预制混凝土空心板顶板厚度的质量控制

Insurance of the Thickness of Precast Concrete Core Slab at the Top

橡胶胶囊作为一种制孔工具,在混凝土构件预制中应用越来越广泛,尤其是在桥梁梁板预制生产中,它作为芯模板大有取代钢(木)制内模板的趋势。但橡胶气囊因刚度不足,施工中容易变形,易造成空心板的厚度不均、板厚过薄等缺陷。但是,只要施工时控制得当,这种俗称"跑模"的问题是可以解决的。

As a kind of core maker,the rubber mold has found a wide application in the prefabrication of concrete structural elements and it tends to replace the steel mold as the inner mold especially in that of bridge beam. But the lack of rigidity and inconstant shape of the rubber mold often result in an uneven or incomplete thickness of the core slab. But the construction measures proposed in the article may solve the problems mentioned.