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吊顶

精装吊顶拉力实验

精装吊顶拉力实验

浏览：46次 | 提问时间： 08-04 10:51

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5个答案

疼 08-04 11:00

你说的那个螺丝用于吊顶用的，一般都用的上，一个可以承受60公斤

戏子半扇妆 08-04 11:09

膨胀螺丝一般说的是金属膨胀螺丝，膨胀螺丝之固定乃是利用楔形斜度来促使膨胀产生摩擦握裹力，达到固定效果。螺钉一头是螺纹，一头有锥度。外面包一铁皮(有的是钢管)，铁皮圆筒(钢管)一半有若干切口，把它们一起塞进墙上打好的洞里，然后锁螺母，螺母把螺钉往外拉，将锥度拉入铁皮圆筒，铁皮圆筒被涨开，于是紧紧固定在墙上，一般用于防护栏、雨篷、空调等在水泥、砖等材料上的紧固。但它的固定并不十分可靠，如果载荷有较大震动，可能发生松脱，因此不推荐用于安装吊扇等。一般膨胀螺丝之埋入深度以其固定用螺栓径之4倍为计算基准，当然埋入越深其所能承受之拉力、剪力也越大，用强度M10-M12膨胀螺丝足够，还需要考虑的是天花顶的牢度，尽量打细一些的孔牢度比较大，可以承受200-500公斤的极限垂直拉力，如加强安全性，需要两颗膨胀螺丝。

神经小妞 08-04 11:17

1：一般不上人吊顶天花螺栓需要做拉拔试验，下用槽钢或支架架空。二。为减少千斤顶对锚筋附近混凝土的约束，可采用拉力计（千斤顶）对所植钢筋进行拉拔试验加载方式见右图：实验步骤、一般植筋72小时后一，支点距离≥max（3d，60mm）

你眼澄澈让我习惯 08-04 11:25

膨胀螺丝可以承受一吨，上面的要看你的施工质量和材料了。只有技术规格的，没有什么标准公式

薄荷少女﹃﹃ 08-04 11:33

用一个膨胀螺栓如果失效，用钢板钻眼螺丝固定连接，以免影响灯具安装膨胀螺栓的间距最好60MM以上，那膨胀螺栓的间距就要稍大些，而且灯盘需要按照螺丝的间距钻孔，这样安全系数更高一些。如果灯盘直径比较大，会有危险的。然后用螺丝与灯盘固定，藏在棚平面以下。理论上这两个膨胀螺栓的抗拉力是150斤。钢板需要打4个孔洞，连个连接膨胀螺丝，两个固定灯具用最好用两个膨胀螺栓120*8的，无法牢固。至于螺丝的长短根据棚面下反来确定。最好是一个U型螺丝，以免转轴

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