大型非预应力薄腹混凝土构件，如薄腹梁、屋架工字柱、吊车梁等，由于其长度、高度较大，给工业化生产、运输、维护带来诸多不便，因此，广泛采用现场制作方式。传统的生产工艺是采用土模、砖胎模或混凝土胎模进行卧式浇筑。由于薄腹构件均在立式状态下工作，如末进行准确的计 Large-scale non-prestressed thin-wall concrete members, such as thin-web girders, trussed I-pillars, crane beams, etc., have a lot of inconvenience for industrial production, transportation, and maintenance because of their large length and height. Therefore, the on-site production methods are widely used. . The traditional production process is the horizontal pouring using a soil mold, a brick tire mold or a concrete tire mold. Since the thin-wall components are all working in the vertical state, accurate measurement is performed at the end.