The connection method of the steel structure grid mainly includes welding connection, rivet link, bolt connection and the like. Each method has its own advantages and disadvantages. Let's talk about the advantages and disadvantages of soldering connections:

advantage:

1. There is no need to drill holes in the steel, saving labor and time, and not reducing the cross-sectional area of the material, so that the material can be fully utilized.

2, any shape of the components can be directly connected, generally do not need auxiliary parts. The connection structure is simple, the transmission path is short, and the application is wide.

3. The airtightness and watertightness of the welded joint are good, the structural rigidity is also large, and the structural integrity is good.

The main disadvantages of weld joints are:

4. Due to the high temperature effect, a heat affected zone is formed near the weld seam, and the metallographic structure and mechanical properties of the steel material change, and the material becomes brittle.

5. The residual stress of the welding increases the possibility of brittle failure of the structure and reduces the stable bearing capacity of the pressing bar. At the same time, the residual deformation also changes the size and shape of the component, and the labor is corrected.

6. The welded structure has continuity, and the local crack can easily spread to the whole as soon as it is produced.

In the steel structure grid project, if the welding link method is adopted, the above characteristics of the welded joint should be considered, and the strength and avoidance should be avoided. In the face of important welding structures, the structural design and welding process should be closely coordinated to achieve a complete design and construction plan.