What are the main structural forms of steel supports?

What are the main structural forms of steel supports? 

Steel support structures are one of the main structural forms in civil engineering. It is widely used in the construction of houses, bridges, ports, mines, etc., especially in high-rise construction, towering structures, long-span and sealed structures. Steel structure is a geometric system that can accept various functions made of beams, columns, supports and other fundamental components made of steel or steel plates, and is connected by welding or high-strength bolts.

Steel structures and masonry structures, steel supports, reinforced concrete structures, etc. are all engineering structures. They are similar in structural system, internal force analysis, etc., but because of different raw materials, they are obviously different in component design, structural treatment, etc. Compared with other structures, steel structure has the following characteristics: high material strength, light structural weight, steel and concrete and wood, although the density is large, but the density-to-strength ratio is relatively low, so under the same stress conditions, the steel structure is smaller than the concrete structure and wooden structure, and the structure weight is lighter.

Steel supports are suitable for high-rise and long-span structures. The steel raw materials are uniform, have good plasticity and resistance, and have high structural reliability The internal crystal arrangement of steel is fine and uniform, which is an elastoplastic material with approximate isotropy, and has good plasticity and resistance. The practical working conditions of steel structures are more in line with the current calculation theory, so the steel structure is highly reliable.