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钢结构制作安装常见问题之安装质量问题

发布时间:2015-11-16 9:51:14 浏览次数:518
一、高强度螺栓安装,出现以下一些问题:糖浆不足,甚至以下螺母螺栓未拧紧,扭剪型;可是没有梅花头大六角头拧终拧标记;安装时,摩擦面保护纸揭未;高强螺栓对临时固定用的安装后48小时内未油漆桶;还有的扭矩和轴力试验,紧固力矩未按规定计算;摩擦系数试验没什么不做,有的只有一组。拉杆螺栓不填,负荷不直腰园孔用大螺母和垫圈母亲关于界面太小,很容易穿孔。
二、钢柱安装时违反操作规程像蜡烛一样一根根单插起来当天又形成稳定的框架单元,由于大风就垮了。这种安全事故出现,绝对避免的。
三、彩色钢板围护拼缝不密,收尾的“不良”鼻孔还封锁了影响的防雨渗漏和美丽。
四、单位没有安装工艺,安装构件无顺序。如果一展厅建筑面积6000平方米,共四层。安装构件都已恢复正常,但仍与主钢柱进行固定。但边缘辅助小钢柱已经都焊接。钢柱安装完毕后再一起,必须尽快的钢柱底部的平整焊牢,还有的抛弃。但有些现场彩色板已经开始安装柱脚不是封闭了。
五、图纸会审详细内安装质量不良。如果设计图纸未注明在吊车梁翼板上钻孔,施工单位也未提交最终安装轨道时使用的焊接,吊车梁下屈服违反强制性条文中有关吊车梁不许下屈服了规定。
六、固定螺栓高度不同柱脚平面预先推测,预埋时移位,形成桩偏位,必须先测量后问。

七、现场焊接线普遍。如果刚性连接打底焊间距太小,无法焊接结果,判手溜就扔掉;衬垫板规格不符合要求,甚至用钢筋代替;용접선的成型不好,凹凸不平宽度不一,开始,焊瘤尚未清除,咬肉、气孔多;狐狐尾头引灯号板出现凹陷等等。



One, high strength bolt installation, there are some problems: lack of syrup, and even the following nut bolts did not tighten, torsional shear type; but no club head big six angle head screw final twist mark; installation, friction surface protection paper, high strength bolts for temporary fixed with 48 hours after the installation is not paint bucket; also the torque and axial force test, fastening torque is not calculated; friction coefficient test have nothing to do, some only one group. Tie rod bolt is not filled, the load is not straight waist hole with big nut and washer mother on the interface is too small, it is easy to punch.
Second, steel column installation in violation of operation rules, like a candle as the root of a single in the day and the formation of stable framework unit. Due to high winds would collapse. This kind of safety accident, absolutely avoid.
Three, color plate retaining the seam is not dense, ending the "bad" nose also blocked the leakage effect and beautiful rain.
Four, the unit does not have the installation process, the installation of components without sequence. If an exhibition hall construction area of 6000 square meters, a total of four layers. The installation member has been restored to normal, but still with the main steel column for fixed. But the edge of the auxiliary small steel column has been welded. After the installation of steel columns with welded steel columns must be smooth, as soon as possible at the bottom, and the abandoned. But some live color board has begun installing column is not closed.
Five, detailed drawings in the installation quality. If the design drawings are not indicated on the crane beam flange, the construction unit is not submitted to the final installation of the welding, the crane beam under the mandatory provisions of the relevant crane beams are not allowed to yield.
Six, fixed bolts with different height of column plane prediction, embedded displacement, pile deflection measurement, must first ask.
Seven, the welding line is common. If the rigid connection backing weld spacing is too small to welding results, determine hand slipped away; liner board specifications do not meet the requirements, even with a bar to replace; 'forming, uneven width, began, the overlap is not yet clear, bite of meat, the stomata; fox fox brush head lead plate lights, depression and so on.


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