摘要
桥梁工程施工过程中后张法预应力技术运用的好坏直接关系到桥梁施工质量和使用寿命。以城赵枢纽A匝道跨线桥工程为例,对后张法预应力施工技术要点进行探讨,具体包括基础处理和施工准备,支架的搭设、预压,张拉程序、张拉伸长量计算等方面,以期对相关工程后张法预应力施工提供参考借鉴。
The quality of post-tensioning prestressing technology used in bridge construction is directly related to bridge construction quality and service life. Taking the Taigu interchange A ramp overpass bridge project of the Chengzhao junction in the fifth contract section of the Longcheng expressway as an example,the main points of the post-tensioned prestressed construction technology are discussed,including foundation treatment and construction preparation,support erection and preloading,tensioning procedures,calculation of tensioning length,etc.,in order to provide guidance and reference for related projects post-tensioning prestressed construction.
作者
任立奇
Ren Liqi(Shanxi Xieli Highway Engineering Supervision Co.,Ltd.,Jinzhong 030600,China)
出处
《山西建筑》
2020年第5期148-149,共2页
Shanxi Architecture
关键词
A匝道跨线桥工程
后张法预应力
施工技术
A ramp overpass bridge project
post-tensioning prestressing
construction technology
