For the construction of steel structure buildings, if the fabrication of steel structure components is the foundation, then the installation of steel structure is the key to ensure its normal operation. In a sense, the quality of steel structure installation is directly related to the quality and appearance of the whole construction project. So what problems will occur during the installation of steel structure?

1.在进行钢结构安装之前，没有仔细地审查图纸设计内容，导致实际安装过程中出现了质量问题。

1. Before the installation of steel structure, the design contents of drawings were not carefully reviewed, resulting in quality problems in the actual installation process.

2.钢结构工程中的钢柱安装过程中，存在着一些违反施工操作规程的行为，比如只是将钢柱单根地插起来，却没有采取一些措施使其形成一个相对比较稳固的框架体系，因此很不牢固，容易出现倒塌现象。同时，施工过程中还经常存在着类似于锚固螺栓的标高不一致，螺栓的定位尺寸在放预埋时出现偏差，进而出现钢柱安装时的偏位等问题。

2. During the installation of steel columns in steel structure engineering, there are some behaviors in violation of construction operation regulations. For example, the steel columns are only inserted individually, but some measures are not taken to form a relatively stable frame system. Therefore, it is very unstable and prone to collapse. At the same time, there are often some problems in the construction process, such as the inconsistency of the elevation similar to the anchor bolt, the deviation of the positioning size of the bolt when placing and embedding, and then the deviation during the installation of the steel column.

3.钢结构安装过程中使用多是高强度螺栓，实践中经常会出现如下问题：螺栓露牙不足或者比螺母还低一些；螺栓没有拧紧，且扭剪过程中将梅花头拧断了，大六角形状没有设置初拧和终拧标记；在实际安装过程中，摩擦面上原有的一层防护纸没有完全撕掉；将高强度的螺栓用作临时固定之用，待其安装之后两天两夜内没有进行漆封操作；没有对扭矩和轴力进行复试，而且也没有对紧固力矩严格按照相关规定进行计算；钢结构的摩擦系数没有进行严格的试验和测算；安装过程中所用到的拉杆螺栓没有拧紧，或者拉杆本身就不直，导致螺母和母材之间的接触面太小，因此难以实施穿孔作业。

3. High strength bolts are mostly used in the installation of steel structures, and the following problems often occur in practice: the exposed teeth of bolts are insufficient or lower than nuts; The bolt is not tightened, and the plum blossom head is broken during torsion and shearing, and the large hexagon shape is not marked with initial tightening and final tightening; In the actual installation process, the original layer of protective paper on the friction surface is not completely torn off; High strength bolts are used for temporary fixing, and no paint sealing operation is carried out within two days and two nights after installation; The torque and axial force were not retested, and the tightening torque was not calculated in strict accordance with relevant regulations; The friction coefficient of steel structure has not been strictly tested and calculated; The tension rod bolts used in the installation process are not tightened, or the tension rod itself is not straight, resulting in too small contact surface between the nut and the base metal, so it is difficult to carry out perforation operation.

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