Construction Technology
关键词
公路大桥
预应力混凝土箱梁
真空辅助压浆
highway major bridge
prestressed concrete box girder
vacuum aid grouting
