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钢窗框和砖墙洞之间多用洞壁留孔预埋铁脚连接,钢窗框和钢筋混凝土墙洞也可采用像砖墙那样连接(图1)。但在钢筋混凝土墙上预留孔是件很困难的事。于是一些工地采用凿洞壁焊接钢筋的方法,即先剔凿洞壁找出钢筋,再用1φ6短钢筋一端焊在钢窗框上,另一端焊在钢筋上(图2)。这样做不仅剔凿混凝土费力,而且产生以下危害:一是破坏了钢筋保护层,再补上去的砂浆或豆石混凝
Between the steel window frame and the brick wall hole, the holes are used to connect the holes to the embedded iron feet. The steel window frames and the reinforced concrete wall holes can also be connected like a brick wall (Figure 1). However, it is difficult to reserve holes in reinforced concrete walls. Therefore, some construction sites adopted the method of digging holes in the welded steel wall, that is, removing the wall of the hole to find the steel bar, and then welding one end of the 1φ6 short steel bar to the steel window frame and welding the other end to the steel bar (Figure 2). This will not only decipher the hard concrete, but also cause the following hazards: First, damage the protective layer of the steel, and then make up the mortar or coagulation