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国标图G410(一)中,1.5×6.0米预应力钢筋混凝土屋面板是工业厂房通用构件之一。其生产方法一般采用正浇法。按屋面板底部形状,沿台座生产线做成砖或混凝土的胎模。构件浇筑成型与其使用时的方向一致。正浇法的优点是吊钩能按图摆放,底面形状准确美观,外模支拆、固定都比较容易。其缺点是胎模形状复杂,费工费料;胎模生产线不能生产他种构件,影响台座的综合利用;尤其是预应力筋放张后,屋面板被压缩反拱,造成脱模起吊困难,有
In the national standard map G410 (I), 1.5 × 6.0 meters of prestressed reinforced concrete roof panels is one of the common components of industrial plants. The production method generally uses positive pouring. According to the shape of the bottom of the roof panel, a brick or concrete tire mold is made along the pedestal production line. The component is cast in the same direction as it was used. The advantage of the pouring method is that the hook can be placed according to the figure, the shape of the bottom surface is accurate and beautiful, and the outer mold is easily disassembled and fixed. The disadvantage is that the shape of the tire mold is complex and it takes labor and materials; the tire mold production line cannot produce other kinds of components, which affects the comprehensive utilization of the pedestal; in particular, after the prestressed tendons are laid, the roof panels are compressed and reversed arches, causing difficulties in demoulding and lifting. Have