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止水钢板搭接长度规范是多少

《建筑给排水主体结构工程施工及施工验收规范》GB50141-2008第6.1.10条要求,建筑物伸缩缝处金属材料钢板止水带搭接长度不能少于20mm,需要运两面焊接。而如今大多数止水钢板的搭接长度通常是在50mm-100mm。

止水钢板搭接方式:

1、止水钢板面维持平整度、干燥,安裝前清理介面浮渣灰尘及拉圾,用焊接方法将止水钢板安裝到已明确的安裝位置。

2、止水钢板带相连接时运用平行面搭接方式,其中间不能留断点,相接处止水钢板增强固定。

3、安裝角度问題,不论是水平面止水钢板还是纵向止水钢板,必须使得两翘曲面安裝大方向朝迎水面

止水钢板搭接焊接时须要留意的几点:

1、钢板电焊焊接应分两遍成活,接口处需留2mm对接焊缝,第一遍对接焊缝时,先要在中间、两头点焊固定不动,随后从中间往上施焊直至上方,之后再从下方向中间施焊,第一遍成功后马上将药皮是焊锤砸掉,检査有没有沙眼、漏焊处,如有应做好焊补。第二遍需从底端开始施焊。剪力墙拐角处采取丁字形焊接或是7字形焊接。两面帮焊。

2、止水钢板精准定位筋设置沿止水钢板方向,在其两边使用Φ10钢筋焊接;一边焊接在止水钢板上,另端焊接在剪力墙的水平、竖向主筋上对其做好定位;定位建筑钢筋的距离为1000mm,两边对称设定。

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