系杆拱拱肋混凝土泵送顶升施工技术

Construction Technology of Concrete Pumping up for Arch Rib of Tied Arch Bridge

结合广珠铁路货线白坭河特大桥系杆拱桥施工的经验,重点介绍了拱肋混凝土泵送顶升施工的机械设备选型配置、泵送混凝土性能要求和配合比的选择,详细阐述了混凝土泵送顶升施工的技术控制要点和质量保证措施,为类似工程施工提供参考。

Combined with the construction experience of Baini river tied arch bridge on Guangzhou-Zhuhai railway freight line, this paper especially introduces the selection and layout of mechanical equipment for arch rib concrete pumping-up construction, the selection of pumping concrete＇ s performance requirements and mixture proportion ; and describes the technical control points and quality assurance measures for concrete pumping-up technology in detail, which provides reference for similar projects.