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现浇钢筋混凝土框架、剪力墙、框架-剪力墙、框支剪力墙结构和钢筋混凝土排架结构竖向构件与后砌砌体之间的拉结钢筋,早在20世纪50年代,就是用手持式电钻在模板上钻眼,将钢筋事先预埋在混凝土竖向构件
Cast-in-situ reinforced concrete frames, shear walls, frame-shear walls, frame-supported shear wall structures, and pull-reinforcement bars between vertical members of reinforced concrete fender structures and post masonry, as early as the 1950s, It is to use a hand-held electric drill to drill holes on the stencil and pre-embed the steel in the concrete vertical members.