Steel truss girders are a kind of steel structure, mainly composed of upper chords, lower chords, vertical rods and diagonal rods. The upper and lower chords are connected by vertical rods and diagonal rods to form a spatial grid structure. This structure has the advantages of high rigidity, high strength, light self-weight and so on.

Steel truss girders are widely used in steel structure engineering buildings, mainly as lateral support systems. They are often used as transverse support structures for large-span spaces such as factories, warehouses, stadiums, airports and station halls. In these structures, steel truss girders play a very important role in supporting the upper structure and maintaining the overall stability of the structure.

The components of steel truss girders include main beams, vertical rods, diagonal rods and nodes. The main beams are usually installed on both sides of the structure and play a main role in lateral support. Vertical rods and diagonal rods are installed between the main beams to transfer loads. Nodes are used to connect the main beams, vertical rods and diagonal rods to ensure the continuity and rigidity of the overall structure. Common cross-sectional shapes of steel truss girders include I-beams, box steel tubes and round steel tubes.

Due to the light self-weight, high strength and high rigidity of steel truss girders, large spans can be achieved and field installation and disassembly are also convenient. It is widely used in large-span industrial buildings such as factories, warehouses and stadiums. Steel truss girders play an extremely important role in these buildings and can effectively support the upper structure and maintain the overall stability of the building. At the same time, the steel truss girder structure itself is simple, easy to manufacture and install, so the cost is lower and more economical and practical. In summary, steel truss girders have the advantages of light self-weight, high strength, high rigidity, economy and practicality, and have a wide application prospect in large-span industrial buildings.