摘要
广州地铁盾构下穿环市西路高架,需将WD71a桥墩桩基托换,介绍桩基托换施工的施工技术,并在施工工艺、张拉顺序、质量控制等几个方面作了介绍。
Guangzhou metro shield Huanshi road viaduct under wear,WD71a pier foundation underpinning,pile underpinning construction are introduced,and the construction technology in construction process,tension sequence,quality control and so on several aspects are introduced.
关键词
桥梁桩基
托换技术
托换桩预应力施加
预应力张拉顺序
bridge pile
underpinning technology
underpinning pile prestressed
concrete prestress sequence
