为了节省模板,简化生产工艺,提高振捣质量,近十年来,不少地区在楼板施工中采用预应力薄板作为现浇楼板的永久性模板。这种薄板表面留有7～8cm长的抗剪结合筋,其缺点是,板的混凝土较难捣实,尤其是结合筋下面更难以捣实,操作费工又不方便,对混凝土板的质量造成不利影响,并且 In order to save the template, simplify the production process and improve the quality of vibrators, in the past ten years, prefabricated sheets have been used as permanent templates for cast-in-situ slabs in floor construction. This kind of thin plate surface has 7-8cm long shear-resistance ribs. The disadvantage is that the concrete of the plate is difficult to compact, especially the ribs are more difficult to tamper, the operation is laborious and inconvenient, and the quality of the concrete plate Cause adverse effects and