In the decoration project, we can often see them, they are one of the main building structure types.It is generally used in large factories, stadiums, super high-rise and other fields.Of course, because of its own advantages, it can be widely used. Its material strength is high, and its weight is light. Compared with concrete and wood, its density and yield strength ratio is relatively low. Then we will learn about the installation technology points of steel structure?

steel structure

1.Positioning survey

According to the design data, the horizontal elevation, axis and column spacing of the foundation are retested.Mark the cross line of the vertical and horizontal axes on the top surface of the foundation as the positioning reference for the installation of columns.

2.Column installation

In order to eliminate the influence of error in column length manufacturing on column elevation, before hoisting, 1m downward from the upper plane of bracket is taken as the section of theoretical elevation, and obvious marks are marked to be used as the benchmark for adjusting column elevation.

3.Crane beam installation

Before installation, the crane beam shall be inspected and installed only when the deformation does not exceed the limit.After the single piece of crane beam is hoisted in place, it shall be connected with bracket by bolts in time, and the connection plate between the upper edge of the beam and the column shall be connected, and the leveling instrument and theodolite shall be used for adjustment. After meeting the requirements, the bolts shall be tightened.

4.Roof beam installation

Before the roof beam is assembled on the ground, the components should be inspected. When the deformation of the components does not exceed the limit, the friction surface of the high-strength bolt connection is free of sediment and other debris, and the friction surface is confirmed to be flat and dry, then the assembly can be carried out on the ground.During assembly, the components are padded up with oil-free sleepers, and both sides of the components are supported with wooden bars to enhance the stability.The assembly of roof beam takes two columns as a unit, which should be inspected after splicing

5.Installation of accessories

Roof purlin and wall purlin shall be installed at the same time.Before the installation of purlin, the deformation of the components shall be inspected. If there is any overrun, the oil stain and sediment on the surface of the member shall be removed.

6.Re inspection and adjustment, welding and paint repair

After hoisting, all components shall be rechecked and adjusted. After meeting the design requirements, field welding shall be carried out, and the damaged parts of component paint shall be repaired. 

   The above points are the key points of steel structure installation technology. Here we should remind you that these points are important in installation, but their own safety is also very important.