长期以来,北京市居住建筑和公共建筑普遍采用各种预制钢筋混凝土楼板。近年来,高层建筑大量增加,一些建筑要求有较大的跨度并需满足一定的抗震要求。为了改善楼板的结构性能,在结构设计中有必要将传统的预制楼板改为现浇楼板。采用现浇钢筋混凝土楼板会增加大量的模板作业。若使用木模,需要大量木材;若使用组合式定型钢模板或大型飞模, For a long time, various prefabricated reinforced concrete floors have been widely used in residential buildings and public buildings in Beijing. In recent years, high-rise buildings have increased significantly. Some buildings require a large span and must meet certain seismic requirements. In order to improve the structural performance of the floor slab, it is necessary to change the traditional prefabricated floor slab into a cast-in-place floor slab in the structural design. The use of cast-in-place reinforced concrete slabs will increase the number of formwork operations. If wood molds are used, a large amount of wood is needed; if a modular steel template or large-scale flying mold is used,