工业建筑中,双肢柱和屋架等大型预制钢筋混凝土构件,一般采取在现场就地重叠预制的方法。这种方法虽然可行,但也存在着腹杆多、支模复杂、需用大量模板、施工难度大和费工费时等缺点,特别是节点处容易出现偏差,难以保证构 In industrial buildings, large-scale prefabricated reinforced concrete members such as double-limb columns and roof trusses are generally prepared by on-site overlapping prefabrication. Although this method is feasible, it also has the disadvantages of many webbings, complicated formwork, the need for a large number of formworks, difficulty in construction, and time-consuming work. In particular, it is prone to deviations at the nodes, making it difficult to guarantee