给水管线拉管穿越首都机场第二高速施工要点及桥梁保护措施

Key Construction Points and Bridge Protection Measures for Water Supply Pipelines Crossing the Second Expressway of the Capital Airport by Pipe Drawing

文章以给水管线拉管穿越首都机场第二高速工程为例,基于工程概况,从准备工作、钻机就位、钻导向孔、扩孔施工、管线回拖、管外注浆方面对施工流程展开探讨,并阐述了施工检测相关内容,以此明确拉管穿越高速公路的施工要点,最后着重探讨了桥梁保护措施,可供参考。

Taking the water supply pipelines crossing the second expressway of the Capital Airport project by pipe drawing as an example, based on the project overview, this paper discusses the construction process from the aspects of preparation, drilling rig location, drilling pilot holes, hole expansion construction, pipeline pulling back and external grouting, and expounds the relevant contents of construction inspection, so as to clarify the key construction points of drawing pipelines to cross the expressway. Finally, it focuses on the bridge protection measures for reference.