本文简要介绍内径2.2米、壁厚0.26米、长16米钢筋混凝土圆管的预制工艺。采用卧式预制和滚运存放此种大直径长圆管在国内还是第一次。该工艺的最大特点是操作简便,全部作业实现了标准化,故经济效益较为显著。采用全封闭开窗工具式模板,成型后管壁平滑美观;支拆模板除少量端模外,只需5吨卷扬机牵引即可完成;钢筋加工绑扎实现了模具化,成型尺寸准确:自重80吨圆管的倒运存放利用滚动摩擦只需2台3吨卷扬机即可完成。而根据气温控制好芯模除拆时间,则是本工艺的一个重要环节,否则会造成拆除困难。 This article briefly introduces the prefabrication process of 2.2m diameter inner diameter, 0.26m wall thickness and 16m long reinforced concrete pipe. The use of horizontal prefabricated and roll storage of such large diameter tube in the country for the first time. The most prominent feature of this process is that it is easy to operate and all operations are standardized, so the economic benefits are significant. The use of fully enclosed window-opening tool template, the wall after molding smooth and beautiful; except for a small amount of support mold template, only 5 tons of hoist traction can be completed; steel processing lashing to achieve the mold, forming accurate size: weighing 80 tons The round tube of the reverse storage using rolling friction only two 3 ton hoist can be completed. According to the temperature control core removal demolition time, it is an important part of the process, otherwise it will cause demolition difficulties.