一、概述采用长线台座法生产水泥桁条有很多优点,并且简单可行,但也有不足之处,突出地表现为生产周期长、产量低、质量不稳定、劳动条件差等。为了克服生产场地不足的困难,达到均衡生产和提高产量的目的,国内已有许多单位开始采用短线法模外张拉工艺来生产水泥桁条了,并且得到了很快的发展,许多地方相继建起了墙体混凝土板材、楼板、屋面板等专业生产线,钢模的应用随之日益普遍。钢模的加工制作和其结构受力性能很大程度上直接影响到产品的质量,因此钢模结构设计和其受力性能的研究有着重要的实际意义。 I. Overview The production of cement purlins using the long-line pedestal method has many advantages, and it is simple and feasible, but there are also deficiencies, which are highlighted by long production cycle, low yield, unstable quality, and poor working conditions. In order to overcome the insufficiency of production sites and achieve balanced production and increase production, many domestic companies have begun to use short-duration molding methods to produce cement purlins, and they have been rapidly developed. Many places have been built one after another. Since the professional production lines such as wall concrete slabs, floor slabs, and roof slabs, the application of steel molds has become increasingly common. The manufacture of steel molds and the mechanical properties of their structures directly affect the quality of the products to a great extent. Therefore, the design of steel mold structures and the study of their mechanical properties have important practical significance.