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唐山地震后,在砖混结构住宅施工中,为了加强建筑物的整体性和抗震性,并使结构和联结部分具有足够的强度和较好的延性,普遍采用了预制空心楼板端头伸出预留钢筋,下面支承的圈梁预埋锚筋,待空心楼板安装后用现浇混凝土将其连成整体。其具体作法是:制作空心板时,将全部主筋伸出板端150毫米长,板端圆孔用预制混凝土块堵住,
After the Tangshan earthquake, in the construction of brick-concrete structures, in order to strengthen the integrity and seismic resistance of the building and make the structure and the joint part have sufficient strength and good ductility, prefabricated hollow floor slabs are commonly used to protrude Retaining steel bars, anchored ribs were embedded in the ring beam underneath, and they were connected together with cast-in-place concrete after the hollow floor slab was installed. The concrete method is: When making the hollow plate, all the main tendons protrude 150 mm long from the end of the plate, and the plate-end circular holes are plugged with precast concrete blocks.