The main structural forms of steel structures include the following

Portal steel frame system: The portal steel frame structure is mainly composed of transverse rigid frames composed of columns and beams as the main load-bearing structure, and the steel frame is a planar load-bearing system. To ensure longitudinal stability, column supports and roof supports are installed. The steel frame columns and beams in the rigid frame are made of H-section steel, and various loads are transmitted to the foundation through the columns and beams.

 

 

 

Multi layer frame system: The multi layer frame system consists of frame beams and frame columns, and is used for high-rise and high-rise civil and public buildings. The multi-layer frame system includes mechanical models such as pure rigid frame, rigid support frame, and supported frame. The frame columns can adopt H-shaped sections, box shaped sections, cross shaped sections, circular tube shaped sections, etc.

 

 

 

Truss: The truss is composed of metal rods and has a triangular unit plan view or indoor spatial structure. The members mainly bear tensile or compressive strength, which can fully utilize the material strength. It is suitable for structures with large spans, saving materials and reducing weight.

 

 

 

Spherical grid structure: The spherical grid structure is composed of multiple members connected in a certain grid pattern, and has the characteristics of spatial stress, light weight, high stiffness, and good seismic resistance. It is suitable for buildings such as sports venues, cinemas, and exhibition halls.

 

 

 

Cable membrane structure: Cable membrane structure originated from tent structure, and modern cable membrane structure uses high-strength, moisture-proof, and transparent membrane materials, which are widely used in commercial buildings such as seaside tourism and exhibitions.

 

 

 

Light steel structure: Light steel structures are usually welded from round steel, small angle steel, thin-walled steel or thin steel plates, and have the advantages of light weight, low cost, high degree of manufacturing industrialization, and fast construction speed. They are suitable for industrial plants, small and medium-sized buildings, etc.

 

 

 

Tower and mast structure: Tower and mast structures are used for high-rise buildings, such as television towers, microwave towers, communication towers, etc., with high stability and load-bearing capacity.

 

 

 

High rise steel structures: High rise steel structures include television towers, microwave towers, communication towers, etc., which are usually used in buildings that require height and stability.

 

 

 

Plate shell steel structure: Plate shell steel structure is used for containers that require sealing, such as large oil storage tanks, gas storage tanks, etc., and buildings that need to withstand large internal forces and temperature changes.